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* [patch 1/2] proc_fops: convert drivers/isdn/ to seq_file
@ 2009-12-22  0:25 akpm
  2009-12-23 12:30 ` Tilman Schmidt
  2010-01-04  5:26 ` [patch 1/2] " David Miller
  0 siblings, 2 replies; 13+ messages in thread
From: akpm @ 2009-12-22  0:25 UTC (permalink / raw)
  To: isdn; +Cc: netdev, akpm, adobriyan, tilman

From: Alexey Dobriyan <adobriyan@gmail.com>

Convert code away from ->read_proc/->write_proc interfaces.  Switch to
proc_create()/proc_create_data() which make addition of proc entries
reliable wrt NULL ->proc_fops, NULL ->data and so on.

Problem with ->read_proc et al is described here commit
786d7e1612f0b0adb6046f19b906609e4fe8b1ba "Fix rmmod/read/write races in
/proc entries"

[akpm@linux-foundation.org: CONFIG_PROC_FS=n build fix]
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 Documentation/isdn/INTERFACE.CAPI       |    4 
 drivers/isdn/capi/capi.c                |  103 ++++-------
 drivers/isdn/capi/capidrv.c             |   58 ++----
 drivers/isdn/capi/kcapi.c               |    8 
 drivers/isdn/gigaset/capi.c             |   71 ++++---
 drivers/isdn/hardware/avm/avmcard.h     |    6 
 drivers/isdn/hardware/avm/b1.c          |   52 +++--
 drivers/isdn/hardware/avm/b1dma.c       |   71 ++++---
 drivers/isdn/hardware/avm/b1isa.c       |    2 
 drivers/isdn/hardware/avm/b1pci.c       |    4 
 drivers/isdn/hardware/avm/b1pcmcia.c    |    2 
 drivers/isdn/hardware/avm/c4.c          |   51 +++--
 drivers/isdn/hardware/avm/t1isa.c       |    2 
 drivers/isdn/hardware/avm/t1pci.c       |    2 
 drivers/isdn/hardware/eicon/capimain.c  |   38 ++--
 drivers/isdn/hardware/eicon/diva_didd.c |   42 ++--
 drivers/isdn/hardware/eicon/divasi.c    |   48 ++---
 drivers/isdn/hardware/eicon/divasproc.c |  198 +++++++++-------------
 drivers/isdn/hysdn/hycapi.c             |   55 +++---
 include/linux/isdn/capilli.h            |    3 
 net/bluetooth/cmtp/capi.c               |   37 ++--
 21 files changed, 405 insertions(+), 452 deletions(-)

diff -puN Documentation/isdn/INTERFACE.CAPI~proc_fops-convert-drivers-isdn-to-seq_file Documentation/isdn/INTERFACE.CAPI
--- a/Documentation/isdn/INTERFACE.CAPI~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/Documentation/isdn/INTERFACE.CAPI
@@ -149,8 +149,8 @@ char *(*procinfo)(struct capi_ctr *ctrlr
 	pointer to a callback function returning the entry for the device in
 	the CAPI controller info table, /proc/capi/controller
 
-read_proc_t *ctr_read_proc
-	pointer to the read_proc callback function for the device's proc file
+const struct file_operations *proc_fops
+	pointers to callback functions for the device's proc file
 	system entry, /proc/capi/controllers/<n>; will be called with a
 	pointer to the device's capi_ctr structure as the last (data) argument
 
diff -puN drivers/isdn/capi/capi.c~proc_fops-convert-drivers-isdn-to-seq_file drivers/isdn/capi/capi.c
--- a/drivers/isdn/capi/capi.c~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/drivers/isdn/capi/capi.c
@@ -33,6 +33,7 @@
 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
 #include <linux/skbuff.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/poll.h>
 #include <linux/capi.h>
 #include <linux/kernelcapi.h>
@@ -1407,114 +1408,84 @@ static void capinc_tty_exit(void)
  * /proc/capi/capi20:
  *  minor applid nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt
  */
-static int proc_capidev_read_proc(char *page, char **start, off_t off,
-                                       int count, int *eof, void *data)
+static int capi20_proc_show(struct seq_file *m, void *v)
 {
         struct capidev *cdev;
 	struct list_head *l;
-	int len = 0;
 
 	read_lock(&capidev_list_lock);
 	list_for_each(l, &capidev_list) {
 		cdev = list_entry(l, struct capidev, list);
-		len += sprintf(page+len, "0 %d %lu %lu %lu %lu\n",
+		seq_printf(m, "0 %d %lu %lu %lu %lu\n",
 			cdev->ap.applid,
 			cdev->ap.nrecvctlpkt,
 			cdev->ap.nrecvdatapkt,
 			cdev->ap.nsentctlpkt,
 			cdev->ap.nsentdatapkt);
-		if (len <= off) {
-			off -= len;
-			len = 0;
-		} else {
-			if (len-off > count)
-				goto endloop;
-		}
 	}
-
-endloop:
 	read_unlock(&capidev_list_lock);
-	if (len < count)
-		*eof = 1;
-	if (len > count) len = count;
-	if (len < 0) len = 0;
-	return len;
+	return 0;
 }
 
+static int capi20_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, capi20_proc_show, NULL);
+}
+
+static const struct file_operations capi20_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= capi20_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 /*
  * /proc/capi/capi20ncci:
  *  applid ncci
  */
-static int proc_capincci_read_proc(char *page, char **start, off_t off,
-                                       int count, int *eof, void *data)
+static int capi20ncci_proc_show(struct seq_file *m, void *v)
 {
         struct capidev *cdev;
         struct capincci *np;
 	struct list_head *l;
-	int len = 0;
 
 	read_lock(&capidev_list_lock);
 	list_for_each(l, &capidev_list) {
 		cdev = list_entry(l, struct capidev, list);
 		for (np=cdev->nccis; np; np = np->next) {
-			len += sprintf(page+len, "%d 0x%x\n",
+			seq_printf(m, "%d 0x%x\n",
 				       cdev->ap.applid,
 				       np->ncci);
-			if (len <= off) {
-				off -= len;
-				len = 0;
-			} else {
-				if (len-off > count)
-					goto endloop;
-			}
 		}
 	}
-endloop:
 	read_unlock(&capidev_list_lock);
-	*start = page+off;
-	if (len < count)
-		*eof = 1;
-	if (len>count) len = count;
-	if (len<0) len = 0;
-	return len;
-}
-
-static struct procfsentries {
-  char *name;
-  mode_t mode;
-  int (*read_proc)(char *page, char **start, off_t off,
-                                       int count, int *eof, void *data);
-  struct proc_dir_entry *procent;
-} procfsentries[] = {
-   /* { "capi",		  S_IFDIR, 0 }, */
-   { "capi/capi20", 	  0	 , proc_capidev_read_proc },
-   { "capi/capi20ncci",   0	 , proc_capincci_read_proc },
+	return 0;
+}
+
+static int capi20ncci_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, capi20ncci_proc_show, NULL);
+}
+
+static const struct file_operations capi20ncci_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= capi20ncci_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
 };
 
 static void __init proc_init(void)
 {
-    int nelem = ARRAY_SIZE(procfsentries);
-    int i;
-
-    for (i=0; i < nelem; i++) {
-        struct procfsentries *p = procfsentries + i;
-	p->procent = create_proc_entry(p->name, p->mode, NULL);
-	if (p->procent) p->procent->read_proc = p->read_proc;
-    }
+	proc_create("capi/capi20", 0, NULL, &capi20_proc_fops);
+	proc_create("capi/capi20ncci", 0, NULL, &capi20ncci_proc_fops);
 }
 
 static void __exit proc_exit(void)
 {
-    int nelem = ARRAY_SIZE(procfsentries);
-    int i;
-
-    for (i=nelem-1; i >= 0; i--) {
-        struct procfsentries *p = procfsentries + i;
-	if (p->procent) {
-	   remove_proc_entry(p->name, NULL);
-	   p->procent = NULL;
-	}
-    }
+	remove_proc_entry("capi/capi20", NULL);
+	remove_proc_entry("capi/capi20ncci", NULL);
 }
 
 /* -------- init function and module interface ---------------------- */
diff -puN drivers/isdn/capi/capidrv.c~proc_fops-convert-drivers-isdn-to-seq_file drivers/isdn/capi/capidrv.c
--- a/drivers/isdn/capi/capidrv.c~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/drivers/isdn/capi/capidrv.c
@@ -2229,59 +2229,37 @@ static void lower_callback(unsigned int 
  * /proc/capi/capidrv:
  * nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt
  */
-static int proc_capidrv_read_proc(char *page, char **start, off_t off,
-                                       int count, int *eof, void *data)
+static int capidrv_proc_show(struct seq_file *m, void *v)
 {
-	int len = 0;
-
-	len += sprintf(page+len, "%lu %lu %lu %lu\n",
+	seq_printf(m, "%lu %lu %lu %lu\n",
 			global.ap.nrecvctlpkt,
 			global.ap.nrecvdatapkt,
 			global.ap.nsentctlpkt,
 			global.ap.nsentdatapkt);
-	if (off+count >= len)
-	   *eof = 1;
-	if (len < off)
-           return 0;
-	*start = page + off;
-	return ((count < len-off) ? count : len-off);
-}
-
-static struct procfsentries {
-  char *name;
-  mode_t mode;
-  int (*read_proc)(char *page, char **start, off_t off,
-                                       int count, int *eof, void *data);
-  struct proc_dir_entry *procent;
-} procfsentries[] = {
-   /* { "capi",		  S_IFDIR, 0 }, */
-   { "capi/capidrv", 	  0	 , proc_capidrv_read_proc },
+	return 0;
+}
+
+static int capidrv_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, capidrv_proc_show, NULL);
+}
+
+static const struct file_operations capidrv_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= capidrv_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
 };
 
 static void __init proc_init(void)
 {
-    int nelem = ARRAY_SIZE(procfsentries);
-    int i;
-
-    for (i=0; i < nelem; i++) {
-        struct procfsentries *p = procfsentries + i;
-	p->procent = create_proc_entry(p->name, p->mode, NULL);
-	if (p->procent) p->procent->read_proc = p->read_proc;
-    }
+	proc_create("capi/capidrv", 0, NULL, &capidrv_proc_fops);
 }
 
 static void __exit proc_exit(void)
 {
-    int nelem = ARRAY_SIZE(procfsentries);
-    int i;
-
-    for (i=nelem-1; i >= 0; i--) {
-        struct procfsentries *p = procfsentries + i;
-	if (p->procent) {
-	   remove_proc_entry(p->name, NULL);
-	   p->procent = NULL;
-	}
-    }
+	remove_proc_entry("capi/capidrv", NULL);
 }
 
 static int __init capidrv_init(void)
diff -puN drivers/isdn/capi/kcapi.c~proc_fops-convert-drivers-isdn-to-seq_file drivers/isdn/capi/kcapi.c
--- a/drivers/isdn/capi/kcapi.c~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/drivers/isdn/capi/kcapi.c
@@ -490,13 +490,7 @@ attach_capi_ctr(struct capi_ctr *card)
 	card->traceflag = showcapimsgs;
 
 	sprintf(card->procfn, "capi/controllers/%d", card->cnr);
-	card->procent = create_proc_entry(card->procfn, 0, NULL);
-	if (card->procent) {
-	   card->procent->read_proc = 
-		(int (*)(char *,char **,off_t,int,int *,void *))
-			card->ctr_read_proc;
-	   card->procent->data = card;
-	}
+	card->procent = proc_create_data(card->procfn, 0, NULL, card->proc_fops, card);
 
 	ncards++;
 	printk(KERN_NOTICE "kcapi: Controller [%03d]: %s attached\n",
diff -puN drivers/isdn/gigaset/capi.c~proc_fops-convert-drivers-isdn-to-seq_file drivers/isdn/gigaset/capi.c
--- a/drivers/isdn/gigaset/capi.c~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/drivers/isdn/gigaset/capi.c
@@ -13,6 +13,7 @@
 
 #include "gigaset.h"
 #include <linux/ctype.h>
+#include <linux/proc_fs.h>
 #include <linux/isdn/capilli.h>
 #include <linux/isdn/capicmd.h>
 #include <linux/isdn/capiutil.h>
@@ -2106,35 +2107,22 @@ static char *gigaset_procinfo(struct cap
 	return ctr->name;	/* ToDo: more? */
 }
 
-/**
- * gigaset_ctr_read_proc() - build controller proc file entry
- * @page:	buffer of PAGE_SIZE bytes for receiving the entry.
- * @start:	unused.
- * @off:	unused.
- * @count:	unused.
- * @eof:	unused.
- * @ctr:	controller descriptor structure.
- *
- * Return value: length of generated entry
- */
-static int gigaset_ctr_read_proc(char *page, char **start, off_t off,
-			  int count, int *eof, struct capi_ctr *ctr)
+static int gigaset_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctr = m->private;
 	struct cardstate *cs = ctr->driverdata;
 	char *s;
 	int i;
-	int len = 0;
-	len += sprintf(page+len, "%-16s %s\n", "name", ctr->name);
-	len += sprintf(page+len, "%-16s %s %s\n", "dev",
+
+	seq_printf(m, "%-16s %s\n", "name", ctr->name);
+	seq_printf(m, "%-16s %s %s\n", "dev",
 			dev_driver_string(cs->dev), dev_name(cs->dev));
-	len += sprintf(page+len, "%-16s %d\n", "id", cs->myid);
+	seq_printf(m, "%-16s %d\n", "id", cs->myid);
 	if (cs->gotfwver)
-		len += sprintf(page+len, "%-16s %d.%d.%d.%d\n", "firmware",
+		seq_printf(m, "%-16s %d.%d.%d.%d\n", "firmware",
 			cs->fwver[0], cs->fwver[1], cs->fwver[2], cs->fwver[3]);
-	len += sprintf(page+len, "%-16s %d\n", "channels",
-			cs->channels);
-	len += sprintf(page+len, "%-16s %s\n", "onechannel",
-			cs->onechannel ? "yes" : "no");
+	seq_printf(m, "%-16s %d\n", "channels", cs->channels);
+	seq_printf(m, "%-16s %s\n", "onechannel", cs->onechannel ? "yes" : "no");
 
 	switch (cs->mode) {
 	case M_UNKNOWN:
@@ -2152,7 +2140,7 @@ static int gigaset_ctr_read_proc(char *p
 	default:
 		s = "??";
 	}
-	len += sprintf(page+len, "%-16s %s\n", "mode", s);
+	seq_printf(m, "%-16s %s\n", "mode", s);
 
 	switch (cs->mstate) {
 	case MS_UNINITIALIZED:
@@ -2176,25 +2164,25 @@ static int gigaset_ctr_read_proc(char *p
 	default:
 		s = "??";
 	}
-	len += sprintf(page+len, "%-16s %s\n", "mstate", s);
+	seq_printf(m, "%-16s %s\n", "mstate", s);
 
-	len += sprintf(page+len, "%-16s %s\n", "running",
+	seq_printf(m, "%-16s %s\n", "running",
 			cs->running ? "yes" : "no");
-	len += sprintf(page+len, "%-16s %s\n", "connected",
+	seq_printf(m, "%-16s %s\n", "connected",
 			cs->connected ? "yes" : "no");
-	len += sprintf(page+len, "%-16s %s\n", "isdn_up",
+	seq_printf(m, "%-16s %s\n", "isdn_up",
 			cs->isdn_up ? "yes" : "no");
-	len += sprintf(page+len, "%-16s %s\n", "cidmode",
+	seq_printf(m, "%-16s %s\n", "cidmode",
 			cs->cidmode ? "yes" : "no");
 
 	for (i = 0; i < cs->channels; i++) {
-		len += sprintf(page+len, "[%d]%-13s %d\n", i, "corrupted",
+		seq_printf(m, "[%d]%-13s %d\n", i, "corrupted",
 				cs->bcs[i].corrupted);
-		len += sprintf(page+len, "[%d]%-13s %d\n", i, "trans_down",
+		seq_printf(m, "[%d]%-13s %d\n", i, "trans_down",
 				cs->bcs[i].trans_down);
-		len += sprintf(page+len, "[%d]%-13s %d\n", i, "trans_up",
+		seq_printf(m, "[%d]%-13s %d\n", i, "trans_up",
 				cs->bcs[i].trans_up);
-		len += sprintf(page+len, "[%d]%-13s %d\n", i, "chstate",
+		seq_printf(m, "[%d]%-13s %d\n", i, "chstate",
 				cs->bcs[i].chstate);
 		switch (cs->bcs[i].proto2) {
 		case L2_BITSYNC:
@@ -2209,11 +2197,24 @@ static int gigaset_ctr_read_proc(char *p
 		default:
 			s = "??";
 		}
-		len += sprintf(page+len, "[%d]%-13s %s\n", i, "proto2", s);
+		seq_printf(m, "[%d]%-13s %s\n", i, "proto2", s);
 	}
-	return len;
+	return 0;
 }
 
+static int gigaset_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, gigaset_proc_show, PDE(inode)->data);
+}
+
+static const struct file_operations gigaset_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= gigaset_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 
 static struct capi_driver capi_driver_gigaset = {
 	.name		= "gigaset",
@@ -2256,7 +2257,7 @@ int gigaset_isdn_register(struct cardsta
 	iif->ctr.release_appl  = gigaset_release_appl;
 	iif->ctr.send_message  = gigaset_send_message;
 	iif->ctr.procinfo      = gigaset_procinfo;
-	iif->ctr.ctr_read_proc = gigaset_ctr_read_proc;
+	iif->ctr.proc_fops = &gigaset_proc_fops;
 	INIT_LIST_HEAD(&iif->appls);
 	skb_queue_head_init(&iif->sendqueue);
 	atomic_set(&iif->sendqlen, 0);
diff -puN drivers/isdn/hardware/avm/avmcard.h~proc_fops-convert-drivers-isdn-to-seq_file drivers/isdn/hardware/avm/avmcard.h
--- a/drivers/isdn/hardware/avm/avmcard.h~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/drivers/isdn/hardware/avm/avmcard.h
@@ -556,8 +556,7 @@ u16  b1_send_message(struct capi_ctr *ct
 void b1_parse_version(avmctrl_info *card);
 irqreturn_t b1_interrupt(int interrupt, void *devptr);
 
-int b1ctl_read_proc(char *page, char **start, off_t off,
-        		int count, int *eof, struct capi_ctr *ctrl);
+extern const struct file_operations b1ctl_proc_fops;
 
 avmcard_dmainfo *avmcard_dma_alloc(char *name, struct pci_dev *,
 				   long rsize, long ssize);
@@ -577,7 +576,6 @@ void b1dma_register_appl(struct capi_ctr
 				capi_register_params *rp);
 void b1dma_release_appl(struct capi_ctr *ctrl, u16 appl);
 u16  b1dma_send_message(struct capi_ctr *ctrl, struct sk_buff *skb);
-int b1dmactl_read_proc(char *page, char **start, off_t off,
-        		int count, int *eof, struct capi_ctr *ctrl);
+extern const struct file_operations b1dmactl_proc_fops;
 
 #endif /* _AVMCARD_H_ */
diff -puN drivers/isdn/hardware/avm/b1.c~proc_fops-convert-drivers-isdn-to-seq_file drivers/isdn/hardware/avm/b1.c
--- a/drivers/isdn/hardware/avm/b1.c~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/drivers/isdn/hardware/avm/b1.c
@@ -12,6 +12,8 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/skbuff.h>
 #include <linux/delay.h>
 #include <linux/mm.h>
@@ -634,18 +636,17 @@ irqreturn_t b1_interrupt(int interrupt, 
 }
 
 /* ------------------------------------------------------------- */
-int b1ctl_read_proc(char *page, char **start, off_t off,
-        		int count, int *eof, struct capi_ctr *ctrl)
+static int b1ctl_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctrl = m->private;
 	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 	avmcard *card = cinfo->card;
 	u8 flag;
-	int len = 0;
 	char *s;
 
-	len += sprintf(page+len, "%-16s %s\n", "name", card->name);
-	len += sprintf(page+len, "%-16s 0x%x\n", "io", card->port);
-	len += sprintf(page+len, "%-16s %d\n", "irq", card->irq);
+	seq_printf(m, "%-16s %s\n", "name", card->name);
+	seq_printf(m, "%-16s 0x%x\n", "io", card->port);
+	seq_printf(m, "%-16s %d\n", "irq", card->irq);
 	switch (card->cardtype) {
 	case avm_b1isa: s = "B1 ISA"; break;
 	case avm_b1pci: s = "B1 PCI"; break;
@@ -658,20 +659,20 @@ int b1ctl_read_proc(char *page, char **s
 	case avm_c2: s = "C2"; break;
 	default: s = "???"; break;
 	}
-	len += sprintf(page+len, "%-16s %s\n", "type", s);
+	seq_printf(m, "%-16s %s\n", "type", s);
 	if (card->cardtype == avm_t1isa)
-	   len += sprintf(page+len, "%-16s %d\n", "cardnr", card->cardnr);
+		seq_printf(m, "%-16s %d\n", "cardnr", card->cardnr);
 	if ((s = cinfo->version[VER_DRIVER]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_driver", s);
+		seq_printf(m, "%-16s %s\n", "ver_driver", s);
 	if ((s = cinfo->version[VER_CARDTYPE]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s);
+		seq_printf(m, "%-16s %s\n", "ver_cardtype", s);
 	if ((s = cinfo->version[VER_SERIAL]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_serial", s);
+		seq_printf(m, "%-16s %s\n", "ver_serial", s);
 
 	if (card->cardtype != avm_m1) {
         	flag = ((u8 *)(ctrl->profile.manu))[3];
         	if (flag)
-			len += sprintf(page+len, "%-16s%s%s%s%s%s%s%s\n",
+			seq_printf(m, "%-16s%s%s%s%s%s%s%s\n",
 			"protocol",
 			(flag & 0x01) ? " DSS1" : "",
 			(flag & 0x02) ? " CT1" : "",
@@ -685,7 +686,7 @@ int b1ctl_read_proc(char *page, char **s
 	if (card->cardtype != avm_m1) {
         	flag = ((u8 *)(ctrl->profile.manu))[5];
 		if (flag)
-			len += sprintf(page+len, "%-16s%s%s%s%s\n",
+			seq_printf(m, "%-16s%s%s%s%s\n",
 			"linetype",
 			(flag & 0x01) ? " point to point" : "",
 			(flag & 0x02) ? " point to multipoint" : "",
@@ -693,16 +694,25 @@ int b1ctl_read_proc(char *page, char **s
 			(flag & 0x04) ? " leased line with D-channel" : ""
 			);
 	}
-	len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname);
+	seq_printf(m, "%-16s %s\n", "cardname", cinfo->cardname);
 
-	if (off+count >= len)
-	   *eof = 1;
-	if (len < off)
-           return 0;
-	*start = page + off;
-	return ((count < len-off) ? count : len-off);
+	return 0;
+}
+
+static int b1ctl_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, b1ctl_proc_show, PDE(inode)->data);
 }
 
+const struct file_operations b1ctl_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= b1ctl_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+EXPORT_SYMBOL(b1ctl_proc_fops);
+
 /* ------------------------------------------------------------- */
 
 #ifdef CONFIG_PCI
@@ -781,8 +791,6 @@ EXPORT_SYMBOL(b1_send_message);
 EXPORT_SYMBOL(b1_parse_version);
 EXPORT_SYMBOL(b1_interrupt);
 
-EXPORT_SYMBOL(b1ctl_read_proc);
-
 static int __init b1_init(void)
 {
 	char *p;
diff -puN drivers/isdn/hardware/avm/b1dma.c~proc_fops-convert-drivers-isdn-to-seq_file drivers/isdn/hardware/avm/b1dma.c
--- a/drivers/isdn/hardware/avm/b1dma.c~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/drivers/isdn/hardware/avm/b1dma.c
@@ -11,6 +11,8 @@
 
 #include <linux/module.h>
 #include <linux/kernel.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/skbuff.h>
 #include <linux/delay.h>
 #include <linux/mm.h>
@@ -855,21 +857,20 @@ u16 b1dma_send_message(struct capi_ctr *
 
 /* ------------------------------------------------------------- */
 
-int b1dmactl_read_proc(char *page, char **start, off_t off,
-        		int count, int *eof, struct capi_ctr *ctrl)
+static int b1dmactl_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctrl = m->private;
 	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 	avmcard *card = cinfo->card;
 	u8 flag;
-	int len = 0;
 	char *s;
 	u32 txoff, txlen, rxoff, rxlen, csr;
 	unsigned long flags;
 
-	len += sprintf(page+len, "%-16s %s\n", "name", card->name);
-	len += sprintf(page+len, "%-16s 0x%x\n", "io", card->port);
-	len += sprintf(page+len, "%-16s %d\n", "irq", card->irq);
-	len += sprintf(page+len, "%-16s 0x%lx\n", "membase", card->membase);
+	seq_printf(m, "%-16s %s\n", "name", card->name);
+	seq_printf(m, "%-16s 0x%x\n", "io", card->port);
+	seq_printf(m, "%-16s %d\n", "irq", card->irq);
+	seq_printf(m, "%-16s 0x%lx\n", "membase", card->membase);
 	switch (card->cardtype) {
 	case avm_b1isa: s = "B1 ISA"; break;
 	case avm_b1pci: s = "B1 PCI"; break;
@@ -882,18 +883,18 @@ int b1dmactl_read_proc(char *page, char 
 	case avm_c2: s = "C2"; break;
 	default: s = "???"; break;
 	}
-	len += sprintf(page+len, "%-16s %s\n", "type", s);
+	seq_printf(m, "%-16s %s\n", "type", s);
 	if ((s = cinfo->version[VER_DRIVER]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_driver", s);
+		seq_printf(m, "%-16s %s\n", "ver_driver", s);
 	if ((s = cinfo->version[VER_CARDTYPE]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s);
+		seq_printf(m, "%-16s %s\n", "ver_cardtype", s);
 	if ((s = cinfo->version[VER_SERIAL]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_serial", s);
+		seq_printf(m, "%-16s %s\n", "ver_serial", s);
 
 	if (card->cardtype != avm_m1) {
         	flag = ((u8 *)(ctrl->profile.manu))[3];
         	if (flag)
-			len += sprintf(page+len, "%-16s%s%s%s%s%s%s%s\n",
+			seq_printf(m, "%-16s%s%s%s%s%s%s%s\n",
 			"protocol",
 			(flag & 0x01) ? " DSS1" : "",
 			(flag & 0x02) ? " CT1" : "",
@@ -907,7 +908,7 @@ int b1dmactl_read_proc(char *page, char 
 	if (card->cardtype != avm_m1) {
         	flag = ((u8 *)(ctrl->profile.manu))[5];
 		if (flag)
-			len += sprintf(page+len, "%-16s%s%s%s%s\n",
+			seq_printf(m, "%-16s%s%s%s%s\n",
 			"linetype",
 			(flag & 0x01) ? " point to point" : "",
 			(flag & 0x02) ? " point to multipoint" : "",
@@ -915,7 +916,7 @@ int b1dmactl_read_proc(char *page, char 
 			(flag & 0x04) ? " leased line with D-channel" : ""
 			);
 	}
-	len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname);
+	seq_printf(m, "%-16s %s\n", "cardname", cinfo->cardname);
 
 
 	spin_lock_irqsave(&card->lock, flags);
@@ -930,27 +931,30 @@ int b1dmactl_read_proc(char *page, char 
 
 	spin_unlock_irqrestore(&card->lock, flags);
 
-        len += sprintf(page+len, "%-16s 0x%lx\n",
-				"csr (cached)", (unsigned long)card->csr);
-        len += sprintf(page+len, "%-16s 0x%lx\n",
-				"csr", (unsigned long)csr);
-        len += sprintf(page+len, "%-16s %lu\n",
-				"txoff", (unsigned long)txoff);
-        len += sprintf(page+len, "%-16s %lu\n",
-				"txlen", (unsigned long)txlen);
-        len += sprintf(page+len, "%-16s %lu\n",
-				"rxoff", (unsigned long)rxoff);
-        len += sprintf(page+len, "%-16s %lu\n",
-				"rxlen", (unsigned long)rxlen);
-
-	if (off+count >= len)
-	   *eof = 1;
-	if (len < off)
-           return 0;
-	*start = page + off;
-	return ((count < len-off) ? count : len-off);
+	seq_printf(m, "%-16s 0x%lx\n", "csr (cached)", (unsigned long)card->csr);
+	seq_printf(m, "%-16s 0x%lx\n", "csr", (unsigned long)csr);
+	seq_printf(m, "%-16s %lu\n", "txoff", (unsigned long)txoff);
+	seq_printf(m, "%-16s %lu\n", "txlen", (unsigned long)txlen);
+	seq_printf(m, "%-16s %lu\n", "rxoff", (unsigned long)rxoff);
+	seq_printf(m, "%-16s %lu\n", "rxlen", (unsigned long)rxlen);
+
+	return 0;
+}
+
+static int b1dmactl_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, b1dmactl_proc_show, PDE(inode)->data);
 }
 
+const struct file_operations b1dmactl_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= b1dmactl_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+EXPORT_SYMBOL(b1dmactl_proc_fops);
+
 /* ------------------------------------------------------------- */
 
 EXPORT_SYMBOL(b1dma_reset);
@@ -963,7 +967,6 @@ EXPORT_SYMBOL(b1dma_reset_ctr);
 EXPORT_SYMBOL(b1dma_register_appl);
 EXPORT_SYMBOL(b1dma_release_appl);
 EXPORT_SYMBOL(b1dma_send_message);
-EXPORT_SYMBOL(b1dmactl_read_proc);
 
 static int __init b1dma_init(void)
 {
diff -puN drivers/isdn/hardware/avm/b1isa.c~proc_fops-convert-drivers-isdn-to-seq_file drivers/isdn/hardware/avm/b1isa.c
--- a/drivers/isdn/hardware/avm/b1isa.c~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/drivers/isdn/hardware/avm/b1isa.c
@@ -121,7 +121,7 @@ static int b1isa_probe(struct pci_dev *p
 	cinfo->capi_ctrl.load_firmware = b1_load_firmware;
 	cinfo->capi_ctrl.reset_ctr     = b1_reset_ctr;
 	cinfo->capi_ctrl.procinfo      = b1isa_procinfo;
-	cinfo->capi_ctrl.ctr_read_proc = b1ctl_read_proc;
+	cinfo->capi_ctrl.proc_fops = &b1ctl_proc_fops;
 	strcpy(cinfo->capi_ctrl.name, card->name);
 
 	retval = attach_capi_ctr(&cinfo->capi_ctrl);
diff -puN drivers/isdn/hardware/avm/b1pci.c~proc_fops-convert-drivers-isdn-to-seq_file drivers/isdn/hardware/avm/b1pci.c
--- a/drivers/isdn/hardware/avm/b1pci.c~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/drivers/isdn/hardware/avm/b1pci.c
@@ -112,7 +112,7 @@ static int b1pci_probe(struct capicardpa
 	cinfo->capi_ctrl.load_firmware = b1_load_firmware;
 	cinfo->capi_ctrl.reset_ctr     = b1_reset_ctr;
 	cinfo->capi_ctrl.procinfo      = b1pci_procinfo;
-	cinfo->capi_ctrl.ctr_read_proc = b1ctl_read_proc;
+	cinfo->capi_ctrl.proc_fops = &b1ctl_proc_fops;
 	strcpy(cinfo->capi_ctrl.name, card->name);
 	cinfo->capi_ctrl.owner         = THIS_MODULE;
 
@@ -251,7 +251,7 @@ static int b1pciv4_probe(struct capicard
 	cinfo->capi_ctrl.load_firmware = b1dma_load_firmware;
 	cinfo->capi_ctrl.reset_ctr     = b1dma_reset_ctr;
 	cinfo->capi_ctrl.procinfo      = b1pciv4_procinfo;
-	cinfo->capi_ctrl.ctr_read_proc = b1dmactl_read_proc;
+	cinfo->capi_ctrl.proc_fops = &b1dmactl_proc_fops;
 	strcpy(cinfo->capi_ctrl.name, card->name);
 
 	retval = attach_capi_ctr(&cinfo->capi_ctrl);
diff -puN drivers/isdn/hardware/avm/b1pcmcia.c~proc_fops-convert-drivers-isdn-to-seq_file drivers/isdn/hardware/avm/b1pcmcia.c
--- a/drivers/isdn/hardware/avm/b1pcmcia.c~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/drivers/isdn/hardware/avm/b1pcmcia.c
@@ -108,7 +108,7 @@ static int b1pcmcia_add_card(unsigned in
 	cinfo->capi_ctrl.load_firmware = b1_load_firmware;
 	cinfo->capi_ctrl.reset_ctr     = b1_reset_ctr;
 	cinfo->capi_ctrl.procinfo      = b1pcmcia_procinfo;
-	cinfo->capi_ctrl.ctr_read_proc = b1ctl_read_proc;
+	cinfo->capi_ctrl.proc_fops = &b1ctl_proc_fops;
 	strcpy(cinfo->capi_ctrl.name, card->name);
 
 	retval = attach_capi_ctr(&cinfo->capi_ctrl);
diff -puN drivers/isdn/hardware/avm/c4.c~proc_fops-convert-drivers-isdn-to-seq_file drivers/isdn/hardware/avm/c4.c
--- a/drivers/isdn/hardware/avm/c4.c~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/drivers/isdn/hardware/avm/c4.c
@@ -11,6 +11,8 @@
 
 #include <linux/module.h>
 #include <linux/kernel.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/skbuff.h>
 #include <linux/delay.h>
 #include <linux/mm.h>
@@ -1062,19 +1064,18 @@ static char *c4_procinfo(struct capi_ctr
 	return cinfo->infobuf;
 }
 
-static int c4_read_proc(char *page, char **start, off_t off,
-        		int count, int *eof, struct capi_ctr *ctrl)
+static int c4_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctrl = m->private;
 	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 	avmcard *card = cinfo->card;
 	u8 flag;
-	int len = 0;
 	char *s;
 
-	len += sprintf(page+len, "%-16s %s\n", "name", card->name);
-	len += sprintf(page+len, "%-16s 0x%x\n", "io", card->port);
-	len += sprintf(page+len, "%-16s %d\n", "irq", card->irq);
-	len += sprintf(page+len, "%-16s 0x%lx\n", "membase", card->membase);
+	seq_printf(m, "%-16s %s\n", "name", card->name);
+	seq_printf(m, "%-16s 0x%x\n", "io", card->port);
+	seq_printf(m, "%-16s %d\n", "irq", card->irq);
+	seq_printf(m, "%-16s 0x%lx\n", "membase", card->membase);
 	switch (card->cardtype) {
 	case avm_b1isa: s = "B1 ISA"; break;
 	case avm_b1pci: s = "B1 PCI"; break;
@@ -1087,18 +1088,18 @@ static int c4_read_proc(char *page, char
 	case avm_c2: s = "C2"; break;
 	default: s = "???"; break;
 	}
-	len += sprintf(page+len, "%-16s %s\n", "type", s);
+	seq_printf(m, "%-16s %s\n", "type", s);
 	if ((s = cinfo->version[VER_DRIVER]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_driver", s);
+		seq_printf(m, "%-16s %s\n", "ver_driver", s);
 	if ((s = cinfo->version[VER_CARDTYPE]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s);
+		seq_printf(m, "%-16s %s\n", "ver_cardtype", s);
 	if ((s = cinfo->version[VER_SERIAL]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_serial", s);
+		seq_printf(m, "%-16s %s\n", "ver_serial", s);
 
 	if (card->cardtype != avm_m1) {
         	flag = ((u8 *)(ctrl->profile.manu))[3];
         	if (flag)
-			len += sprintf(page+len, "%-16s%s%s%s%s%s%s%s\n",
+			seq_printf(m, "%-16s%s%s%s%s%s%s%s\n",
 			"protocol",
 			(flag & 0x01) ? " DSS1" : "",
 			(flag & 0x02) ? " CT1" : "",
@@ -1112,7 +1113,7 @@ static int c4_read_proc(char *page, char
 	if (card->cardtype != avm_m1) {
         	flag = ((u8 *)(ctrl->profile.manu))[5];
 		if (flag)
-			len += sprintf(page+len, "%-16s%s%s%s%s\n",
+			seq_printf(m, "%-16s%s%s%s%s\n",
 			"linetype",
 			(flag & 0x01) ? " point to point" : "",
 			(flag & 0x02) ? " point to multipoint" : "",
@@ -1120,16 +1121,24 @@ static int c4_read_proc(char *page, char
 			(flag & 0x04) ? " leased line with D-channel" : ""
 			);
 	}
-	len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname);
+	seq_printf(m, "%-16s %s\n", "cardname", cinfo->cardname);
 
-	if (off+count >= len)
-	   *eof = 1;
-	if (len < off)
-           return 0;
-	*start = page + off;
-	return ((count < len-off) ? count : len-off);
+	return 0;
+}
+
+static int c4_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, c4_proc_show, PDE(inode)->data);
 }
 
+static const struct file_operations c4_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= c4_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 /* ------------------------------------------------------------- */
 
 static int c4_add_card(struct capicardparams *p, struct pci_dev *dev,
@@ -1201,7 +1210,7 @@ static int c4_add_card(struct capicardpa
 		cinfo->capi_ctrl.load_firmware = c4_load_firmware;
 		cinfo->capi_ctrl.reset_ctr     = c4_reset_ctr;
 		cinfo->capi_ctrl.procinfo      = c4_procinfo;
-		cinfo->capi_ctrl.ctr_read_proc = c4_read_proc;
+		cinfo->capi_ctrl.proc_fops = &c4_proc_fops;
 		strcpy(cinfo->capi_ctrl.name, card->name);
 
 		retval = attach_capi_ctr(&cinfo->capi_ctrl);
diff -puN drivers/isdn/hardware/avm/t1isa.c~proc_fops-convert-drivers-isdn-to-seq_file drivers/isdn/hardware/avm/t1isa.c
--- a/drivers/isdn/hardware/avm/t1isa.c~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/drivers/isdn/hardware/avm/t1isa.c
@@ -429,7 +429,7 @@ static int t1isa_probe(struct pci_dev *p
 	cinfo->capi_ctrl.load_firmware = t1isa_load_firmware;
 	cinfo->capi_ctrl.reset_ctr     = t1isa_reset_ctr;
 	cinfo->capi_ctrl.procinfo      = t1isa_procinfo;
-	cinfo->capi_ctrl.ctr_read_proc = b1ctl_read_proc;
+	cinfo->capi_ctrl.proc_fops = &b1ctl_proc_fops;
 	strcpy(cinfo->capi_ctrl.name, card->name);
 
 	retval = attach_capi_ctr(&cinfo->capi_ctrl);
diff -puN drivers/isdn/hardware/avm/t1pci.c~proc_fops-convert-drivers-isdn-to-seq_file drivers/isdn/hardware/avm/t1pci.c
--- a/drivers/isdn/hardware/avm/t1pci.c~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/drivers/isdn/hardware/avm/t1pci.c
@@ -119,7 +119,7 @@ static int t1pci_add_card(struct capicar
 	cinfo->capi_ctrl.load_firmware = b1dma_load_firmware;
 	cinfo->capi_ctrl.reset_ctr     = b1dma_reset_ctr;
 	cinfo->capi_ctrl.procinfo      = t1pci_procinfo;
-	cinfo->capi_ctrl.ctr_read_proc = b1dmactl_read_proc;
+	cinfo->capi_ctrl.proc_fops = &b1dmactl_proc_fops;
 	strcpy(cinfo->capi_ctrl.name, card->name);
 
 	retval = attach_capi_ctr(&cinfo->capi_ctrl);
diff -puN drivers/isdn/hardware/eicon/capimain.c~proc_fops-convert-drivers-isdn-to-seq_file drivers/isdn/hardware/eicon/capimain.c
--- a/drivers/isdn/hardware/eicon/capimain.c~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/drivers/isdn/hardware/eicon/capimain.c
@@ -13,6 +13,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <asm/uaccess.h>
+#include <linux/seq_file.h>
 #include <linux/skbuff.h>
 
 #include "os_capi.h"
@@ -75,25 +76,32 @@ void diva_os_free_message_buffer(diva_os
 /*
  * proc function for controller info
  */
-static int diva_ctl_read_proc(char *page, char **start, off_t off,
-			      int count, int *eof, struct capi_ctr *ctrl)
+static int diva_ctl_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctrl = m->private;
 	diva_card *card = (diva_card *) ctrl->driverdata;
-	int len = 0;
 
-	len += sprintf(page + len, "%s\n", ctrl->name);
-	len += sprintf(page + len, "Serial No. : %s\n", ctrl->serial);
-	len += sprintf(page + len, "Id         : %d\n", card->Id);
-	len += sprintf(page + len, "Channels   : %d\n", card->d.channels);
-
-	if (off + count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len - off) ? count : len - off);
+	seq_printf(m, "%s\n", ctrl->name);
+	seq_printf(m, "Serial No. : %s\n", ctrl->serial);
+	seq_printf(m, "Id         : %d\n", card->Id);
+	seq_printf(m, "Channels   : %d\n", card->d.channels);
+
+	return 0;
 }
 
+static int diva_ctl_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, diva_ctl_proc_show, NULL);
+}
+
+static const struct file_operations diva_ctl_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= diva_ctl_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 /*
  * set additional os settings in capi_ctr struct
  */
@@ -102,7 +110,7 @@ void diva_os_set_controller_struct(struc
 	ctrl->driver_name = DRIVERLNAME;
 	ctrl->load_firmware = NULL;
 	ctrl->reset_ctr = NULL;
-	ctrl->ctr_read_proc = diva_ctl_read_proc;
+	ctrl->proc_fops = &diva_ctl_proc_fops;
 	ctrl->owner = THIS_MODULE;
 }
 
diff -puN drivers/isdn/hardware/eicon/diva_didd.c~proc_fops-convert-drivers-isdn-to-seq_file drivers/isdn/hardware/eicon/diva_didd.c
--- a/drivers/isdn/hardware/eicon/diva_didd.c~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/drivers/isdn/hardware/eicon/diva_didd.c
@@ -62,39 +62,41 @@ static char *getrev(const char *revision
 	return rev;
 }
 
-static int
-proc_read(char *page, char **start, off_t off, int count, int *eof,
-	  void *data)
+static int divadidd_proc_show(struct seq_file *m, void *v)
 {
-	int len = 0;
 	char tmprev[32];
 
 	strcpy(tmprev, main_revision);
-	len += sprintf(page + len, "%s\n", DRIVERNAME);
-	len += sprintf(page + len, "name     : %s\n", DRIVERLNAME);
-	len += sprintf(page + len, "release  : %s\n", DRIVERRELEASE_DIDD);
-	len += sprintf(page + len, "build    : %s(%s)\n",
+	seq_printf(m, "%s\n", DRIVERNAME);
+	seq_printf(m, "name     : %s\n", DRIVERLNAME);
+	seq_printf(m, "release  : %s\n", DRIVERRELEASE_DIDD);
+	seq_printf(m, "build    : %s(%s)\n",
 		       diva_didd_common_code_build, DIVA_BUILD);
-	len += sprintf(page + len, "revision : %s\n", getrev(tmprev));
+	seq_printf(m, "revision : %s\n", getrev(tmprev));
 
-	if (off + count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len - off) ? count : len - off);
+	return 0;
 }
 
+static int divadidd_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, divadidd_proc_show, NULL);
+}
+
+static const struct file_operations divadidd_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= divadidd_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 static int DIVA_INIT_FUNCTION create_proc(void)
 {
 	proc_net_eicon = proc_mkdir("eicon", init_net.proc_net);
 
 	if (proc_net_eicon) {
-		if ((proc_didd =
-		     create_proc_entry(DRIVERLNAME, S_IFREG | S_IRUGO,
-				       proc_net_eicon))) {
-			proc_didd->read_proc = proc_read;
-		}
+		proc_didd = proc_create(DRIVERLNAME, S_IRUGO, proc_net_eicon,
+					&divadidd_proc_fops);
 		return (1);
 	}
 	return (0);
diff -puN drivers/isdn/hardware/eicon/divasi.c~proc_fops-convert-drivers-isdn-to-seq_file drivers/isdn/hardware/eicon/divasi.c
--- a/drivers/isdn/hardware/eicon/divasi.c~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/drivers/isdn/hardware/eicon/divasi.c
@@ -17,6 +17,7 @@
 #include <linux/poll.h>
 #include <linux/proc_fs.h>
 #include <linux/skbuff.h>
+#include <linux/seq_file.h>
 #include <linux/smp_lock.h>
 #include <asm/uaccess.h>
 
@@ -86,39 +87,40 @@ static void diva_um_timer_function(unsig
 extern struct proc_dir_entry *proc_net_eicon;
 static struct proc_dir_entry *um_idi_proc_entry = NULL;
 
-static int
-um_idi_proc_read(char *page, char **start, off_t off, int count, int *eof,
-		 void *data)
+static int um_idi_proc_show(struct seq_file *m, void *v)
 {
-	int len = 0;
 	char tmprev[32];
 
-	len += sprintf(page + len, "%s\n", DRIVERNAME);
-	len += sprintf(page + len, "name     : %s\n", DRIVERLNAME);
-	len += sprintf(page + len, "release  : %s\n", DRIVERRELEASE_IDI);
+	seq_printf(m, "%s\n", DRIVERNAME);
+	seq_printf(m, "name     : %s\n", DRIVERLNAME);
+	seq_printf(m, "release  : %s\n", DRIVERRELEASE_IDI);
 	strcpy(tmprev, main_revision);
-	len += sprintf(page + len, "revision : %s\n", getrev(tmprev));
-	len += sprintf(page + len, "build    : %s\n", DIVA_BUILD);
-	len += sprintf(page + len, "major    : %d\n", major);
-
-	if (off + count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len - off) ? count : len - off);
+	seq_printf(m, "revision : %s\n", getrev(tmprev));
+	seq_printf(m, "build    : %s\n", DIVA_BUILD);
+	seq_printf(m, "major    : %d\n", major);
+
+	return 0;
+}
+
+static int um_idi_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, um_idi_proc_show, NULL);
 }
 
+static const struct file_operations um_idi_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= um_idi_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 static int DIVA_INIT_FUNCTION create_um_idi_proc(void)
 {
-	um_idi_proc_entry = create_proc_entry(DRIVERLNAME,
-					      S_IFREG | S_IRUGO | S_IWUSR,
-					      proc_net_eicon);
+	um_idi_proc_entry = proc_create(DRIVERLNAME, S_IRUGO, proc_net_eicon,
+					&um_idi_proc_fops);
 	if (!um_idi_proc_entry)
 		return (0);
-
-	um_idi_proc_entry->read_proc = um_idi_proc_read;
-
 	return (1);
 }
 
diff -puN drivers/isdn/hardware/eicon/divasproc.c~proc_fops-convert-drivers-isdn-to-seq_file drivers/isdn/hardware/eicon/divasproc.c
--- a/drivers/isdn/hardware/eicon/divasproc.c~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/drivers/isdn/hardware/eicon/divasproc.c
@@ -14,6 +14,7 @@
 #include <linux/kernel.h>
 #include <linux/poll.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/list.h>
 #include <asm/uaccess.h>
 
@@ -141,14 +142,10 @@ void remove_divas_proc(void)
 	}
 }
 
-/*
-** write group_optimization 
-*/
-static int
-write_grp_opt(struct file *file, const char __user *buffer, unsigned long count,
-	      void *data)
+static ssize_t grp_opt_proc_write(struct file *file, const char __user *buffer,
+				  size_t count, loff_t *pos)
 {
-	diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) data;
+	diva_os_xdi_adapter_t *a = PDE(file->f_path.dentry->d_inode)->data;
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 
 	if ((count == 1) || (count == 2)) {
@@ -172,14 +169,10 @@ write_grp_opt(struct file *file, const c
 	return (-EINVAL);
 }
 
-/*
-** write dynamic_l1_down
-*/
-static int
-write_d_l1_down(struct file *file, const char __user *buffer, unsigned long count,
-		void *data)
+static ssize_t d_l1_down_proc_write(struct file *file, const char __user *buffer,
+				    size_t count, loff_t *pos)
 {
-	diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) data;
+	diva_os_xdi_adapter_t *a = PDE(file->f_path.dentry->d_inode)->data;
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 
 	if ((count == 1) || (count == 2)) {
@@ -203,63 +196,62 @@ write_d_l1_down(struct file *file, const
 	return (-EINVAL);
 }
 
-
-/*
-** read dynamic_l1_down 
-*/
-static int
-read_d_l1_down(char *page, char **start, off_t off, int count, int *eof,
-	       void *data)
+static int d_l1_down_proc_show(struct seq_file *m, void *v)
 {
-	int len = 0;
-	diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) data;
+	diva_os_xdi_adapter_t *a = m->private;
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 
-	len += sprintf(page + len, "%s\n",
+	seq_printf(m, "%s\n",
 		       (IoAdapter->capi_cfg.
 			cfg_1 & DIVA_XDI_CAPI_CFG_1_DYNAMIC_L1_ON) ? "1" :
 		       "0");
+	return 0;
+}
 
-	if (off + count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len - off) ? count : len - off);
+static int d_l1_down_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, d_l1_down_proc_show, PDE(inode)->data);
 }
 
-/*
-** read group_optimization
-*/
-static int
-read_grp_opt(char *page, char **start, off_t off, int count, int *eof,
-	     void *data)
+static const struct file_operations d_l1_down_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= d_l1_down_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+	.write		= d_l1_down_proc_write,
+};
+
+static int grp_opt_proc_show(struct seq_file *m, void *v)
 {
-	int len = 0;
-	diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) data;
+	diva_os_xdi_adapter_t *a = m->private;
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 
-	len += sprintf(page + len, "%s\n",
+	seq_printf(m, "%s\n",
 		       (IoAdapter->capi_cfg.
 			cfg_1 & DIVA_XDI_CAPI_CFG_1_GROUP_POPTIMIZATION_ON)
 		       ? "1" : "0");
+	return 0;
+}
 
-	if (off + count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len - off) ? count : len - off);
+static int grp_opt_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, grp_opt_proc_show, PDE(inode)->data);
 }
 
-/*
-** info write
-*/
-static int
-info_write(struct file *file, const char __user *buffer, unsigned long count,
-	   void *data)
+static const struct file_operations grp_opt_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= grp_opt_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+	.write		= grp_opt_proc_write,
+};
+
+static ssize_t info_proc_write(struct file *file, const char __user *buffer,
+			       size_t count, loff_t *pos)
 {
-	diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) data;
+	diva_os_xdi_adapter_t *a = PDE(file->f_path.dentry->d_inode)->data;
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 	char c[4];
 
@@ -277,63 +269,46 @@ info_write(struct file *file, const char
 	return (-EINVAL);
 }
 
-/*
-** info read
-*/
-static int
-info_read(char *page, char **start, off_t off, int count, int *eof,
-	  void *data)
+static int info_proc_show(struct seq_file *m, void *v)
 {
 	int i = 0;
-	int len = 0;
 	char *p;
 	char tmpser[16];
-	diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) data;
+	diva_os_xdi_adapter_t *a = m->private;
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 
-	len +=
-	    sprintf(page + len, "Name        : %s\n",
-		    IoAdapter->Properties.Name);
-	len += sprintf(page + len, "DSP state   : %08x\n", a->dsp_mask);
-	len += sprintf(page + len, "Channels    : %02d\n",
-		       IoAdapter->Properties.Channels);
-	len += sprintf(page + len, "E. max/used : %03d/%03d\n",
+	seq_printf(m, "Name        : %s\n", IoAdapter->Properties.Name);
+	seq_printf(m, "DSP state   : %08x\n", a->dsp_mask);
+	seq_printf(m, "Channels    : %02d\n", IoAdapter->Properties.Channels);
+	seq_printf(m, "E. max/used : %03d/%03d\n",
 		       IoAdapter->e_max, IoAdapter->e_count);
 	diva_get_vserial_number(IoAdapter, tmpser);
-	len += sprintf(page + len, "Serial      : %s\n", tmpser);
-	len +=
-	    sprintf(page + len, "IRQ         : %d\n",
-		    IoAdapter->irq_info.irq_nr);
-	len += sprintf(page + len, "CardIndex   : %d\n", a->CardIndex);
-	len += sprintf(page + len, "CardOrdinal : %d\n", a->CardOrdinal);
-	len += sprintf(page + len, "Controller  : %d\n", a->controller);
-	len += sprintf(page + len, "Bus-Type    : %s\n",
+	seq_printf(m, "Serial      : %s\n", tmpser);
+	seq_printf(m, "IRQ         : %d\n", IoAdapter->irq_info.irq_nr);
+	seq_printf(m, "CardIndex   : %d\n", a->CardIndex);
+	seq_printf(m, "CardOrdinal : %d\n", a->CardOrdinal);
+	seq_printf(m, "Controller  : %d\n", a->controller);
+	seq_printf(m, "Bus-Type    : %s\n",
 		       (a->Bus ==
 			DIVAS_XDI_ADAPTER_BUS_ISA) ? "ISA" : "PCI");
-	len += sprintf(page + len, "Port-Name   : %s\n", a->port_name);
+	seq_printf(m, "Port-Name   : %s\n", a->port_name);
 	if (a->Bus == DIVAS_XDI_ADAPTER_BUS_PCI) {
-		len +=
-		    sprintf(page + len, "PCI-bus     : %d\n",
-			    a->resources.pci.bus);
-		len +=
-		    sprintf(page + len, "PCI-func    : %d\n",
-			    a->resources.pci.func);
+		seq_printf(m, "PCI-bus     : %d\n", a->resources.pci.bus);
+		seq_printf(m, "PCI-func    : %d\n", a->resources.pci.func);
 		for (i = 0; i < 8; i++) {
 			if (a->resources.pci.bar[i]) {
-				len +=
-				    sprintf(page + len,
+				seq_printf(m,
 					    "Mem / I/O %d : 0x%x / mapped : 0x%lx",
 					    i, a->resources.pci.bar[i],
 					    (unsigned long) a->resources.
 					    pci.addr[i]);
 				if (a->resources.pci.length[i]) {
-					len +=
-					    sprintf(page + len,
+					seq_printf(m,
 						    " / length : %d",
 						    a->resources.pci.
 						    length[i]);
 				}
-				len += sprintf(page + len, "\n");
+				seq_putc(m, '\n');
 			}
 		}
 	}
@@ -353,16 +328,25 @@ info_read(char *page, char **start, off_
 	} else {
 		p = "ready";
 	}
-	len += sprintf(page + len, "State       : %s\n", p);
+	seq_printf(m, "State       : %s\n", p);
 
-	if (off + count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len - off) ? count : len - off);
+	return 0;
+}
+
+static int info_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, info_proc_show, PDE(inode)->data);
 }
 
+static const struct file_operations info_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= info_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+	.write		= info_proc_write,
+};
+
 /*
 ** adapter proc init/de-init
 */
@@ -380,28 +364,20 @@ int create_adapter_proc(diva_os_xdi_adap
 		return (0);
 	a->proc_adapter_dir = (void *) de;
 
-	if (!(pe =
-	     create_proc_entry(info_proc_name, S_IFREG | S_IRUGO | S_IWUSR, de)))
+	pe = proc_create_data(info_proc_name, S_IRUGO | S_IWUSR, de,
+			      &info_proc_fops, a);
+	if (!pe)
 		return (0);
 	a->proc_info = (void *) pe;
-	pe->write_proc = info_write;
-	pe->read_proc = info_read;
-	pe->data = a;
 
-	if ((pe = create_proc_entry(grp_opt_proc_name,
-			       S_IFREG | S_IRUGO | S_IWUSR, de))) {
+	pe = proc_create_data(grp_opt_proc_name, S_IRUGO | S_IWUSR, de,
+			      &grp_opt_proc_fops, a);
+	if (pe)
 		a->proc_grp_opt = (void *) pe;
-		pe->write_proc = write_grp_opt;
-		pe->read_proc = read_grp_opt;
-		pe->data = a;
-	}
-	if ((pe = create_proc_entry(d_l1_down_proc_name,
-			       S_IFREG | S_IRUGO | S_IWUSR, de))) {
+	pe = proc_create_data(d_l1_down_proc_name, S_IRUGO | S_IWUSR, de,
+			      &d_l1_down_proc_fops, a);
+	if (pe)
 		a->proc_d_l1_down = (void *) pe;
-		pe->write_proc = write_d_l1_down;
-		pe->read_proc = read_d_l1_down;
-		pe->data = a;
-	}
 
 	DBG_TRC(("proc entry %s created", tmp));
 
diff -puN drivers/isdn/hysdn/hycapi.c~proc_fops-convert-drivers-isdn-to-seq_file drivers/isdn/hysdn/hycapi.c
--- a/drivers/isdn/hysdn/hycapi.c~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/drivers/isdn/hysdn/hycapi.c
@@ -14,6 +14,7 @@
 #include <linux/signal.h>
 #include <linux/kernel.h>
 #include <linux/skbuff.h>
+#include <linux/proc_fs.h>
 #include <linux/netdevice.h>
 
 #define	VER_DRIVER	0
@@ -432,26 +433,16 @@ static u16 hycapi_send_message(struct ca
 	return retval;
 }
 
-/*********************************************************************
-hycapi_read_proc
-
-Informations provided in the /proc/capi-entries.
-
-*********************************************************************/
-
-static int hycapi_read_proc(char *page, char **start, off_t off,
-			    int count, int *eof, struct capi_ctr *ctrl)
+static int hycapi_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctrl = m->private;
 	hycapictrl_info *cinfo = (hycapictrl_info *)(ctrl->driverdata);
 	hysdn_card *card = cinfo->card;
-	int len = 0;
 	char *s;
-#ifdef HYCAPI_PRINTFNAMES
-	printk(KERN_NOTICE "hycapi_read_proc\n");    
-#endif
-	len += sprintf(page+len, "%-16s %s\n", "name", cinfo->cardname);
-	len += sprintf(page+len, "%-16s 0x%x\n", "io", card->iobase);
-	len += sprintf(page+len, "%-16s %d\n", "irq", card->irq);
+
+	seq_printf(m, "%-16s %s\n", "name", cinfo->cardname);
+	seq_printf(m, "%-16s 0x%x\n", "io", card->iobase);
+	seq_printf(m, "%-16s %d\n", "irq", card->irq);
     
 	switch (card->brdtype) {
 		case BD_PCCARD:  s = "HYSDN Hycard"; break;
@@ -461,24 +452,32 @@ static int hycapi_read_proc(char *page, 
 		case BD_PLEXUS: s = "HYSDN Plexus30"; break;
 		default: s = "???"; break;
 	}
-	len += sprintf(page+len, "%-16s %s\n", "type", s);
+	seq_printf(m, "%-16s %s\n", "type", s);
 	if ((s = cinfo->version[VER_DRIVER]) != NULL)
-		len += sprintf(page+len, "%-16s %s\n", "ver_driver", s);
+		seq_printf(m, "%-16s %s\n", "ver_driver", s);
 	if ((s = cinfo->version[VER_CARDTYPE]) != NULL)
-		len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s);
+		seq_printf(m, "%-16s %s\n", "ver_cardtype", s);
 	if ((s = cinfo->version[VER_SERIAL]) != NULL)
-		len += sprintf(page+len, "%-16s %s\n", "ver_serial", s);
+		seq_printf(m, "%-16s %s\n", "ver_serial", s);
     
-	len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname);
+	seq_printf(m, "%-16s %s\n", "cardname", cinfo->cardname);
     
-	if (off+count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len-off) ? count : len-off);
+	return 0;
+}
+
+static int hycapi_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, hycapi_proc_show, PDE(inode)->data);
 }
 
+static const struct file_operations hycapi_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= hycapi_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 /**************************************************************
 hycapi_load_firmware
 
@@ -774,7 +773,7 @@ hycapi_capi_create(hysdn_card *card)
 		ctrl->load_firmware = hycapi_load_firmware;
 		ctrl->reset_ctr     = hycapi_reset_ctr;
 		ctrl->procinfo      = hycapi_procinfo;
-		ctrl->ctr_read_proc = hycapi_read_proc;
+		ctrl->proc_fops = &hycapi_proc_fops;
 		strcpy(ctrl->name, cinfo->cardname);
 		ctrl->owner = THIS_MODULE;
 
diff -puN include/linux/isdn/capilli.h~proc_fops-convert-drivers-isdn-to-seq_file include/linux/isdn/capilli.h
--- a/include/linux/isdn/capilli.h~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/include/linux/isdn/capilli.h
@@ -50,8 +50,7 @@ struct capi_ctr {
 	u16  (*send_message)(struct capi_ctr *, struct sk_buff *skb);
 	
 	char *(*procinfo)(struct capi_ctr *);
-	int (*ctr_read_proc)(char *page, char **start, off_t off,
-			     int count, int *eof, struct capi_ctr *card);
+	const struct file_operations *proc_fops;
 
 	/* filled in before calling ready callback */
 	u8 manu[CAPI_MANUFACTURER_LEN];		/* CAPI_GET_MANUFACTURER */
diff -puN net/bluetooth/cmtp/capi.c~proc_fops-convert-drivers-isdn-to-seq_file net/bluetooth/cmtp/capi.c
--- a/net/bluetooth/cmtp/capi.c~proc_fops-convert-drivers-isdn-to-seq_file
+++ a/net/bluetooth/cmtp/capi.c
@@ -21,7 +21,8 @@
 */
 
 #include <linux/module.h>
-
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
@@ -516,33 +517,37 @@ static char *cmtp_procinfo(struct capi_c
 	return "CAPI Message Transport Protocol";
 }
 
-static int cmtp_ctr_read_proc(char *page, char **start, off_t off, int count, int *eof, struct capi_ctr *ctrl)
+static int cmtp_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctrl = m->private;
 	struct cmtp_session *session = ctrl->driverdata;
 	struct cmtp_application *app;
 	struct list_head *p, *n;
-	int len = 0;
 
-	len += sprintf(page + len, "%s\n\n", cmtp_procinfo(ctrl));
-	len += sprintf(page + len, "addr %s\n", session->name);
-	len += sprintf(page + len, "ctrl %d\n", session->num);
+	seq_printf(m, "%s\n\n", cmtp_procinfo(ctrl));
+	seq_printf(m, "addr %s\n", session->name);
+	seq_printf(m, "ctrl %d\n", session->num);
 
 	list_for_each_safe(p, n, &session->applications) {
 		app = list_entry(p, struct cmtp_application, list);
-		len += sprintf(page + len, "appl %d -> %d\n", app->appl, app->mapping);
+		seq_printf(m, "appl %d -> %d\n", app->appl, app->mapping);
 	}
 
-	if (off + count >= len)
-		*eof = 1;
-
-	if (len < off)
-		return 0;
-
-	*start = page + off;
+	return 0;
+}
 
-	return ((count < len - off) ? count : len - off);
+static int cmtp_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, cmtp_proc_show, PDE(inode)->data);
 }
 
+static const struct file_operations cmtp_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= cmtp_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
 
 int cmtp_attach_device(struct cmtp_session *session)
 {
@@ -582,7 +587,7 @@ int cmtp_attach_device(struct cmtp_sessi
 	session->ctrl.send_message  = cmtp_send_message;
 
 	session->ctrl.procinfo      = cmtp_procinfo;
-	session->ctrl.ctr_read_proc = cmtp_ctr_read_proc;
+	session->ctrl.proc_fops = &cmtp_proc_fops;
 
 	if (attach_capi_ctr(&session->ctrl) < 0) {
 		BT_ERR("Can't attach new controller");
_

^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [patch 1/2] proc_fops: convert drivers/isdn/ to seq_file
  2009-12-22  0:25 [patch 1/2] proc_fops: convert drivers/isdn/ to seq_file akpm
@ 2009-12-23 12:30 ` Tilman Schmidt
  2010-01-05 21:19   ` Alexey Dobriyan
  2010-01-04  5:26 ` [patch 1/2] " David Miller
  1 sibling, 1 reply; 13+ messages in thread
From: Tilman Schmidt @ 2009-12-23 12:30 UTC (permalink / raw)
  To: adobriyan; +Cc: akpm, isdn, netdev

[-- Attachment #1: Type: text/plain, Size: 1816 bytes --]

Am 22.12.2009 01:25 schrieb akpm@linux-foundation.org:
> From: Alexey Dobriyan <adobriyan@gmail.com>
> 
> Convert code away from ->read_proc/->write_proc interfaces.  Switch to
> proc_create()/proc_create_data() which make addition of proc entries
> reliable wrt NULL ->proc_fops, NULL ->data and so on.

Nice work, certainly an overall win.

> --- a/Documentation/isdn/INTERFACE.CAPI~proc_fops-convert-drivers-isdn-to-seq_file
> +++ a/Documentation/isdn/INTERFACE.CAPI
> @@ -149,8 +149,8 @@ char *(*procinfo)(struct capi_ctr *ctrlr
>  	pointer to a callback function returning the entry for the device in
>  	the CAPI controller info table, /proc/capi/controller
>  
> -read_proc_t *ctr_read_proc
> -	pointer to the read_proc callback function for the device's proc file
> +const struct file_operations *proc_fops
> +	pointers to callback functions for the device's proc file
>  	system entry, /proc/capi/controllers/<n>; will be called with a
>  	pointer to the device's capi_ctr structure as the last (data) argument
>  

As already noted in my mail dated 28.11.2009 13:26, the result of this is
incorrect.

The new proc_fops callback functions do *not* receive the capi_ctr pointer
as an argument. Instead, they must now retrieve it starting from their file
pointer argument, via PDE(file)->data which will contain a pointer to a
seq_file structure. The private field of that structure will then contain
the required capi_ctr pointer.

So it's not enough to just replace "pointer" by "pointers" here. The second
half of the paragraph needs to be adapted, too.

Thanks,
Tilman

-- 
Tilman Schmidt                    E-Mail: tilman@imap.cc
Bonn, Germany
Diese Nachricht besteht zu 100% aus wiederverwerteten Bits.
Ungeöffnet mindestens haltbar bis: (siehe Rückseite)


[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 259 bytes --]

^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [patch 1/2] proc_fops: convert drivers/isdn/ to seq_file
  2009-12-22  0:25 [patch 1/2] proc_fops: convert drivers/isdn/ to seq_file akpm
  2009-12-23 12:30 ` Tilman Schmidt
@ 2010-01-04  5:26 ` David Miller
  1 sibling, 0 replies; 13+ messages in thread
From: David Miller @ 2010-01-04  5:26 UTC (permalink / raw)
  To: akpm; +Cc: isdn, netdev, adobriyan, tilman

From: akpm@linux-foundation.org
Date: Mon, 21 Dec 2009 16:25:31 -0800

> From: Alexey Dobriyan <adobriyan@gmail.com>
> 
> Convert code away from ->read_proc/->write_proc interfaces.  Switch to
> proc_create()/proc_create_data() which make addition of proc entries
> reliable wrt NULL ->proc_fops, NULL ->data and so on.
> 
> Problem with ->read_proc et al is described here commit
> 786d7e1612f0b0adb6046f19b906609e4fe8b1ba "Fix rmmod/read/write races in
> /proc entries"
> 
> [akpm@linux-foundation.org: CONFIG_PROC_FS=n build fix]
> Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
> Cc: Karsten Keil <isdn@linux-pingi.de>
> Cc: Tilman Schmidt <tilman@imap.cc>
> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Tilman has requested some fixes to the documentation text.
So I'm waiting for a fixed up version.

^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [patch 1/2] proc_fops: convert drivers/isdn/ to seq_file
  2009-12-23 12:30 ` Tilman Schmidt
@ 2010-01-05 21:19   ` Alexey Dobriyan
  2010-01-10 18:42     ` Tilman Schmidt
  0 siblings, 1 reply; 13+ messages in thread
From: Alexey Dobriyan @ 2010-01-05 21:19 UTC (permalink / raw)
  To: Tilman Schmidt; +Cc: akpm, isdn, netdev

On Wed, Dec 23, 2009 at 01:30:25PM +0100, Tilman Schmidt wrote:
> > -read_proc_t *ctr_read_proc
> > -	pointer to the read_proc callback function for the device's proc file
> > +const struct file_operations *proc_fops
> > +	pointers to callback functions for the device's proc file
> >  	system entry, /proc/capi/controllers/<n>; will be called with a
> >  	pointer to the device's capi_ctr structure as the last (data) argument
> >  
> 
> As already noted in my mail dated 28.11.2009 13:26, the result of this is
> incorrect.
> 
> The new proc_fops callback functions do *not* receive the capi_ctr pointer
> as an argument. Instead, they must now retrieve it starting from their file
> pointer argument, via PDE(file)->data which will contain a pointer to a
> seq_file structure. The private field of that structure will then contain
> the required capi_ctr pointer.

Yes and no. Seqfile use is certainly encouraged, because it's simple,
but not mandated, as such, one can implement, say, ->read via different
code.

> So it's not enough to just replace "pointer" by "pointers" here. The second
> half of the paragraph needs to be adapted, too.

Here is hopefully last version and sorry for delay.


[PATCH] proc_fops: convert drivers/isdn/ to seq_file

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---

 Documentation/isdn/INTERFACE.CAPI       |    9 -
 drivers/isdn/capi/capi.c                |   99 +++++-----------
 drivers/isdn/capi/capidrv.c             |   55 ++------
 drivers/isdn/capi/kcapi.c               |    8 -
 drivers/isdn/gigaset/capi.c             |   75 +++++-------
 drivers/isdn/hardware/avm/avmcard.h     |    6 
 drivers/isdn/hardware/avm/b1.c          |   54 +++++---
 drivers/isdn/hardware/avm/b1dma.c       |   71 +++++------
 drivers/isdn/hardware/avm/b1isa.c       |    2 
 drivers/isdn/hardware/avm/b1pci.c       |    4 
 drivers/isdn/hardware/avm/b1pcmcia.c    |    2 
 drivers/isdn/hardware/avm/c4.c          |   53 +++++---
 drivers/isdn/hardware/avm/t1isa.c       |    2 
 drivers/isdn/hardware/avm/t1pci.c       |    2 
 drivers/isdn/hardware/eicon/capimain.c  |   40 +++---
 drivers/isdn/hardware/eicon/diva_didd.c |   45 +++----
 drivers/isdn/hardware/eicon/divasi.c    |   48 ++++---
 drivers/isdn/hardware/eicon/divasproc.c |  198 ++++++++++++++------------------
 drivers/isdn/hysdn/hycapi.c             |   56 ++++-----
 include/linux/isdn/capilli.h            |    3 
 net/bluetooth/cmtp/capi.c               |   37 +++--
 21 files changed, 411 insertions(+), 458 deletions(-)

--- a/Documentation/isdn/INTERFACE.CAPI
+++ b/Documentation/isdn/INTERFACE.CAPI
@@ -149,10 +149,11 @@ char *(*procinfo)(struct capi_ctr *ctrlr)
 	pointer to a callback function returning the entry for the device in
 	the CAPI controller info table, /proc/capi/controller
 
-read_proc_t *ctr_read_proc
-	pointer to the read_proc callback function for the device's proc file
-	system entry, /proc/capi/controllers/<n>; will be called with a
-	pointer to the device's capi_ctr structure as the last (data) argument
+const struct file_operations *proc_fops
+	pointers to callback functions for the device's proc file
+	system entry, /proc/capi/controllers/<n>; pointer to the device's
+	capi_ctr structure is available from struct proc_dir_entry::data
+	which is available from struct inode.
 
 Note: Callback functions except send_message() are never called in interrupt
 context.
--- a/drivers/isdn/capi/capi.c
+++ b/drivers/isdn/capi/capi.c
@@ -33,6 +33,7 @@
 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
 #include <linux/skbuff.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/poll.h>
 #include <linux/capi.h>
 #include <linux/kernelcapi.h>
@@ -1407,114 +1408,84 @@ static void capinc_tty_exit(void)
  * /proc/capi/capi20:
  *  minor applid nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt
  */
-static int proc_capidev_read_proc(char *page, char **start, off_t off,
-                                       int count, int *eof, void *data)
+static int capi20_proc_show(struct seq_file *m, void *v)
 {
         struct capidev *cdev;
 	struct list_head *l;
-	int len = 0;
 
 	read_lock(&capidev_list_lock);
 	list_for_each(l, &capidev_list) {
 		cdev = list_entry(l, struct capidev, list);
-		len += sprintf(page+len, "0 %d %lu %lu %lu %lu\n",
+		seq_printf(m, "0 %d %lu %lu %lu %lu\n",
 			cdev->ap.applid,
 			cdev->ap.nrecvctlpkt,
 			cdev->ap.nrecvdatapkt,
 			cdev->ap.nsentctlpkt,
 			cdev->ap.nsentdatapkt);
-		if (len <= off) {
-			off -= len;
-			len = 0;
-		} else {
-			if (len-off > count)
-				goto endloop;
-		}
 	}
-
-endloop:
 	read_unlock(&capidev_list_lock);
-	if (len < count)
-		*eof = 1;
-	if (len > count) len = count;
-	if (len < 0) len = 0;
-	return len;
+	return 0;
 }
 
+static int capi20_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, capi20_proc_show, NULL);
+}
+
+static const struct file_operations capi20_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= capi20_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 /*
  * /proc/capi/capi20ncci:
  *  applid ncci
  */
-static int proc_capincci_read_proc(char *page, char **start, off_t off,
-                                       int count, int *eof, void *data)
+static int capi20ncci_proc_show(struct seq_file *m, void *v)
 {
         struct capidev *cdev;
         struct capincci *np;
 	struct list_head *l;
-	int len = 0;
 
 	read_lock(&capidev_list_lock);
 	list_for_each(l, &capidev_list) {
 		cdev = list_entry(l, struct capidev, list);
 		for (np=cdev->nccis; np; np = np->next) {
-			len += sprintf(page+len, "%d 0x%x\n",
+			seq_printf(m, "%d 0x%x\n",
 				       cdev->ap.applid,
 				       np->ncci);
-			if (len <= off) {
-				off -= len;
-				len = 0;
-			} else {
-				if (len-off > count)
-					goto endloop;
-			}
 		}
 	}
-endloop:
 	read_unlock(&capidev_list_lock);
-	*start = page+off;
-	if (len < count)
-		*eof = 1;
-	if (len>count) len = count;
-	if (len<0) len = 0;
-	return len;
+	return 0;
 }
 
-static struct procfsentries {
-  char *name;
-  mode_t mode;
-  int (*read_proc)(char *page, char **start, off_t off,
-                                       int count, int *eof, void *data);
-  struct proc_dir_entry *procent;
-} procfsentries[] = {
-   /* { "capi",		  S_IFDIR, 0 }, */
-   { "capi/capi20", 	  0	 , proc_capidev_read_proc },
-   { "capi/capi20ncci",   0	 , proc_capincci_read_proc },
+static int capi20ncci_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, capi20ncci_proc_show, NULL);
+}
+
+static const struct file_operations capi20ncci_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= capi20ncci_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
 };
 
 static void __init proc_init(void)
 {
-    int nelem = ARRAY_SIZE(procfsentries);
-    int i;
-
-    for (i=0; i < nelem; i++) {
-        struct procfsentries *p = procfsentries + i;
-	p->procent = create_proc_entry(p->name, p->mode, NULL);
-	if (p->procent) p->procent->read_proc = p->read_proc;
-    }
+	proc_create("capi/capi20", 0, NULL, &capi20_proc_fops);
+	proc_create("capi/capi20ncci", 0, NULL, &capi20ncci_proc_fops);
 }
 
 static void __exit proc_exit(void)
 {
-    int nelem = ARRAY_SIZE(procfsentries);
-    int i;
-
-    for (i=nelem-1; i >= 0; i--) {
-        struct procfsentries *p = procfsentries + i;
-	if (p->procent) {
-	   remove_proc_entry(p->name, NULL);
-	   p->procent = NULL;
-	}
-    }
+	remove_proc_entry("capi/capi20", NULL);
+	remove_proc_entry("capi/capi20ncci", NULL);
 }
 
 /* -------- init function and module interface ---------------------- */
--- a/drivers/isdn/capi/capidrv.c
+++ b/drivers/isdn/capi/capidrv.c
@@ -24,6 +24,7 @@
 #include <linux/isdn.h>
 #include <linux/isdnif.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/capi.h>
 #include <linux/kernelcapi.h>
 #include <linux/ctype.h>
@@ -2229,59 +2230,37 @@ static void lower_callback(unsigned int cmd, u32 contr, void *data)
  * /proc/capi/capidrv:
  * nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt
  */
-static int proc_capidrv_read_proc(char *page, char **start, off_t off,
-                                       int count, int *eof, void *data)
+static int capidrv_proc_show(struct seq_file *m, void *v)
 {
-	int len = 0;
-
-	len += sprintf(page+len, "%lu %lu %lu %lu\n",
+	seq_printf(m, "%lu %lu %lu %lu\n",
 			global.ap.nrecvctlpkt,
 			global.ap.nrecvdatapkt,
 			global.ap.nsentctlpkt,
 			global.ap.nsentdatapkt);
-	if (off+count >= len)
-	   *eof = 1;
-	if (len < off)
-           return 0;
-	*start = page + off;
-	return ((count < len-off) ? count : len-off);
+	return 0;
+}
+
+static int capidrv_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, capidrv_proc_show, NULL);
 }
 
-static struct procfsentries {
-  char *name;
-  mode_t mode;
-  int (*read_proc)(char *page, char **start, off_t off,
-                                       int count, int *eof, void *data);
-  struct proc_dir_entry *procent;
-} procfsentries[] = {
-   /* { "capi",		  S_IFDIR, 0 }, */
-   { "capi/capidrv", 	  0	 , proc_capidrv_read_proc },
+static const struct file_operations capidrv_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= capidrv_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
 };
 
 static void __init proc_init(void)
 {
-    int nelem = ARRAY_SIZE(procfsentries);
-    int i;
-
-    for (i=0; i < nelem; i++) {
-        struct procfsentries *p = procfsentries + i;
-	p->procent = create_proc_entry(p->name, p->mode, NULL);
-	if (p->procent) p->procent->read_proc = p->read_proc;
-    }
+	proc_create("capi/capidrv", 0, NULL, &capidrv_proc_fops);
 }
 
 static void __exit proc_exit(void)
 {
-    int nelem = ARRAY_SIZE(procfsentries);
-    int i;
-
-    for (i=nelem-1; i >= 0; i--) {
-        struct procfsentries *p = procfsentries + i;
-	if (p->procent) {
-	   remove_proc_entry(p->name, NULL);
-	   p->procent = NULL;
-	}
-    }
+	remove_proc_entry("capi/capidrv", NULL);
 }
 
 static int __init capidrv_init(void)
--- a/drivers/isdn/capi/kcapi.c
+++ b/drivers/isdn/capi/kcapi.c
@@ -490,13 +490,7 @@ attach_capi_ctr(struct capi_ctr *card)
 	card->traceflag = showcapimsgs;
 
 	sprintf(card->procfn, "capi/controllers/%d", card->cnr);
-	card->procent = create_proc_entry(card->procfn, 0, NULL);
-	if (card->procent) {
-	   card->procent->read_proc = 
-		(int (*)(char *,char **,off_t,int,int *,void *))
-			card->ctr_read_proc;
-	   card->procent->data = card;
-	}
+	card->procent = proc_create_data(card->procfn, 0, NULL, card->proc_fops, card);
 
 	ncards++;
 	printk(KERN_NOTICE "kcapi: Controller [%03d]: %s attached\n",
--- a/drivers/isdn/gigaset/capi.c
+++ b/drivers/isdn/gigaset/capi.c
@@ -13,6 +13,8 @@
 
 #include "gigaset.h"
 #include <linux/ctype.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/isdn/capilli.h>
 #include <linux/isdn/capicmd.h>
 #include <linux/isdn/capiutil.h>
@@ -2106,35 +2108,22 @@ static char *gigaset_procinfo(struct capi_ctr *ctr)
 	return ctr->name;	/* ToDo: more? */
 }
 
-/**
- * gigaset_ctr_read_proc() - build controller proc file entry
- * @page:	buffer of PAGE_SIZE bytes for receiving the entry.
- * @start:	unused.
- * @off:	unused.
- * @count:	unused.
- * @eof:	unused.
- * @ctr:	controller descriptor structure.
- *
- * Return value: length of generated entry
- */
-static int gigaset_ctr_read_proc(char *page, char **start, off_t off,
-			  int count, int *eof, struct capi_ctr *ctr)
+static int gigaset_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctr = m->private;
 	struct cardstate *cs = ctr->driverdata;
 	char *s;
 	int i;
-	int len = 0;
-	len += sprintf(page+len, "%-16s %s\n", "name", ctr->name);
-	len += sprintf(page+len, "%-16s %s %s\n", "dev",
+
+	seq_printf(m, "%-16s %s\n", "name", ctr->name);
+	seq_printf(m, "%-16s %s %s\n", "dev",
 			dev_driver_string(cs->dev), dev_name(cs->dev));
-	len += sprintf(page+len, "%-16s %d\n", "id", cs->myid);
+	seq_printf(m, "%-16s %d\n", "id", cs->myid);
 	if (cs->gotfwver)
-		len += sprintf(page+len, "%-16s %d.%d.%d.%d\n", "firmware",
+		seq_printf(m, "%-16s %d.%d.%d.%d\n", "firmware",
 			cs->fwver[0], cs->fwver[1], cs->fwver[2], cs->fwver[3]);
-	len += sprintf(page+len, "%-16s %d\n", "channels",
-			cs->channels);
-	len += sprintf(page+len, "%-16s %s\n", "onechannel",
-			cs->onechannel ? "yes" : "no");
+	seq_printf(m, "%-16s %d\n", "channels", cs->channels);
+	seq_printf(m, "%-16s %s\n", "onechannel", cs->onechannel ? "yes" : "no");
 
 	switch (cs->mode) {
 	case M_UNKNOWN:
@@ -2152,7 +2141,7 @@ static int gigaset_ctr_read_proc(char *page, char **start, off_t off,
 	default:
 		s = "??";
 	}
-	len += sprintf(page+len, "%-16s %s\n", "mode", s);
+	seq_printf(m, "%-16s %s\n", "mode", s);
 
 	switch (cs->mstate) {
 	case MS_UNINITIALIZED:
@@ -2176,25 +2165,21 @@ static int gigaset_ctr_read_proc(char *page, char **start, off_t off,
 	default:
 		s = "??";
 	}
-	len += sprintf(page+len, "%-16s %s\n", "mstate", s);
+	seq_printf(m, "%-16s %s\n", "mstate", s);
 
-	len += sprintf(page+len, "%-16s %s\n", "running",
-			cs->running ? "yes" : "no");
-	len += sprintf(page+len, "%-16s %s\n", "connected",
-			cs->connected ? "yes" : "no");
-	len += sprintf(page+len, "%-16s %s\n", "isdn_up",
-			cs->isdn_up ? "yes" : "no");
-	len += sprintf(page+len, "%-16s %s\n", "cidmode",
-			cs->cidmode ? "yes" : "no");
+	seq_printf(m, "%-16s %s\n", "running", cs->running ? "yes" : "no");
+	seq_printf(m, "%-16s %s\n", "connected", cs->connected ? "yes" : "no");
+	seq_printf(m, "%-16s %s\n", "isdn_up", cs->isdn_up ? "yes" : "no");
+	seq_printf(m, "%-16s %s\n", "cidmode", cs->cidmode ? "yes" : "no");
 
 	for (i = 0; i < cs->channels; i++) {
-		len += sprintf(page+len, "[%d]%-13s %d\n", i, "corrupted",
+		seq_printf(m, "[%d]%-13s %d\n", i, "corrupted",
 				cs->bcs[i].corrupted);
-		len += sprintf(page+len, "[%d]%-13s %d\n", i, "trans_down",
+		seq_printf(m, "[%d]%-13s %d\n", i, "trans_down",
 				cs->bcs[i].trans_down);
-		len += sprintf(page+len, "[%d]%-13s %d\n", i, "trans_up",
+		seq_printf(m, "[%d]%-13s %d\n", i, "trans_up",
 				cs->bcs[i].trans_up);
-		len += sprintf(page+len, "[%d]%-13s %d\n", i, "chstate",
+		seq_printf(m, "[%d]%-13s %d\n", i, "chstate",
 				cs->bcs[i].chstate);
 		switch (cs->bcs[i].proto2) {
 		case L2_BITSYNC:
@@ -2209,11 +2194,23 @@ static int gigaset_ctr_read_proc(char *page, char **start, off_t off,
 		default:
 			s = "??";
 		}
-		len += sprintf(page+len, "[%d]%-13s %s\n", i, "proto2", s);
+		seq_printf(m, "[%d]%-13s %s\n", i, "proto2", s);
 	}
-	return len;
+	return 0;
 }
 
+static int gigaset_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, gigaset_proc_show, PDE(inode)->data);
+}
+
+static const struct file_operations gigaset_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= gigaset_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
 
 static struct capi_driver capi_driver_gigaset = {
 	.name		= "gigaset",
@@ -2256,7 +2253,7 @@ int gigaset_isdn_register(struct cardstate *cs, const char *isdnid)
 	iif->ctr.release_appl  = gigaset_release_appl;
 	iif->ctr.send_message  = gigaset_send_message;
 	iif->ctr.procinfo      = gigaset_procinfo;
-	iif->ctr.ctr_read_proc = gigaset_ctr_read_proc;
+	iif->ctr.proc_fops = &gigaset_proc_fops;
 	INIT_LIST_HEAD(&iif->appls);
 	skb_queue_head_init(&iif->sendqueue);
 	atomic_set(&iif->sendqlen, 0);
--- a/drivers/isdn/hardware/avm/avmcard.h
+++ b/drivers/isdn/hardware/avm/avmcard.h
@@ -556,8 +556,7 @@ u16  b1_send_message(struct capi_ctr *ctrl, struct sk_buff *skb);
 void b1_parse_version(avmctrl_info *card);
 irqreturn_t b1_interrupt(int interrupt, void *devptr);
 
-int b1ctl_read_proc(char *page, char **start, off_t off,
-        		int count, int *eof, struct capi_ctr *ctrl);
+extern const struct file_operations b1ctl_proc_fops;
 
 avmcard_dmainfo *avmcard_dma_alloc(char *name, struct pci_dev *,
 				   long rsize, long ssize);
@@ -577,7 +576,6 @@ void b1dma_register_appl(struct capi_ctr *ctrl,
 				capi_register_params *rp);
 void b1dma_release_appl(struct capi_ctr *ctrl, u16 appl);
 u16  b1dma_send_message(struct capi_ctr *ctrl, struct sk_buff *skb);
-int b1dmactl_read_proc(char *page, char **start, off_t off,
-        		int count, int *eof, struct capi_ctr *ctrl);
+extern const struct file_operations b1dmactl_proc_fops;
 
 #endif /* _AVMCARD_H_ */
--- a/drivers/isdn/hardware/avm/b1.c
+++ b/drivers/isdn/hardware/avm/b1.c
@@ -12,6 +12,8 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/skbuff.h>
 #include <linux/delay.h>
 #include <linux/mm.h>
@@ -634,18 +636,17 @@ irqreturn_t b1_interrupt(int interrupt, void *devptr)
 }
 
 /* ------------------------------------------------------------- */
-int b1ctl_read_proc(char *page, char **start, off_t off,
-        		int count, int *eof, struct capi_ctr *ctrl)
+static int b1ctl_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctrl = m->private;
 	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 	avmcard *card = cinfo->card;
 	u8 flag;
-	int len = 0;
 	char *s;
 
-	len += sprintf(page+len, "%-16s %s\n", "name", card->name);
-	len += sprintf(page+len, "%-16s 0x%x\n", "io", card->port);
-	len += sprintf(page+len, "%-16s %d\n", "irq", card->irq);
+	seq_printf(m, "%-16s %s\n", "name", card->name);
+	seq_printf(m, "%-16s 0x%x\n", "io", card->port);
+	seq_printf(m, "%-16s %d\n", "irq", card->irq);
 	switch (card->cardtype) {
 	case avm_b1isa: s = "B1 ISA"; break;
 	case avm_b1pci: s = "B1 PCI"; break;
@@ -658,20 +659,20 @@ int b1ctl_read_proc(char *page, char **start, off_t off,
 	case avm_c2: s = "C2"; break;
 	default: s = "???"; break;
 	}
-	len += sprintf(page+len, "%-16s %s\n", "type", s);
+	seq_printf(m, "%-16s %s\n", "type", s);
 	if (card->cardtype == avm_t1isa)
-	   len += sprintf(page+len, "%-16s %d\n", "cardnr", card->cardnr);
+		seq_printf(m, "%-16s %d\n", "cardnr", card->cardnr);
 	if ((s = cinfo->version[VER_DRIVER]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_driver", s);
+		seq_printf(m, "%-16s %s\n", "ver_driver", s);
 	if ((s = cinfo->version[VER_CARDTYPE]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s);
+		seq_printf(m, "%-16s %s\n", "ver_cardtype", s);
 	if ((s = cinfo->version[VER_SERIAL]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_serial", s);
+		seq_printf(m, "%-16s %s\n", "ver_serial", s);
 
 	if (card->cardtype != avm_m1) {
         	flag = ((u8 *)(ctrl->profile.manu))[3];
         	if (flag)
-			len += sprintf(page+len, "%-16s%s%s%s%s%s%s%s\n",
+			seq_printf(m, "%-16s%s%s%s%s%s%s%s\n",
 			"protocol",
 			(flag & 0x01) ? " DSS1" : "",
 			(flag & 0x02) ? " CT1" : "",
@@ -685,7 +686,7 @@ int b1ctl_read_proc(char *page, char **start, off_t off,
 	if (card->cardtype != avm_m1) {
         	flag = ((u8 *)(ctrl->profile.manu))[5];
 		if (flag)
-			len += sprintf(page+len, "%-16s%s%s%s%s\n",
+			seq_printf(m, "%-16s%s%s%s%s\n",
 			"linetype",
 			(flag & 0x01) ? " point to point" : "",
 			(flag & 0x02) ? " point to multipoint" : "",
@@ -693,16 +694,25 @@ int b1ctl_read_proc(char *page, char **start, off_t off,
 			(flag & 0x04) ? " leased line with D-channel" : ""
 			);
 	}
-	len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname);
-
-	if (off+count >= len)
-	   *eof = 1;
-	if (len < off)
-           return 0;
-	*start = page + off;
-	return ((count < len-off) ? count : len-off);
+	seq_printf(m, "%-16s %s\n", "cardname", cinfo->cardname);
+
+	return 0;
+}
+
+static int b1ctl_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, b1ctl_proc_show, PDE(inode)->data);
 }
 
+const struct file_operations b1ctl_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= b1ctl_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+EXPORT_SYMBOL(b1ctl_proc_fops);
+
 /* ------------------------------------------------------------- */
 
 #ifdef CONFIG_PCI
@@ -781,8 +791,6 @@ EXPORT_SYMBOL(b1_send_message);
 EXPORT_SYMBOL(b1_parse_version);
 EXPORT_SYMBOL(b1_interrupt);
 
-EXPORT_SYMBOL(b1ctl_read_proc);
-
 static int __init b1_init(void)
 {
 	char *p;
--- a/drivers/isdn/hardware/avm/b1dma.c
+++ b/drivers/isdn/hardware/avm/b1dma.c
@@ -11,6 +11,8 @@
 
 #include <linux/module.h>
 #include <linux/kernel.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/skbuff.h>
 #include <linux/delay.h>
 #include <linux/mm.h>
@@ -855,21 +857,20 @@ u16 b1dma_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
 
 /* ------------------------------------------------------------- */
 
-int b1dmactl_read_proc(char *page, char **start, off_t off,
-        		int count, int *eof, struct capi_ctr *ctrl)
+static int b1dmactl_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctrl = m->private;
 	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 	avmcard *card = cinfo->card;
 	u8 flag;
-	int len = 0;
 	char *s;
 	u32 txoff, txlen, rxoff, rxlen, csr;
 	unsigned long flags;
 
-	len += sprintf(page+len, "%-16s %s\n", "name", card->name);
-	len += sprintf(page+len, "%-16s 0x%x\n", "io", card->port);
-	len += sprintf(page+len, "%-16s %d\n", "irq", card->irq);
-	len += sprintf(page+len, "%-16s 0x%lx\n", "membase", card->membase);
+	seq_printf(m, "%-16s %s\n", "name", card->name);
+	seq_printf(m, "%-16s 0x%x\n", "io", card->port);
+	seq_printf(m, "%-16s %d\n", "irq", card->irq);
+	seq_printf(m, "%-16s 0x%lx\n", "membase", card->membase);
 	switch (card->cardtype) {
 	case avm_b1isa: s = "B1 ISA"; break;
 	case avm_b1pci: s = "B1 PCI"; break;
@@ -882,18 +883,18 @@ int b1dmactl_read_proc(char *page, char **start, off_t off,
 	case avm_c2: s = "C2"; break;
 	default: s = "???"; break;
 	}
-	len += sprintf(page+len, "%-16s %s\n", "type", s);
+	seq_printf(m, "%-16s %s\n", "type", s);
 	if ((s = cinfo->version[VER_DRIVER]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_driver", s);
+		seq_printf(m, "%-16s %s\n", "ver_driver", s);
 	if ((s = cinfo->version[VER_CARDTYPE]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s);
+		seq_printf(m, "%-16s %s\n", "ver_cardtype", s);
 	if ((s = cinfo->version[VER_SERIAL]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_serial", s);
+		seq_printf(m, "%-16s %s\n", "ver_serial", s);
 
 	if (card->cardtype != avm_m1) {
         	flag = ((u8 *)(ctrl->profile.manu))[3];
         	if (flag)
-			len += sprintf(page+len, "%-16s%s%s%s%s%s%s%s\n",
+			seq_printf(m, "%-16s%s%s%s%s%s%s%s\n",
 			"protocol",
 			(flag & 0x01) ? " DSS1" : "",
 			(flag & 0x02) ? " CT1" : "",
@@ -907,7 +908,7 @@ int b1dmactl_read_proc(char *page, char **start, off_t off,
 	if (card->cardtype != avm_m1) {
         	flag = ((u8 *)(ctrl->profile.manu))[5];
 		if (flag)
-			len += sprintf(page+len, "%-16s%s%s%s%s\n",
+			seq_printf(m, "%-16s%s%s%s%s\n",
 			"linetype",
 			(flag & 0x01) ? " point to point" : "",
 			(flag & 0x02) ? " point to multipoint" : "",
@@ -915,7 +916,7 @@ int b1dmactl_read_proc(char *page, char **start, off_t off,
 			(flag & 0x04) ? " leased line with D-channel" : ""
 			);
 	}
-	len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname);
+	seq_printf(m, "%-16s %s\n", "cardname", cinfo->cardname);
 
 
 	spin_lock_irqsave(&card->lock, flags);
@@ -930,27 +931,30 @@ int b1dmactl_read_proc(char *page, char **start, off_t off,
 
 	spin_unlock_irqrestore(&card->lock, flags);
 
-        len += sprintf(page+len, "%-16s 0x%lx\n",
-				"csr (cached)", (unsigned long)card->csr);
-        len += sprintf(page+len, "%-16s 0x%lx\n",
-				"csr", (unsigned long)csr);
-        len += sprintf(page+len, "%-16s %lu\n",
-				"txoff", (unsigned long)txoff);
-        len += sprintf(page+len, "%-16s %lu\n",
-				"txlen", (unsigned long)txlen);
-        len += sprintf(page+len, "%-16s %lu\n",
-				"rxoff", (unsigned long)rxoff);
-        len += sprintf(page+len, "%-16s %lu\n",
-				"rxlen", (unsigned long)rxlen);
-
-	if (off+count >= len)
-	   *eof = 1;
-	if (len < off)
-           return 0;
-	*start = page + off;
-	return ((count < len-off) ? count : len-off);
+	seq_printf(m, "%-16s 0x%lx\n", "csr (cached)", (unsigned long)card->csr);
+	seq_printf(m, "%-16s 0x%lx\n", "csr", (unsigned long)csr);
+	seq_printf(m, "%-16s %lu\n", "txoff", (unsigned long)txoff);
+	seq_printf(m, "%-16s %lu\n", "txlen", (unsigned long)txlen);
+	seq_printf(m, "%-16s %lu\n", "rxoff", (unsigned long)rxoff);
+	seq_printf(m, "%-16s %lu\n", "rxlen", (unsigned long)rxlen);
+
+	return 0;
+}
+
+static int b1dmactl_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, b1dmactl_proc_show, PDE(inode)->data);
 }
 
+const struct file_operations b1dmactl_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= b1dmactl_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+EXPORT_SYMBOL(b1dmactl_proc_fops);
+
 /* ------------------------------------------------------------- */
 
 EXPORT_SYMBOL(b1dma_reset);
@@ -963,7 +967,6 @@ EXPORT_SYMBOL(b1dma_reset_ctr);
 EXPORT_SYMBOL(b1dma_register_appl);
 EXPORT_SYMBOL(b1dma_release_appl);
 EXPORT_SYMBOL(b1dma_send_message);
-EXPORT_SYMBOL(b1dmactl_read_proc);
 
 static int __init b1dma_init(void)
 {
--- a/drivers/isdn/hardware/avm/b1isa.c
+++ b/drivers/isdn/hardware/avm/b1isa.c
@@ -121,7 +121,7 @@ static int b1isa_probe(struct pci_dev *pdev)
 	cinfo->capi_ctrl.load_firmware = b1_load_firmware;
 	cinfo->capi_ctrl.reset_ctr     = b1_reset_ctr;
 	cinfo->capi_ctrl.procinfo      = b1isa_procinfo;
-	cinfo->capi_ctrl.ctr_read_proc = b1ctl_read_proc;
+	cinfo->capi_ctrl.proc_fops = &b1ctl_proc_fops;
 	strcpy(cinfo->capi_ctrl.name, card->name);
 
 	retval = attach_capi_ctr(&cinfo->capi_ctrl);
--- a/drivers/isdn/hardware/avm/b1pci.c
+++ b/drivers/isdn/hardware/avm/b1pci.c
@@ -112,7 +112,7 @@ static int b1pci_probe(struct capicardparams *p, struct pci_dev *pdev)
 	cinfo->capi_ctrl.load_firmware = b1_load_firmware;
 	cinfo->capi_ctrl.reset_ctr     = b1_reset_ctr;
 	cinfo->capi_ctrl.procinfo      = b1pci_procinfo;
-	cinfo->capi_ctrl.ctr_read_proc = b1ctl_read_proc;
+	cinfo->capi_ctrl.proc_fops = &b1ctl_proc_fops;
 	strcpy(cinfo->capi_ctrl.name, card->name);
 	cinfo->capi_ctrl.owner         = THIS_MODULE;
 
@@ -251,7 +251,7 @@ static int b1pciv4_probe(struct capicardparams *p, struct pci_dev *pdev)
 	cinfo->capi_ctrl.load_firmware = b1dma_load_firmware;
 	cinfo->capi_ctrl.reset_ctr     = b1dma_reset_ctr;
 	cinfo->capi_ctrl.procinfo      = b1pciv4_procinfo;
-	cinfo->capi_ctrl.ctr_read_proc = b1dmactl_read_proc;
+	cinfo->capi_ctrl.proc_fops = &b1dmactl_proc_fops;
 	strcpy(cinfo->capi_ctrl.name, card->name);
 
 	retval = attach_capi_ctr(&cinfo->capi_ctrl);
--- a/drivers/isdn/hardware/avm/b1pcmcia.c
+++ b/drivers/isdn/hardware/avm/b1pcmcia.c
@@ -108,7 +108,7 @@ static int b1pcmcia_add_card(unsigned int port, unsigned irq,
 	cinfo->capi_ctrl.load_firmware = b1_load_firmware;
 	cinfo->capi_ctrl.reset_ctr     = b1_reset_ctr;
 	cinfo->capi_ctrl.procinfo      = b1pcmcia_procinfo;
-	cinfo->capi_ctrl.ctr_read_proc = b1ctl_read_proc;
+	cinfo->capi_ctrl.proc_fops = &b1ctl_proc_fops;
 	strcpy(cinfo->capi_ctrl.name, card->name);
 
 	retval = attach_capi_ctr(&cinfo->capi_ctrl);
--- a/drivers/isdn/hardware/avm/c4.c
+++ b/drivers/isdn/hardware/avm/c4.c
@@ -11,6 +11,8 @@
 
 #include <linux/module.h>
 #include <linux/kernel.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/skbuff.h>
 #include <linux/delay.h>
 #include <linux/mm.h>
@@ -1062,19 +1064,18 @@ static char *c4_procinfo(struct capi_ctr *ctrl)
 	return cinfo->infobuf;
 }
 
-static int c4_read_proc(char *page, char **start, off_t off,
-        		int count, int *eof, struct capi_ctr *ctrl)
+static int c4_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctrl = m->private;
 	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 	avmcard *card = cinfo->card;
 	u8 flag;
-	int len = 0;
 	char *s;
 
-	len += sprintf(page+len, "%-16s %s\n", "name", card->name);
-	len += sprintf(page+len, "%-16s 0x%x\n", "io", card->port);
-	len += sprintf(page+len, "%-16s %d\n", "irq", card->irq);
-	len += sprintf(page+len, "%-16s 0x%lx\n", "membase", card->membase);
+	seq_printf(m, "%-16s %s\n", "name", card->name);
+	seq_printf(m, "%-16s 0x%x\n", "io", card->port);
+	seq_printf(m, "%-16s %d\n", "irq", card->irq);
+	seq_printf(m, "%-16s 0x%lx\n", "membase", card->membase);
 	switch (card->cardtype) {
 	case avm_b1isa: s = "B1 ISA"; break;
 	case avm_b1pci: s = "B1 PCI"; break;
@@ -1087,18 +1088,18 @@ static int c4_read_proc(char *page, char **start, off_t off,
 	case avm_c2: s = "C2"; break;
 	default: s = "???"; break;
 	}
-	len += sprintf(page+len, "%-16s %s\n", "type", s);
+	seq_printf(m, "%-16s %s\n", "type", s);
 	if ((s = cinfo->version[VER_DRIVER]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_driver", s);
+		seq_printf(m, "%-16s %s\n", "ver_driver", s);
 	if ((s = cinfo->version[VER_CARDTYPE]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s);
+		seq_printf(m, "%-16s %s\n", "ver_cardtype", s);
 	if ((s = cinfo->version[VER_SERIAL]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_serial", s);
+		seq_printf(m, "%-16s %s\n", "ver_serial", s);
 
 	if (card->cardtype != avm_m1) {
         	flag = ((u8 *)(ctrl->profile.manu))[3];
         	if (flag)
-			len += sprintf(page+len, "%-16s%s%s%s%s%s%s%s\n",
+			seq_printf(m, "%-16s%s%s%s%s%s%s%s\n",
 			"protocol",
 			(flag & 0x01) ? " DSS1" : "",
 			(flag & 0x02) ? " CT1" : "",
@@ -1112,7 +1113,7 @@ static int c4_read_proc(char *page, char **start, off_t off,
 	if (card->cardtype != avm_m1) {
         	flag = ((u8 *)(ctrl->profile.manu))[5];
 		if (flag)
-			len += sprintf(page+len, "%-16s%s%s%s%s\n",
+			seq_printf(m, "%-16s%s%s%s%s\n",
 			"linetype",
 			(flag & 0x01) ? " point to point" : "",
 			(flag & 0x02) ? " point to multipoint" : "",
@@ -1120,16 +1121,24 @@ static int c4_read_proc(char *page, char **start, off_t off,
 			(flag & 0x04) ? " leased line with D-channel" : ""
 			);
 	}
-	len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname);
-
-	if (off+count >= len)
-	   *eof = 1;
-	if (len < off)
-           return 0;
-	*start = page + off;
-	return ((count < len-off) ? count : len-off);
+	seq_printf(m, "%-16s %s\n", "cardname", cinfo->cardname);
+
+	return 0;
 }
 
+static int c4_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, c4_proc_show, PDE(inode)->data);
+}
+
+static const struct file_operations c4_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= c4_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 /* ------------------------------------------------------------- */
 
 static int c4_add_card(struct capicardparams *p, struct pci_dev *dev,
@@ -1201,7 +1210,7 @@ static int c4_add_card(struct capicardparams *p, struct pci_dev *dev,
 		cinfo->capi_ctrl.load_firmware = c4_load_firmware;
 		cinfo->capi_ctrl.reset_ctr     = c4_reset_ctr;
 		cinfo->capi_ctrl.procinfo      = c4_procinfo;
-		cinfo->capi_ctrl.ctr_read_proc = c4_read_proc;
+		cinfo->capi_ctrl.proc_fops = &c4_proc_fops;
 		strcpy(cinfo->capi_ctrl.name, card->name);
 
 		retval = attach_capi_ctr(&cinfo->capi_ctrl);
--- a/drivers/isdn/hardware/avm/t1isa.c
+++ b/drivers/isdn/hardware/avm/t1isa.c
@@ -429,7 +429,7 @@ static int t1isa_probe(struct pci_dev *pdev, int cardnr)
 	cinfo->capi_ctrl.load_firmware = t1isa_load_firmware;
 	cinfo->capi_ctrl.reset_ctr     = t1isa_reset_ctr;
 	cinfo->capi_ctrl.procinfo      = t1isa_procinfo;
-	cinfo->capi_ctrl.ctr_read_proc = b1ctl_read_proc;
+	cinfo->capi_ctrl.proc_fops = &b1ctl_proc_fops;
 	strcpy(cinfo->capi_ctrl.name, card->name);
 
 	retval = attach_capi_ctr(&cinfo->capi_ctrl);
--- a/drivers/isdn/hardware/avm/t1pci.c
+++ b/drivers/isdn/hardware/avm/t1pci.c
@@ -119,7 +119,7 @@ static int t1pci_add_card(struct capicardparams *p, struct pci_dev *pdev)
 	cinfo->capi_ctrl.load_firmware = b1dma_load_firmware;
 	cinfo->capi_ctrl.reset_ctr     = b1dma_reset_ctr;
 	cinfo->capi_ctrl.procinfo      = t1pci_procinfo;
-	cinfo->capi_ctrl.ctr_read_proc = b1dmactl_read_proc;
+	cinfo->capi_ctrl.proc_fops = &b1dmactl_proc_fops;
 	strcpy(cinfo->capi_ctrl.name, card->name);
 
 	retval = attach_capi_ctr(&cinfo->capi_ctrl);
--- a/drivers/isdn/hardware/eicon/capimain.c
+++ b/drivers/isdn/hardware/eicon/capimain.c
@@ -13,6 +13,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <asm/uaccess.h>
+#include <linux/seq_file.h>
 #include <linux/skbuff.h>
 
 #include "os_capi.h"
@@ -75,25 +76,32 @@ void diva_os_free_message_buffer(diva_os_message_buffer_s * dmb)
 /*
  * proc function for controller info
  */
-static int diva_ctl_read_proc(char *page, char **start, off_t off,
-			      int count, int *eof, struct capi_ctr *ctrl)
+static int diva_ctl_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctrl = m->private;
 	diva_card *card = (diva_card *) ctrl->driverdata;
-	int len = 0;
-
-	len += sprintf(page + len, "%s\n", ctrl->name);
-	len += sprintf(page + len, "Serial No. : %s\n", ctrl->serial);
-	len += sprintf(page + len, "Id         : %d\n", card->Id);
-	len += sprintf(page + len, "Channels   : %d\n", card->d.channels);
-
-	if (off + count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len - off) ? count : len - off);
+
+	seq_printf(m, "%s\n", ctrl->name);
+	seq_printf(m, "Serial No. : %s\n", ctrl->serial);
+	seq_printf(m, "Id         : %d\n", card->Id);
+	seq_printf(m, "Channels   : %d\n", card->d.channels);
+
+	return 0;
+}
+
+static int diva_ctl_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, diva_ctl_proc_show, NULL);
 }
 
+static const struct file_operations diva_ctl_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= diva_ctl_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 /*
  * set additional os settings in capi_ctr struct
  */
@@ -102,7 +110,7 @@ void diva_os_set_controller_struct(struct capi_ctr *ctrl)
 	ctrl->driver_name = DRIVERLNAME;
 	ctrl->load_firmware = NULL;
 	ctrl->reset_ctr = NULL;
-	ctrl->ctr_read_proc = diva_ctl_read_proc;
+	ctrl->proc_fops = &diva_ctl_proc_fops;
 	ctrl->owner = THIS_MODULE;
 }
 
--- a/drivers/isdn/hardware/eicon/diva_didd.c
+++ b/drivers/isdn/hardware/eicon/diva_didd.c
@@ -15,6 +15,7 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <net/net_namespace.h>
 
 #include "platform.h"
@@ -62,39 +63,41 @@ static char *getrev(const char *revision)
 	return rev;
 }
 
-static int
-proc_read(char *page, char **start, off_t off, int count, int *eof,
-	  void *data)
+static int divadidd_proc_show(struct seq_file *m, void *v)
 {
-	int len = 0;
 	char tmprev[32];
 
 	strcpy(tmprev, main_revision);
-	len += sprintf(page + len, "%s\n", DRIVERNAME);
-	len += sprintf(page + len, "name     : %s\n", DRIVERLNAME);
-	len += sprintf(page + len, "release  : %s\n", DRIVERRELEASE_DIDD);
-	len += sprintf(page + len, "build    : %s(%s)\n",
+	seq_printf(m, "%s\n", DRIVERNAME);
+	seq_printf(m, "name     : %s\n", DRIVERLNAME);
+	seq_printf(m, "release  : %s\n", DRIVERRELEASE_DIDD);
+	seq_printf(m, "build    : %s(%s)\n",
 		       diva_didd_common_code_build, DIVA_BUILD);
-	len += sprintf(page + len, "revision : %s\n", getrev(tmprev));
-
-	if (off + count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len - off) ? count : len - off);
+	seq_printf(m, "revision : %s\n", getrev(tmprev));
+
+	return 0;
 }
 
+static int divadidd_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, divadidd_proc_show, NULL);
+}
+
+static const struct file_operations divadidd_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= divadidd_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 static int DIVA_INIT_FUNCTION create_proc(void)
 {
 	proc_net_eicon = proc_mkdir("eicon", init_net.proc_net);
 
 	if (proc_net_eicon) {
-		if ((proc_didd =
-		     create_proc_entry(DRIVERLNAME, S_IFREG | S_IRUGO,
-				       proc_net_eicon))) {
-			proc_didd->read_proc = proc_read;
-		}
+		proc_didd = proc_create(DRIVERLNAME, S_IRUGO, proc_net_eicon,
+					&divadidd_proc_fops);
 		return (1);
 	}
 	return (0);
--- a/drivers/isdn/hardware/eicon/divasi.c
+++ b/drivers/isdn/hardware/eicon/divasi.c
@@ -17,6 +17,7 @@
 #include <linux/poll.h>
 #include <linux/proc_fs.h>
 #include <linux/skbuff.h>
+#include <linux/seq_file.h>
 #include <linux/smp_lock.h>
 #include <asm/uaccess.h>
 
@@ -86,39 +87,40 @@ static void diva_um_timer_function(unsigned long data);
 extern struct proc_dir_entry *proc_net_eicon;
 static struct proc_dir_entry *um_idi_proc_entry = NULL;
 
-static int
-um_idi_proc_read(char *page, char **start, off_t off, int count, int *eof,
-		 void *data)
+static int um_idi_proc_show(struct seq_file *m, void *v)
 {
-	int len = 0;
 	char tmprev[32];
 
-	len += sprintf(page + len, "%s\n", DRIVERNAME);
-	len += sprintf(page + len, "name     : %s\n", DRIVERLNAME);
-	len += sprintf(page + len, "release  : %s\n", DRIVERRELEASE_IDI);
+	seq_printf(m, "%s\n", DRIVERNAME);
+	seq_printf(m, "name     : %s\n", DRIVERLNAME);
+	seq_printf(m, "release  : %s\n", DRIVERRELEASE_IDI);
 	strcpy(tmprev, main_revision);
-	len += sprintf(page + len, "revision : %s\n", getrev(tmprev));
-	len += sprintf(page + len, "build    : %s\n", DIVA_BUILD);
-	len += sprintf(page + len, "major    : %d\n", major);
-
-	if (off + count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len - off) ? count : len - off);
+	seq_printf(m, "revision : %s\n", getrev(tmprev));
+	seq_printf(m, "build    : %s\n", DIVA_BUILD);
+	seq_printf(m, "major    : %d\n", major);
+
+	return 0;
+}
+
+static int um_idi_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, um_idi_proc_show, NULL);
 }
 
+static const struct file_operations um_idi_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= um_idi_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 static int DIVA_INIT_FUNCTION create_um_idi_proc(void)
 {
-	um_idi_proc_entry = create_proc_entry(DRIVERLNAME,
-					      S_IFREG | S_IRUGO | S_IWUSR,
-					      proc_net_eicon);
+	um_idi_proc_entry = proc_create(DRIVERLNAME, S_IRUGO, proc_net_eicon,
+					&um_idi_proc_fops);
 	if (!um_idi_proc_entry)
 		return (0);
-
-	um_idi_proc_entry->read_proc = um_idi_proc_read;
-
 	return (1);
 }
 
--- a/drivers/isdn/hardware/eicon/divasproc.c
+++ b/drivers/isdn/hardware/eicon/divasproc.c
@@ -14,6 +14,7 @@
 #include <linux/kernel.h>
 #include <linux/poll.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/list.h>
 #include <asm/uaccess.h>
 
@@ -141,14 +142,10 @@ void remove_divas_proc(void)
 	}
 }
 
-/*
-** write group_optimization 
-*/
-static int
-write_grp_opt(struct file *file, const char __user *buffer, unsigned long count,
-	      void *data)
+static ssize_t grp_opt_proc_write(struct file *file, const char __user *buffer,
+				  size_t count, loff_t *pos)
 {
-	diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) data;
+	diva_os_xdi_adapter_t *a = PDE(file->f_path.dentry->d_inode)->data;
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 
 	if ((count == 1) || (count == 2)) {
@@ -172,14 +169,10 @@ write_grp_opt(struct file *file, const char __user *buffer, unsigned long count,
 	return (-EINVAL);
 }
 
-/*
-** write dynamic_l1_down
-*/
-static int
-write_d_l1_down(struct file *file, const char __user *buffer, unsigned long count,
-		void *data)
+static ssize_t d_l1_down_proc_write(struct file *file, const char __user *buffer,
+				    size_t count, loff_t *pos)
 {
-	diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) data;
+	diva_os_xdi_adapter_t *a = PDE(file->f_path.dentry->d_inode)->data;
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 
 	if ((count == 1) || (count == 2)) {
@@ -203,63 +196,62 @@ write_d_l1_down(struct file *file, const char __user *buffer, unsigned long coun
 	return (-EINVAL);
 }
 
-
-/*
-** read dynamic_l1_down 
-*/
-static int
-read_d_l1_down(char *page, char **start, off_t off, int count, int *eof,
-	       void *data)
+static int d_l1_down_proc_show(struct seq_file *m, void *v)
 {
-	int len = 0;
-	diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) data;
+	diva_os_xdi_adapter_t *a = m->private;
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 
-	len += sprintf(page + len, "%s\n",
+	seq_printf(m, "%s\n",
 		       (IoAdapter->capi_cfg.
 			cfg_1 & DIVA_XDI_CAPI_CFG_1_DYNAMIC_L1_ON) ? "1" :
 		       "0");
+	return 0;
+}
 
-	if (off + count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len - off) ? count : len - off);
+static int d_l1_down_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, d_l1_down_proc_show, PDE(inode)->data);
 }
 
-/*
-** read group_optimization
-*/
-static int
-read_grp_opt(char *page, char **start, off_t off, int count, int *eof,
-	     void *data)
+static const struct file_operations d_l1_down_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= d_l1_down_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+	.write		= d_l1_down_proc_write,
+};
+
+static int grp_opt_proc_show(struct seq_file *m, void *v)
 {
-	int len = 0;
-	diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) data;
+	diva_os_xdi_adapter_t *a = m->private;
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 
-	len += sprintf(page + len, "%s\n",
+	seq_printf(m, "%s\n",
 		       (IoAdapter->capi_cfg.
 			cfg_1 & DIVA_XDI_CAPI_CFG_1_GROUP_POPTIMIZATION_ON)
 		       ? "1" : "0");
+	return 0;
+}
 
-	if (off + count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len - off) ? count : len - off);
+static int grp_opt_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, grp_opt_proc_show, PDE(inode)->data);
 }
 
-/*
-** info write
-*/
-static int
-info_write(struct file *file, const char __user *buffer, unsigned long count,
-	   void *data)
+static const struct file_operations grp_opt_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= grp_opt_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+	.write		= grp_opt_proc_write,
+};
+
+static ssize_t info_proc_write(struct file *file, const char __user *buffer,
+			       size_t count, loff_t *pos)
 {
-	diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) data;
+	diva_os_xdi_adapter_t *a = PDE(file->f_path.dentry->d_inode)->data;
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 	char c[4];
 
@@ -277,63 +269,46 @@ info_write(struct file *file, const char __user *buffer, unsigned long count,
 	return (-EINVAL);
 }
 
-/*
-** info read
-*/
-static int
-info_read(char *page, char **start, off_t off, int count, int *eof,
-	  void *data)
+static int info_proc_show(struct seq_file *m, void *v)
 {
 	int i = 0;
-	int len = 0;
 	char *p;
 	char tmpser[16];
-	diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) data;
+	diva_os_xdi_adapter_t *a = m->private;
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 
-	len +=
-	    sprintf(page + len, "Name        : %s\n",
-		    IoAdapter->Properties.Name);
-	len += sprintf(page + len, "DSP state   : %08x\n", a->dsp_mask);
-	len += sprintf(page + len, "Channels    : %02d\n",
-		       IoAdapter->Properties.Channels);
-	len += sprintf(page + len, "E. max/used : %03d/%03d\n",
+	seq_printf(m, "Name        : %s\n", IoAdapter->Properties.Name);
+	seq_printf(m, "DSP state   : %08x\n", a->dsp_mask);
+	seq_printf(m, "Channels    : %02d\n", IoAdapter->Properties.Channels);
+	seq_printf(m, "E. max/used : %03d/%03d\n",
 		       IoAdapter->e_max, IoAdapter->e_count);
 	diva_get_vserial_number(IoAdapter, tmpser);
-	len += sprintf(page + len, "Serial      : %s\n", tmpser);
-	len +=
-	    sprintf(page + len, "IRQ         : %d\n",
-		    IoAdapter->irq_info.irq_nr);
-	len += sprintf(page + len, "CardIndex   : %d\n", a->CardIndex);
-	len += sprintf(page + len, "CardOrdinal : %d\n", a->CardOrdinal);
-	len += sprintf(page + len, "Controller  : %d\n", a->controller);
-	len += sprintf(page + len, "Bus-Type    : %s\n",
+	seq_printf(m, "Serial      : %s\n", tmpser);
+	seq_printf(m, "IRQ         : %d\n", IoAdapter->irq_info.irq_nr);
+	seq_printf(m, "CardIndex   : %d\n", a->CardIndex);
+	seq_printf(m, "CardOrdinal : %d\n", a->CardOrdinal);
+	seq_printf(m, "Controller  : %d\n", a->controller);
+	seq_printf(m, "Bus-Type    : %s\n",
 		       (a->Bus ==
 			DIVAS_XDI_ADAPTER_BUS_ISA) ? "ISA" : "PCI");
-	len += sprintf(page + len, "Port-Name   : %s\n", a->port_name);
+	seq_printf(m, "Port-Name   : %s\n", a->port_name);
 	if (a->Bus == DIVAS_XDI_ADAPTER_BUS_PCI) {
-		len +=
-		    sprintf(page + len, "PCI-bus     : %d\n",
-			    a->resources.pci.bus);
-		len +=
-		    sprintf(page + len, "PCI-func    : %d\n",
-			    a->resources.pci.func);
+		seq_printf(m, "PCI-bus     : %d\n", a->resources.pci.bus);
+		seq_printf(m, "PCI-func    : %d\n", a->resources.pci.func);
 		for (i = 0; i < 8; i++) {
 			if (a->resources.pci.bar[i]) {
-				len +=
-				    sprintf(page + len,
+				seq_printf(m,
 					    "Mem / I/O %d : 0x%x / mapped : 0x%lx",
 					    i, a->resources.pci.bar[i],
 					    (unsigned long) a->resources.
 					    pci.addr[i]);
 				if (a->resources.pci.length[i]) {
-					len +=
-					    sprintf(page + len,
+					seq_printf(m,
 						    " / length : %d",
 						    a->resources.pci.
 						    length[i]);
 				}
-				len += sprintf(page + len, "\n");
+				seq_putc(m, '\n');
 			}
 		}
 	}
@@ -353,16 +328,25 @@ info_read(char *page, char **start, off_t off, int count, int *eof,
 	} else {
 		p = "ready";
 	}
-	len += sprintf(page + len, "State       : %s\n", p);
+	seq_printf(m, "State       : %s\n", p);
 
-	if (off + count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len - off) ? count : len - off);
+	return 0;
+}
+
+static int info_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, info_proc_show, PDE(inode)->data);
 }
 
+static const struct file_operations info_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= info_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+	.write		= info_proc_write,
+};
+
 /*
 ** adapter proc init/de-init
 */
@@ -380,28 +364,20 @@ int create_adapter_proc(diva_os_xdi_adapter_t * a)
 		return (0);
 	a->proc_adapter_dir = (void *) de;
 
-	if (!(pe =
-	     create_proc_entry(info_proc_name, S_IFREG | S_IRUGO | S_IWUSR, de)))
+	pe = proc_create_data(info_proc_name, S_IRUGO | S_IWUSR, de,
+			      &info_proc_fops, a);
+	if (!pe)
 		return (0);
 	a->proc_info = (void *) pe;
-	pe->write_proc = info_write;
-	pe->read_proc = info_read;
-	pe->data = a;
 
-	if ((pe = create_proc_entry(grp_opt_proc_name,
-			       S_IFREG | S_IRUGO | S_IWUSR, de))) {
+	pe = proc_create_data(grp_opt_proc_name, S_IRUGO | S_IWUSR, de,
+			      &grp_opt_proc_fops, a);
+	if (pe)
 		a->proc_grp_opt = (void *) pe;
-		pe->write_proc = write_grp_opt;
-		pe->read_proc = read_grp_opt;
-		pe->data = a;
-	}
-	if ((pe = create_proc_entry(d_l1_down_proc_name,
-			       S_IFREG | S_IRUGO | S_IWUSR, de))) {
+	pe = proc_create_data(d_l1_down_proc_name, S_IRUGO | S_IWUSR, de,
+			      &d_l1_down_proc_fops, a);
+	if (pe)
 		a->proc_d_l1_down = (void *) pe;
-		pe->write_proc = write_d_l1_down;
-		pe->read_proc = read_d_l1_down;
-		pe->data = a;
-	}
 
 	DBG_TRC(("proc entry %s created", tmp));
 
--- a/drivers/isdn/hysdn/hycapi.c
+++ b/drivers/isdn/hysdn/hycapi.c
@@ -11,6 +11,8 @@
  */
 
 #include <linux/module.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/signal.h>
 #include <linux/kernel.h>
 #include <linux/skbuff.h>
@@ -432,26 +434,16 @@ static u16 hycapi_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
 	return retval;
 }
 
-/*********************************************************************
-hycapi_read_proc
-
-Informations provided in the /proc/capi-entries.
-
-*********************************************************************/
-
-static int hycapi_read_proc(char *page, char **start, off_t off,
-			    int count, int *eof, struct capi_ctr *ctrl)
+static int hycapi_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctrl = m->private;
 	hycapictrl_info *cinfo = (hycapictrl_info *)(ctrl->driverdata);
 	hysdn_card *card = cinfo->card;
-	int len = 0;
 	char *s;
-#ifdef HYCAPI_PRINTFNAMES
-	printk(KERN_NOTICE "hycapi_read_proc\n");    
-#endif
-	len += sprintf(page+len, "%-16s %s\n", "name", cinfo->cardname);
-	len += sprintf(page+len, "%-16s 0x%x\n", "io", card->iobase);
-	len += sprintf(page+len, "%-16s %d\n", "irq", card->irq);
+
+	seq_printf(m, "%-16s %s\n", "name", cinfo->cardname);
+	seq_printf(m, "%-16s 0x%x\n", "io", card->iobase);
+	seq_printf(m, "%-16s %d\n", "irq", card->irq);
     
 	switch (card->brdtype) {
 		case BD_PCCARD:  s = "HYSDN Hycard"; break;
@@ -461,24 +453,32 @@ static int hycapi_read_proc(char *page, char **start, off_t off,
 		case BD_PLEXUS: s = "HYSDN Plexus30"; break;
 		default: s = "???"; break;
 	}
-	len += sprintf(page+len, "%-16s %s\n", "type", s);
+	seq_printf(m, "%-16s %s\n", "type", s);
 	if ((s = cinfo->version[VER_DRIVER]) != NULL)
-		len += sprintf(page+len, "%-16s %s\n", "ver_driver", s);
+		seq_printf(m, "%-16s %s\n", "ver_driver", s);
 	if ((s = cinfo->version[VER_CARDTYPE]) != NULL)
-		len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s);
+		seq_printf(m, "%-16s %s\n", "ver_cardtype", s);
 	if ((s = cinfo->version[VER_SERIAL]) != NULL)
-		len += sprintf(page+len, "%-16s %s\n", "ver_serial", s);
+		seq_printf(m, "%-16s %s\n", "ver_serial", s);
     
-	len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname);
+	seq_printf(m, "%-16s %s\n", "cardname", cinfo->cardname);
     
-	if (off+count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len-off) ? count : len-off);
+	return 0;
+}
+
+static int hycapi_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, hycapi_proc_show, PDE(inode)->data);
 }
 
+static const struct file_operations hycapi_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= hycapi_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 /**************************************************************
 hycapi_load_firmware
 
@@ -774,7 +774,7 @@ hycapi_capi_create(hysdn_card *card)
 		ctrl->load_firmware = hycapi_load_firmware;
 		ctrl->reset_ctr     = hycapi_reset_ctr;
 		ctrl->procinfo      = hycapi_procinfo;
-		ctrl->ctr_read_proc = hycapi_read_proc;
+		ctrl->proc_fops = &hycapi_proc_fops;
 		strcpy(ctrl->name, cinfo->cardname);
 		ctrl->owner = THIS_MODULE;
 
--- a/include/linux/isdn/capilli.h
+++ b/include/linux/isdn/capilli.h
@@ -50,8 +50,7 @@ struct capi_ctr {
 	u16  (*send_message)(struct capi_ctr *, struct sk_buff *skb);
 	
 	char *(*procinfo)(struct capi_ctr *);
-	int (*ctr_read_proc)(char *page, char **start, off_t off,
-			     int count, int *eof, struct capi_ctr *card);
+	const struct file_operations *proc_fops;
 
 	/* filled in before calling ready callback */
 	u8 manu[CAPI_MANUFACTURER_LEN];		/* CAPI_GET_MANUFACTURER */
--- a/net/bluetooth/cmtp/capi.c
+++ b/net/bluetooth/cmtp/capi.c
@@ -21,7 +21,8 @@
 */
 
 #include <linux/module.h>
-
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
@@ -516,33 +517,37 @@ static char *cmtp_procinfo(struct capi_ctr *ctrl)
 	return "CAPI Message Transport Protocol";
 }
 
-static int cmtp_ctr_read_proc(char *page, char **start, off_t off, int count, int *eof, struct capi_ctr *ctrl)
+static int cmtp_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctrl = m->private;
 	struct cmtp_session *session = ctrl->driverdata;
 	struct cmtp_application *app;
 	struct list_head *p, *n;
-	int len = 0;
 
-	len += sprintf(page + len, "%s\n\n", cmtp_procinfo(ctrl));
-	len += sprintf(page + len, "addr %s\n", session->name);
-	len += sprintf(page + len, "ctrl %d\n", session->num);
+	seq_printf(m, "%s\n\n", cmtp_procinfo(ctrl));
+	seq_printf(m, "addr %s\n", session->name);
+	seq_printf(m, "ctrl %d\n", session->num);
 
 	list_for_each_safe(p, n, &session->applications) {
 		app = list_entry(p, struct cmtp_application, list);
-		len += sprintf(page + len, "appl %d -> %d\n", app->appl, app->mapping);
+		seq_printf(m, "appl %d -> %d\n", app->appl, app->mapping);
 	}
 
-	if (off + count >= len)
-		*eof = 1;
-
-	if (len < off)
-		return 0;
-
-	*start = page + off;
+	return 0;
+}
 
-	return ((count < len - off) ? count : len - off);
+static int cmtp_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, cmtp_proc_show, PDE(inode)->data);
 }
 
+static const struct file_operations cmtp_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= cmtp_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
 
 int cmtp_attach_device(struct cmtp_session *session)
 {
@@ -582,7 +587,7 @@ int cmtp_attach_device(struct cmtp_session *session)
 	session->ctrl.send_message  = cmtp_send_message;
 
 	session->ctrl.procinfo      = cmtp_procinfo;
-	session->ctrl.ctr_read_proc = cmtp_ctr_read_proc;
+	session->ctrl.proc_fops = &cmtp_proc_fops;
 
 	if (attach_capi_ctr(&session->ctrl) < 0) {
 		BT_ERR("Can't attach new controller");

^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [patch 1/2] proc_fops: convert drivers/isdn/ to seq_file
  2010-01-05 21:19   ` Alexey Dobriyan
@ 2010-01-10 18:42     ` Tilman Schmidt
  2010-01-10 21:29       ` David Miller
  0 siblings, 1 reply; 13+ messages in thread
From: Tilman Schmidt @ 2010-01-10 18:42 UTC (permalink / raw)
  To: Alexey Dobriyan; +Cc: akpm, isdn, netdev

[-- Attachment #1: Type: text/plain, Size: 7969 bytes --]

Am 05.01.2010 22:19 schrieb Alexey Dobriyan:
> Here is hopefully last version and sorry for delay.

Looks good. Thanks.

> [PATCH] proc_fops: convert drivers/isdn/ to seq_file
> 
> Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Tilman Schmidt <tilman@imap.cc>

for the Documentation and drivers/isdn/gigaset parts.

> ---
> 
>  Documentation/isdn/INTERFACE.CAPI       |    9 -
>  drivers/isdn/capi/capi.c                |   99 +++++-----------
>  drivers/isdn/capi/capidrv.c             |   55 ++------
>  drivers/isdn/capi/kcapi.c               |    8 -
>  drivers/isdn/gigaset/capi.c             |   75 +++++-------
>  drivers/isdn/hardware/avm/avmcard.h     |    6 
>  drivers/isdn/hardware/avm/b1.c          |   54 +++++---
>  drivers/isdn/hardware/avm/b1dma.c       |   71 +++++------
>  drivers/isdn/hardware/avm/b1isa.c       |    2 
>  drivers/isdn/hardware/avm/b1pci.c       |    4 
>  drivers/isdn/hardware/avm/b1pcmcia.c    |    2 
>  drivers/isdn/hardware/avm/c4.c          |   53 +++++---
>  drivers/isdn/hardware/avm/t1isa.c       |    2 
>  drivers/isdn/hardware/avm/t1pci.c       |    2 
>  drivers/isdn/hardware/eicon/capimain.c  |   40 +++---
>  drivers/isdn/hardware/eicon/diva_didd.c |   45 +++----
>  drivers/isdn/hardware/eicon/divasi.c    |   48 ++++---
>  drivers/isdn/hardware/eicon/divasproc.c |  198 ++++++++++++++------------------
>  drivers/isdn/hysdn/hycapi.c             |   56 ++++-----
>  include/linux/isdn/capilli.h            |    3 
>  net/bluetooth/cmtp/capi.c               |   37 +++--
>  21 files changed, 411 insertions(+), 458 deletions(-)
> 
> --- a/Documentation/isdn/INTERFACE.CAPI
> +++ b/Documentation/isdn/INTERFACE.CAPI
> @@ -149,10 +149,11 @@ char *(*procinfo)(struct capi_ctr *ctrlr)
>  	pointer to a callback function returning the entry for the device in
>  	the CAPI controller info table, /proc/capi/controller
>  
> -read_proc_t *ctr_read_proc
> -	pointer to the read_proc callback function for the device's proc file
> -	system entry, /proc/capi/controllers/<n>; will be called with a
> -	pointer to the device's capi_ctr structure as the last (data) argument
> +const struct file_operations *proc_fops
> +	pointers to callback functions for the device's proc file
> +	system entry, /proc/capi/controllers/<n>; pointer to the device's
> +	capi_ctr structure is available from struct proc_dir_entry::data
> +	which is available from struct inode.
>  
>  Note: Callback functions except send_message() are never called in interrupt
>  context.
[...]
> --- a/drivers/isdn/gigaset/capi.c
> +++ b/drivers/isdn/gigaset/capi.c
> @@ -13,6 +13,8 @@
>  
>  #include "gigaset.h"
>  #include <linux/ctype.h>
> +#include <linux/proc_fs.h>
> +#include <linux/seq_file.h>
>  #include <linux/isdn/capilli.h>
>  #include <linux/isdn/capicmd.h>
>  #include <linux/isdn/capiutil.h>
> @@ -2106,35 +2108,22 @@ static char *gigaset_procinfo(struct capi_ctr *ctr)
>  	return ctr->name;	/* ToDo: more? */
>  }
>  
> -/**
> - * gigaset_ctr_read_proc() - build controller proc file entry
> - * @page:	buffer of PAGE_SIZE bytes for receiving the entry.
> - * @start:	unused.
> - * @off:	unused.
> - * @count:	unused.
> - * @eof:	unused.
> - * @ctr:	controller descriptor structure.
> - *
> - * Return value: length of generated entry
> - */
> -static int gigaset_ctr_read_proc(char *page, char **start, off_t off,
> -			  int count, int *eof, struct capi_ctr *ctr)
> +static int gigaset_proc_show(struct seq_file *m, void *v)
>  {
> +	struct capi_ctr *ctr = m->private;
>  	struct cardstate *cs = ctr->driverdata;
>  	char *s;
>  	int i;
> -	int len = 0;
> -	len += sprintf(page+len, "%-16s %s\n", "name", ctr->name);
> -	len += sprintf(page+len, "%-16s %s %s\n", "dev",
> +
> +	seq_printf(m, "%-16s %s\n", "name", ctr->name);
> +	seq_printf(m, "%-16s %s %s\n", "dev",
>  			dev_driver_string(cs->dev), dev_name(cs->dev));
> -	len += sprintf(page+len, "%-16s %d\n", "id", cs->myid);
> +	seq_printf(m, "%-16s %d\n", "id", cs->myid);
>  	if (cs->gotfwver)
> -		len += sprintf(page+len, "%-16s %d.%d.%d.%d\n", "firmware",
> +		seq_printf(m, "%-16s %d.%d.%d.%d\n", "firmware",
>  			cs->fwver[0], cs->fwver[1], cs->fwver[2], cs->fwver[3]);
> -	len += sprintf(page+len, "%-16s %d\n", "channels",
> -			cs->channels);
> -	len += sprintf(page+len, "%-16s %s\n", "onechannel",
> -			cs->onechannel ? "yes" : "no");
> +	seq_printf(m, "%-16s %d\n", "channels", cs->channels);
> +	seq_printf(m, "%-16s %s\n", "onechannel", cs->onechannel ? "yes" : "no");
>  
>  	switch (cs->mode) {
>  	case M_UNKNOWN:
> @@ -2152,7 +2141,7 @@ static int gigaset_ctr_read_proc(char *page, char **start, off_t off,
>  	default:
>  		s = "??";
>  	}
> -	len += sprintf(page+len, "%-16s %s\n", "mode", s);
> +	seq_printf(m, "%-16s %s\n", "mode", s);
>  
>  	switch (cs->mstate) {
>  	case MS_UNINITIALIZED:
> @@ -2176,25 +2165,21 @@ static int gigaset_ctr_read_proc(char *page, char **start, off_t off,
>  	default:
>  		s = "??";
>  	}
> -	len += sprintf(page+len, "%-16s %s\n", "mstate", s);
> +	seq_printf(m, "%-16s %s\n", "mstate", s);
>  
> -	len += sprintf(page+len, "%-16s %s\n", "running",
> -			cs->running ? "yes" : "no");
> -	len += sprintf(page+len, "%-16s %s\n", "connected",
> -			cs->connected ? "yes" : "no");
> -	len += sprintf(page+len, "%-16s %s\n", "isdn_up",
> -			cs->isdn_up ? "yes" : "no");
> -	len += sprintf(page+len, "%-16s %s\n", "cidmode",
> -			cs->cidmode ? "yes" : "no");
> +	seq_printf(m, "%-16s %s\n", "running", cs->running ? "yes" : "no");
> +	seq_printf(m, "%-16s %s\n", "connected", cs->connected ? "yes" : "no");
> +	seq_printf(m, "%-16s %s\n", "isdn_up", cs->isdn_up ? "yes" : "no");
> +	seq_printf(m, "%-16s %s\n", "cidmode", cs->cidmode ? "yes" : "no");
>  
>  	for (i = 0; i < cs->channels; i++) {
> -		len += sprintf(page+len, "[%d]%-13s %d\n", i, "corrupted",
> +		seq_printf(m, "[%d]%-13s %d\n", i, "corrupted",
>  				cs->bcs[i].corrupted);
> -		len += sprintf(page+len, "[%d]%-13s %d\n", i, "trans_down",
> +		seq_printf(m, "[%d]%-13s %d\n", i, "trans_down",
>  				cs->bcs[i].trans_down);
> -		len += sprintf(page+len, "[%d]%-13s %d\n", i, "trans_up",
> +		seq_printf(m, "[%d]%-13s %d\n", i, "trans_up",
>  				cs->bcs[i].trans_up);
> -		len += sprintf(page+len, "[%d]%-13s %d\n", i, "chstate",
> +		seq_printf(m, "[%d]%-13s %d\n", i, "chstate",
>  				cs->bcs[i].chstate);
>  		switch (cs->bcs[i].proto2) {
>  		case L2_BITSYNC:
> @@ -2209,11 +2194,23 @@ static int gigaset_ctr_read_proc(char *page, char **start, off_t off,
>  		default:
>  			s = "??";
>  		}
> -		len += sprintf(page+len, "[%d]%-13s %s\n", i, "proto2", s);
> +		seq_printf(m, "[%d]%-13s %s\n", i, "proto2", s);
>  	}
> -	return len;
> +	return 0;
>  }
>  
> +static int gigaset_proc_open(struct inode *inode, struct file *file)
> +{
> +	return single_open(file, gigaset_proc_show, PDE(inode)->data);
> +}
> +
> +static const struct file_operations gigaset_proc_fops = {
> +	.owner		= THIS_MODULE,
> +	.open		= gigaset_proc_open,
> +	.read		= seq_read,
> +	.llseek		= seq_lseek,
> +	.release	= single_release,
> +};
>  
>  static struct capi_driver capi_driver_gigaset = {
>  	.name		= "gigaset",
> @@ -2256,7 +2253,7 @@ int gigaset_isdn_register(struct cardstate *cs, const char *isdnid)
>  	iif->ctr.release_appl  = gigaset_release_appl;
>  	iif->ctr.send_message  = gigaset_send_message;
>  	iif->ctr.procinfo      = gigaset_procinfo;
> -	iif->ctr.ctr_read_proc = gigaset_ctr_read_proc;
> +	iif->ctr.proc_fops = &gigaset_proc_fops;
>  	INIT_LIST_HEAD(&iif->appls);
>  	skb_queue_head_init(&iif->sendqueue);
>  	atomic_set(&iif->sendqlen, 0);

-- 
Tilman Schmidt                    E-Mail: tilman@imap.cc
Bonn, Germany
Diese Nachricht besteht zu 100% aus wiederverwerteten Bits.
Ungeöffnet mindestens haltbar bis: (siehe Rückseite)


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^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [patch 1/2] proc_fops: convert drivers/isdn/ to seq_file
  2010-01-10 18:42     ` Tilman Schmidt
@ 2010-01-10 21:29       ` David Miller
  2010-01-10 23:33         ` Karsten Keil
  2010-01-14  1:37         ` [ISDN] " Karsten Keil
  0 siblings, 2 replies; 13+ messages in thread
From: David Miller @ 2010-01-10 21:29 UTC (permalink / raw)
  To: tilman; +Cc: adobriyan, akpm, isdn, netdev

From: Tilman Schmidt <tilman@imap.cc>
Date: Sun, 10 Jan 2010 19:42:49 +0100

> Am 05.01.2010 22:19 schrieb Alexey Dobriyan:
>> Here is hopefully last version and sorry for delay.
> 
> Looks good. Thanks.
> 
>> [PATCH] proc_fops: convert drivers/isdn/ to seq_file
>> 
>> Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
> Acked-by: Tilman Schmidt <tilman@imap.cc>
> 
> for the Documentation and drivers/isdn/gigaset parts.

Can the "acting ISDN maintainer" formally submit this to
me?

^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [patch 1/2] proc_fops: convert drivers/isdn/ to seq_file
  2010-01-10 21:29       ` David Miller
@ 2010-01-10 23:33         ` Karsten Keil
  2010-01-14  1:37         ` [ISDN] " Karsten Keil
  1 sibling, 0 replies; 13+ messages in thread
From: Karsten Keil @ 2010-01-10 23:33 UTC (permalink / raw)
  To: David Miller; +Cc: tilman, adobriyan, akpm, netdev

On Sonntag, 10. Januar 2010 22:29:31 David Miller wrote:
> From: Tilman Schmidt <tilman@imap.cc>
> Date: Sun, 10 Jan 2010 19:42:49 +0100
> 
> > Am 05.01.2010 22:19 schrieb Alexey Dobriyan:
> >> Here is hopefully last version and sorry for delay.
> >
> > Looks good. Thanks.
> >
> >> [PATCH] proc_fops: convert drivers/isdn/ to seq_file
> >>
> >> Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
> >
> > Acked-by: Tilman Schmidt <tilman@imap.cc>
> >
> > for the Documentation and drivers/isdn/gigaset parts.
> 
> Can the "acting ISDN maintainer" formally submit this to
> me?
> 
Will do this during next 2 days.

Karsten

^ permalink raw reply	[flat|nested] 13+ messages in thread

* [ISDN] proc_fops: convert drivers/isdn/ to seq_file
  2010-01-10 21:29       ` David Miller
  2010-01-10 23:33         ` Karsten Keil
@ 2010-01-14  1:37         ` Karsten Keil
  2010-01-14  1:53           ` David Miller
  2010-01-14  4:29           ` David Miller
  1 sibling, 2 replies; 13+ messages in thread
From: Karsten Keil @ 2010-01-14  1:37 UTC (permalink / raw)
  To: David Miller; +Cc: tilman, adobriyan, akpm, netdev


From: Alexey Dobriyan <adobriyan@gmail.com>

Convert code away from ->read_proc/->write_proc interfaces.  Switch to
proc_create()/proc_create_data() which make addition of proc entries
reliable wrt NULL ->proc_fops, NULL ->data and so on.

Problem with ->read_proc et al is described here commit
786d7e1612f0b0adb6046f19b906609e4fe8b1ba "Fix rmmod/read/write races in
/proc entries" 
[akpm@linux-foundation.org: CONFIG_PROC_FS=n build fix]

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: Karsten Keil <keil@b1-systems.de>
---
 Documentation/isdn/INTERFACE.CAPI       |    9 +-
 drivers/isdn/capi/capi.c                |   99 ++++++----------
 drivers/isdn/capi/capidrv.c             |   55 +++------
 drivers/isdn/capi/kcapi.c               |    8 +-
 drivers/isdn/gigaset/capi.c             |   75 ++++++------
 drivers/isdn/hardware/avm/avmcard.h     |    6 +-
 drivers/isdn/hardware/avm/b1.c          |   54 +++++----
 drivers/isdn/hardware/avm/b1dma.c       |   71 ++++++------
 drivers/isdn/hardware/avm/b1isa.c       |    2 +-
 drivers/isdn/hardware/avm/b1pci.c       |    4 +-
 drivers/isdn/hardware/avm/b1pcmcia.c    |    2 +-
 drivers/isdn/hardware/avm/c4.c          |   53 +++++----
 drivers/isdn/hardware/avm/t1isa.c       |    2 +-
 drivers/isdn/hardware/avm/t1pci.c       |    2 +-
 drivers/isdn/hardware/eicon/capimain.c  |   40 ++++---
 drivers/isdn/hardware/eicon/diva_didd.c |   45 ++++----
 drivers/isdn/hardware/eicon/divasi.c    |   48 ++++----
 drivers/isdn/hardware/eicon/divasproc.c |  198 
++++++++++++++-----------------
 drivers/isdn/hysdn/hycapi.c             |   56 +++++-----
 include/linux/isdn/capilli.h            |    3 +-
 net/bluetooth/cmtp/capi.c               |   37 ++++---
 21 files changed, 411 insertions(+), 458 deletions(-)

diff --git a/Documentation/isdn/INTERFACE.CAPI 
b/Documentation/isdn/INTERFACE.CAPI
index 5fe8de5..f172091 100644
--- a/Documentation/isdn/INTERFACE.CAPI
+++ b/Documentation/isdn/INTERFACE.CAPI
@@ -149,10 +149,11 @@ char *(*procinfo)(struct capi_ctr *ctrlr)
 	pointer to a callback function returning the entry for the device in
 	the CAPI controller info table, /proc/capi/controller
 
-read_proc_t *ctr_read_proc
-	pointer to the read_proc callback function for the device's proc file
-	system entry, /proc/capi/controllers/<n>; will be called with a
-	pointer to the device's capi_ctr structure as the last (data) argument
+const struct file_operations *proc_fops
+	pointers to callback functions for the device's proc file
+	system entry, /proc/capi/controllers/<n>; pointer to the device's
+	capi_ctr structure is available from struct proc_dir_entry::data
+	which is available from struct inode.
 
 Note: Callback functions except send_message() are never called in interrupt
 context.
diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c
index 65bf91e..79f9364 100644
--- a/drivers/isdn/capi/capi.c
+++ b/drivers/isdn/capi/capi.c
@@ -33,6 +33,7 @@
 #endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
 #include <linux/skbuff.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/poll.h>
 #include <linux/capi.h>
 #include <linux/kernelcapi.h>
@@ -1407,114 +1408,84 @@ static void capinc_tty_exit(void)
  * /proc/capi/capi20:
  *  minor applid nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt
  */
-static int proc_capidev_read_proc(char *page, char **start, off_t off,
-                                       int count, int *eof, void *data)
+static int capi20_proc_show(struct seq_file *m, void *v)
 {
         struct capidev *cdev;
 	struct list_head *l;
-	int len = 0;
 
 	read_lock(&capidev_list_lock);
 	list_for_each(l, &capidev_list) {
 		cdev = list_entry(l, struct capidev, list);
-		len += sprintf(page+len, "0 %d %lu %lu %lu %lu\n",
+		seq_printf(m, "0 %d %lu %lu %lu %lu\n",
 			cdev->ap.applid,
 			cdev->ap.nrecvctlpkt,
 			cdev->ap.nrecvdatapkt,
 			cdev->ap.nsentctlpkt,
 			cdev->ap.nsentdatapkt);
-		if (len <= off) {
-			off -= len;
-			len = 0;
-		} else {
-			if (len-off > count)
-				goto endloop;
-		}
 	}
-
-endloop:
 	read_unlock(&capidev_list_lock);
-	if (len < count)
-		*eof = 1;
-	if (len > count) len = count;
-	if (len < 0) len = 0;
-	return len;
+	return 0;
 }
 
+static int capi20_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, capi20_proc_show, NULL);
+}
+
+static const struct file_operations capi20_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= capi20_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 /*
  * /proc/capi/capi20ncci:
  *  applid ncci
  */
-static int proc_capincci_read_proc(char *page, char **start, off_t off,
-                                       int count, int *eof, void *data)
+static int capi20ncci_proc_show(struct seq_file *m, void *v)
 {
         struct capidev *cdev;
         struct capincci *np;
 	struct list_head *l;
-	int len = 0;
 
 	read_lock(&capidev_list_lock);
 	list_for_each(l, &capidev_list) {
 		cdev = list_entry(l, struct capidev, list);
 		for (np=cdev->nccis; np; np = np->next) {
-			len += sprintf(page+len, "%d 0x%x\n",
+			seq_printf(m, "%d 0x%x\n",
 				       cdev->ap.applid,
 				       np->ncci);
-			if (len <= off) {
-				off -= len;
-				len = 0;
-			} else {
-				if (len-off > count)
-					goto endloop;
-			}
 		}
 	}
-endloop:
 	read_unlock(&capidev_list_lock);
-	*start = page+off;
-	if (len < count)
-		*eof = 1;
-	if (len>count) len = count;
-	if (len<0) len = 0;
-	return len;
+	return 0;
 }
 
-static struct procfsentries {
-  char *name;
-  mode_t mode;
-  int (*read_proc)(char *page, char **start, off_t off,
-                                       int count, int *eof, void *data);
-  struct proc_dir_entry *procent;
-} procfsentries[] = {
-   /* { "capi",		  S_IFDIR, 0 }, */
-   { "capi/capi20", 	  0	 , proc_capidev_read_proc },
-   { "capi/capi20ncci",   0	 , proc_capincci_read_proc },
+static int capi20ncci_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, capi20ncci_proc_show, NULL);
+}
+
+static const struct file_operations capi20ncci_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= capi20ncci_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
 };
 
 static void __init proc_init(void)
 {
-    int nelem = ARRAY_SIZE(procfsentries);
-    int i;
-
-    for (i=0; i < nelem; i++) {
-        struct procfsentries *p = procfsentries + i;
-	p->procent = create_proc_entry(p->name, p->mode, NULL);
-	if (p->procent) p->procent->read_proc = p->read_proc;
-    }
+	proc_create("capi/capi20", 0, NULL, &capi20_proc_fops);
+	proc_create("capi/capi20ncci", 0, NULL, &capi20ncci_proc_fops);
 }
 
 static void __exit proc_exit(void)
 {
-    int nelem = ARRAY_SIZE(procfsentries);
-    int i;
-
-    for (i=nelem-1; i >= 0; i--) {
-        struct procfsentries *p = procfsentries + i;
-	if (p->procent) {
-	   remove_proc_entry(p->name, NULL);
-	   p->procent = NULL;
-	}
-    }
+	remove_proc_entry("capi/capi20", NULL);
+	remove_proc_entry("capi/capi20ncci", NULL);
 }
 
 /* -------- init function and module interface ---------------------- */
diff --git a/drivers/isdn/capi/capidrv.c b/drivers/isdn/capi/capidrv.c
index 66b7d7a..bb45015 100644
--- a/drivers/isdn/capi/capidrv.c
+++ b/drivers/isdn/capi/capidrv.c
@@ -24,6 +24,7 @@
 #include <linux/isdn.h>
 #include <linux/isdnif.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/capi.h>
 #include <linux/kernelcapi.h>
 #include <linux/ctype.h>
@@ -2229,59 +2230,37 @@ static void lower_callback(unsigned int cmd, u32 
contr, void *data)
  * /proc/capi/capidrv:
  * nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt
  */
-static int proc_capidrv_read_proc(char *page, char **start, off_t off,
-                                       int count, int *eof, void *data)
+static int capidrv_proc_show(struct seq_file *m, void *v)
 {
-	int len = 0;
-
-	len += sprintf(page+len, "%lu %lu %lu %lu\n",
+	seq_printf(m, "%lu %lu %lu %lu\n",
 			global.ap.nrecvctlpkt,
 			global.ap.nrecvdatapkt,
 			global.ap.nsentctlpkt,
 			global.ap.nsentdatapkt);
-	if (off+count >= len)
-	   *eof = 1;
-	if (len < off)
-           return 0;
-	*start = page + off;
-	return ((count < len-off) ? count : len-off);
+	return 0;
+}
+
+static int capidrv_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, capidrv_proc_show, NULL);
 }
 
-static struct procfsentries {
-  char *name;
-  mode_t mode;
-  int (*read_proc)(char *page, char **start, off_t off,
-                                       int count, int *eof, void *data);
-  struct proc_dir_entry *procent;
-} procfsentries[] = {
-   /* { "capi",		  S_IFDIR, 0 }, */
-   { "capi/capidrv", 	  0	 , proc_capidrv_read_proc },
+static const struct file_operations capidrv_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= capidrv_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
 };
 
 static void __init proc_init(void)
 {
-    int nelem = ARRAY_SIZE(procfsentries);
-    int i;
-
-    for (i=0; i < nelem; i++) {
-        struct procfsentries *p = procfsentries + i;
-	p->procent = create_proc_entry(p->name, p->mode, NULL);
-	if (p->procent) p->procent->read_proc = p->read_proc;
-    }
+	proc_create("capi/capidrv", 0, NULL, &capidrv_proc_fops);
 }
 
 static void __exit proc_exit(void)
 {
-    int nelem = ARRAY_SIZE(procfsentries);
-    int i;
-
-    for (i=nelem-1; i >= 0; i--) {
-        struct procfsentries *p = procfsentries + i;
-	if (p->procent) {
-	   remove_proc_entry(p->name, NULL);
-	   p->procent = NULL;
-	}
-    }
+	remove_proc_entry("capi/capidrv", NULL);
 }
 
 static int __init capidrv_init(void)
diff --git a/drivers/isdn/capi/kcapi.c b/drivers/isdn/capi/kcapi.c
index dc506ab..b0bacf3 100644
--- a/drivers/isdn/capi/kcapi.c
+++ b/drivers/isdn/capi/kcapi.c
@@ -490,13 +490,7 @@ attach_capi_ctr(struct capi_ctr *card)
 	card->traceflag = showcapimsgs;
 
 	sprintf(card->procfn, "capi/controllers/%d", card->cnr);
-	card->procent = create_proc_entry(card->procfn, 0, NULL);
-	if (card->procent) {
-	   card->procent->read_proc = 
-		(int (*)(char *,char **,off_t,int,int *,void *))
-			card->ctr_read_proc;
-	   card->procent->data = card;
-	}
+	card->procent = proc_create_data(card->procfn, 0, NULL, card->proc_fops, 
card);
 
 	ncards++;
 	printk(KERN_NOTICE "kcapi: Controller [%03d]: %s attached\n",
diff --git a/drivers/isdn/gigaset/capi.c b/drivers/isdn/gigaset/capi.c
index 3f5cd06..6f0ae32 100644
--- a/drivers/isdn/gigaset/capi.c
+++ b/drivers/isdn/gigaset/capi.c
@@ -13,6 +13,8 @@
 
 #include "gigaset.h"
 #include <linux/ctype.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/isdn/capilli.h>
 #include <linux/isdn/capicmd.h>
 #include <linux/isdn/capiutil.h>
@@ -2106,35 +2108,22 @@ static char *gigaset_procinfo(struct capi_ctr *ctr)
 	return ctr->name;	/* ToDo: more? */
 }
 
-/**
- * gigaset_ctr_read_proc() - build controller proc file entry
- * @page:	buffer of PAGE_SIZE bytes for receiving the entry.
- * @start:	unused.
- * @off:	unused.
- * @count:	unused.
- * @eof:	unused.
- * @ctr:	controller descriptor structure.
- *
- * Return value: length of generated entry
- */
-static int gigaset_ctr_read_proc(char *page, char **start, off_t off,
-			  int count, int *eof, struct capi_ctr *ctr)
+static int gigaset_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctr = m->private;
 	struct cardstate *cs = ctr->driverdata;
 	char *s;
 	int i;
-	int len = 0;
-	len += sprintf(page+len, "%-16s %s\n", "name", ctr->name);
-	len += sprintf(page+len, "%-16s %s %s\n", "dev",
+
+	seq_printf(m, "%-16s %s\n", "name", ctr->name);
+	seq_printf(m, "%-16s %s %s\n", "dev",
 			dev_driver_string(cs->dev), dev_name(cs->dev));
-	len += sprintf(page+len, "%-16s %d\n", "id", cs->myid);
+	seq_printf(m, "%-16s %d\n", "id", cs->myid);
 	if (cs->gotfwver)
-		len += sprintf(page+len, "%-16s %d.%d.%d.%d\n", "firmware",
+		seq_printf(m, "%-16s %d.%d.%d.%d\n", "firmware",
 			cs->fwver[0], cs->fwver[1], cs->fwver[2], cs->fwver[3]);
-	len += sprintf(page+len, "%-16s %d\n", "channels",
-			cs->channels);
-	len += sprintf(page+len, "%-16s %s\n", "onechannel",
-			cs->onechannel ? "yes" : "no");
+	seq_printf(m, "%-16s %d\n", "channels", cs->channels);
+	seq_printf(m, "%-16s %s\n", "onechannel", cs->onechannel ? "yes" : "no");
 
 	switch (cs->mode) {
 	case M_UNKNOWN:
@@ -2152,7 +2141,7 @@ static int gigaset_ctr_read_proc(char *page, char 
**start, off_t off,
 	default:
 		s = "??";
 	}
-	len += sprintf(page+len, "%-16s %s\n", "mode", s);
+	seq_printf(m, "%-16s %s\n", "mode", s);
 
 	switch (cs->mstate) {
 	case MS_UNINITIALIZED:
@@ -2176,25 +2165,21 @@ static int gigaset_ctr_read_proc(char *page, char 
**start, off_t off,
 	default:
 		s = "??";
 	}
-	len += sprintf(page+len, "%-16s %s\n", "mstate", s);
+	seq_printf(m, "%-16s %s\n", "mstate", s);
 
-	len += sprintf(page+len, "%-16s %s\n", "running",
-			cs->running ? "yes" : "no");
-	len += sprintf(page+len, "%-16s %s\n", "connected",
-			cs->connected ? "yes" : "no");
-	len += sprintf(page+len, "%-16s %s\n", "isdn_up",
-			cs->isdn_up ? "yes" : "no");
-	len += sprintf(page+len, "%-16s %s\n", "cidmode",
-			cs->cidmode ? "yes" : "no");
+	seq_printf(m, "%-16s %s\n", "running", cs->running ? "yes" : "no");
+	seq_printf(m, "%-16s %s\n", "connected", cs->connected ? "yes" : "no");
+	seq_printf(m, "%-16s %s\n", "isdn_up", cs->isdn_up ? "yes" : "no");
+	seq_printf(m, "%-16s %s\n", "cidmode", cs->cidmode ? "yes" : "no");
 
 	for (i = 0; i < cs->channels; i++) {
-		len += sprintf(page+len, "[%d]%-13s %d\n", i, "corrupted",
+		seq_printf(m, "[%d]%-13s %d\n", i, "corrupted",
 				cs->bcs[i].corrupted);
-		len += sprintf(page+len, "[%d]%-13s %d\n", i, "trans_down",
+		seq_printf(m, "[%d]%-13s %d\n", i, "trans_down",
 				cs->bcs[i].trans_down);
-		len += sprintf(page+len, "[%d]%-13s %d\n", i, "trans_up",
+		seq_printf(m, "[%d]%-13s %d\n", i, "trans_up",
 				cs->bcs[i].trans_up);
-		len += sprintf(page+len, "[%d]%-13s %d\n", i, "chstate",
+		seq_printf(m, "[%d]%-13s %d\n", i, "chstate",
 				cs->bcs[i].chstate);
 		switch (cs->bcs[i].proto2) {
 		case L2_BITSYNC:
@@ -2209,11 +2194,23 @@ static int gigaset_ctr_read_proc(char *page, char 
**start, off_t off,
 		default:
 			s = "??";
 		}
-		len += sprintf(page+len, "[%d]%-13s %s\n", i, "proto2", s);
+		seq_printf(m, "[%d]%-13s %s\n", i, "proto2", s);
 	}
-	return len;
+	return 0;
 }
 
+static int gigaset_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, gigaset_proc_show, PDE(inode)->data);
+}
+
+static const struct file_operations gigaset_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= gigaset_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
 
 static struct capi_driver capi_driver_gigaset = {
 	.name		= "gigaset",
@@ -2256,7 +2253,7 @@ int gigaset_isdn_register(struct cardstate *cs, const 
char *isdnid)
 	iif->ctr.release_appl  = gigaset_release_appl;
 	iif->ctr.send_message  = gigaset_send_message;
 	iif->ctr.procinfo      = gigaset_procinfo;
-	iif->ctr.ctr_read_proc = gigaset_ctr_read_proc;
+	iif->ctr.proc_fops = &gigaset_proc_fops;
 	INIT_LIST_HEAD(&iif->appls);
 	skb_queue_head_init(&iif->sendqueue);
 	atomic_set(&iif->sendqlen, 0);
diff --git a/drivers/isdn/hardware/avm/avmcard.h 
b/drivers/isdn/hardware/avm/avmcard.h
index d964f07..a70e885 100644
--- a/drivers/isdn/hardware/avm/avmcard.h
+++ b/drivers/isdn/hardware/avm/avmcard.h
@@ -556,8 +556,7 @@ u16  b1_send_message(struct capi_ctr *ctrl, struct sk_buff 
*skb);
 void b1_parse_version(avmctrl_info *card);
 irqreturn_t b1_interrupt(int interrupt, void *devptr);
 
-int b1ctl_read_proc(char *page, char **start, off_t off,
-        		int count, int *eof, struct capi_ctr *ctrl);
+extern const struct file_operations b1ctl_proc_fops;
 
 avmcard_dmainfo *avmcard_dma_alloc(char *name, struct pci_dev *,
 				   long rsize, long ssize);
@@ -577,7 +576,6 @@ void b1dma_register_appl(struct capi_ctr *ctrl,
 				capi_register_params *rp);
 void b1dma_release_appl(struct capi_ctr *ctrl, u16 appl);
 u16  b1dma_send_message(struct capi_ctr *ctrl, struct sk_buff *skb);
-int b1dmactl_read_proc(char *page, char **start, off_t off,
-        		int count, int *eof, struct capi_ctr *ctrl);
+extern const struct file_operations b1dmactl_proc_fops;
 
 #endif /* _AVMCARD_H_ */
diff --git a/drivers/isdn/hardware/avm/b1.c b/drivers/isdn/hardware/avm/b1.c
index a7c0083..c38fa0f 100644
--- a/drivers/isdn/hardware/avm/b1.c
+++ b/drivers/isdn/hardware/avm/b1.c
@@ -12,6 +12,8 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/skbuff.h>
 #include <linux/delay.h>
 #include <linux/mm.h>
@@ -634,18 +636,17 @@ irqreturn_t b1_interrupt(int interrupt, void *devptr)
 }
 
 /* ------------------------------------------------------------- */
-int b1ctl_read_proc(char *page, char **start, off_t off,
-        		int count, int *eof, struct capi_ctr *ctrl)
+static int b1ctl_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctrl = m->private;
 	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 	avmcard *card = cinfo->card;
 	u8 flag;
-	int len = 0;
 	char *s;
 
-	len += sprintf(page+len, "%-16s %s\n", "name", card->name);
-	len += sprintf(page+len, "%-16s 0x%x\n", "io", card->port);
-	len += sprintf(page+len, "%-16s %d\n", "irq", card->irq);
+	seq_printf(m, "%-16s %s\n", "name", card->name);
+	seq_printf(m, "%-16s 0x%x\n", "io", card->port);
+	seq_printf(m, "%-16s %d\n", "irq", card->irq);
 	switch (card->cardtype) {
 	case avm_b1isa: s = "B1 ISA"; break;
 	case avm_b1pci: s = "B1 PCI"; break;
@@ -658,20 +659,20 @@ int b1ctl_read_proc(char *page, char **start, off_t off,
 	case avm_c2: s = "C2"; break;
 	default: s = "???"; break;
 	}
-	len += sprintf(page+len, "%-16s %s\n", "type", s);
+	seq_printf(m, "%-16s %s\n", "type", s);
 	if (card->cardtype == avm_t1isa)
-	   len += sprintf(page+len, "%-16s %d\n", "cardnr", card->cardnr);
+		seq_printf(m, "%-16s %d\n", "cardnr", card->cardnr);
 	if ((s = cinfo->version[VER_DRIVER]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_driver", s);
+		seq_printf(m, "%-16s %s\n", "ver_driver", s);
 	if ((s = cinfo->version[VER_CARDTYPE]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s);
+		seq_printf(m, "%-16s %s\n", "ver_cardtype", s);
 	if ((s = cinfo->version[VER_SERIAL]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_serial", s);
+		seq_printf(m, "%-16s %s\n", "ver_serial", s);
 
 	if (card->cardtype != avm_m1) {
         	flag = ((u8 *)(ctrl->profile.manu))[3];
         	if (flag)
-			len += sprintf(page+len, "%-16s%s%s%s%s%s%s%s\n",
+			seq_printf(m, "%-16s%s%s%s%s%s%s%s\n",
 			"protocol",
 			(flag & 0x01) ? " DSS1" : "",
 			(flag & 0x02) ? " CT1" : "",
@@ -685,7 +686,7 @@ int b1ctl_read_proc(char *page, char **start, off_t off,
 	if (card->cardtype != avm_m1) {
         	flag = ((u8 *)(ctrl->profile.manu))[5];
 		if (flag)
-			len += sprintf(page+len, "%-16s%s%s%s%s\n",
+			seq_printf(m, "%-16s%s%s%s%s\n",
 			"linetype",
 			(flag & 0x01) ? " point to point" : "",
 			(flag & 0x02) ? " point to multipoint" : "",
@@ -693,16 +694,25 @@ int b1ctl_read_proc(char *page, char **start, off_t off,
 			(flag & 0x04) ? " leased line with D-channel" : ""
 			);
 	}
-	len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname);
-
-	if (off+count >= len)
-	   *eof = 1;
-	if (len < off)
-           return 0;
-	*start = page + off;
-	return ((count < len-off) ? count : len-off);
+	seq_printf(m, "%-16s %s\n", "cardname", cinfo->cardname);
+
+	return 0;
+}
+
+static int b1ctl_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, b1ctl_proc_show, PDE(inode)->data);
 }
 
+const struct file_operations b1ctl_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= b1ctl_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+EXPORT_SYMBOL(b1ctl_proc_fops);
+
 /* ------------------------------------------------------------- */
 
 #ifdef CONFIG_PCI
@@ -781,8 +791,6 @@ EXPORT_SYMBOL(b1_send_message);
 EXPORT_SYMBOL(b1_parse_version);
 EXPORT_SYMBOL(b1_interrupt);
 
-EXPORT_SYMBOL(b1ctl_read_proc);
-
 static int __init b1_init(void)
 {
 	char *p;
diff --git a/drivers/isdn/hardware/avm/b1dma.c 
b/drivers/isdn/hardware/avm/b1dma.c
index 0e84aaa..124550d 100644
--- a/drivers/isdn/hardware/avm/b1dma.c
+++ b/drivers/isdn/hardware/avm/b1dma.c
@@ -11,6 +11,8 @@
 
 #include <linux/module.h>
 #include <linux/kernel.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/skbuff.h>
 #include <linux/delay.h>
 #include <linux/mm.h>
@@ -855,21 +857,20 @@ u16 b1dma_send_message(struct capi_ctr *ctrl, struct 
sk_buff *skb)
 
 /* ------------------------------------------------------------- */
 
-int b1dmactl_read_proc(char *page, char **start, off_t off,
-        		int count, int *eof, struct capi_ctr *ctrl)
+static int b1dmactl_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctrl = m->private;
 	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 	avmcard *card = cinfo->card;
 	u8 flag;
-	int len = 0;
 	char *s;
 	u32 txoff, txlen, rxoff, rxlen, csr;
 	unsigned long flags;
 
-	len += sprintf(page+len, "%-16s %s\n", "name", card->name);
-	len += sprintf(page+len, "%-16s 0x%x\n", "io", card->port);
-	len += sprintf(page+len, "%-16s %d\n", "irq", card->irq);
-	len += sprintf(page+len, "%-16s 0x%lx\n", "membase", card->membase);
+	seq_printf(m, "%-16s %s\n", "name", card->name);
+	seq_printf(m, "%-16s 0x%x\n", "io", card->port);
+	seq_printf(m, "%-16s %d\n", "irq", card->irq);
+	seq_printf(m, "%-16s 0x%lx\n", "membase", card->membase);
 	switch (card->cardtype) {
 	case avm_b1isa: s = "B1 ISA"; break;
 	case avm_b1pci: s = "B1 PCI"; break;
@@ -882,18 +883,18 @@ int b1dmactl_read_proc(char *page, char **start, off_t 
off,
 	case avm_c2: s = "C2"; break;
 	default: s = "???"; break;
 	}
-	len += sprintf(page+len, "%-16s %s\n", "type", s);
+	seq_printf(m, "%-16s %s\n", "type", s);
 	if ((s = cinfo->version[VER_DRIVER]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_driver", s);
+		seq_printf(m, "%-16s %s\n", "ver_driver", s);
 	if ((s = cinfo->version[VER_CARDTYPE]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s);
+		seq_printf(m, "%-16s %s\n", "ver_cardtype", s);
 	if ((s = cinfo->version[VER_SERIAL]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_serial", s);
+		seq_printf(m, "%-16s %s\n", "ver_serial", s);
 
 	if (card->cardtype != avm_m1) {
         	flag = ((u8 *)(ctrl->profile.manu))[3];
         	if (flag)
-			len += sprintf(page+len, "%-16s%s%s%s%s%s%s%s\n",
+			seq_printf(m, "%-16s%s%s%s%s%s%s%s\n",
 			"protocol",
 			(flag & 0x01) ? " DSS1" : "",
 			(flag & 0x02) ? " CT1" : "",
@@ -907,7 +908,7 @@ int b1dmactl_read_proc(char *page, char **start, off_t 
off,
 	if (card->cardtype != avm_m1) {
         	flag = ((u8 *)(ctrl->profile.manu))[5];
 		if (flag)
-			len += sprintf(page+len, "%-16s%s%s%s%s\n",
+			seq_printf(m, "%-16s%s%s%s%s\n",
 			"linetype",
 			(flag & 0x01) ? " point to point" : "",
 			(flag & 0x02) ? " point to multipoint" : "",
@@ -915,7 +916,7 @@ int b1dmactl_read_proc(char *page, char **start, off_t 
off,
 			(flag & 0x04) ? " leased line with D-channel" : ""
 			);
 	}
-	len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname);
+	seq_printf(m, "%-16s %s\n", "cardname", cinfo->cardname);
 
 
 	spin_lock_irqsave(&card->lock, flags);
@@ -930,27 +931,30 @@ int b1dmactl_read_proc(char *page, char **start, off_t 
off,
 
 	spin_unlock_irqrestore(&card->lock, flags);
 
-        len += sprintf(page+len, "%-16s 0x%lx\n",
-				"csr (cached)", (unsigned long)card->csr);
-        len += sprintf(page+len, "%-16s 0x%lx\n",
-				"csr", (unsigned long)csr);
-        len += sprintf(page+len, "%-16s %lu\n",
-				"txoff", (unsigned long)txoff);
-        len += sprintf(page+len, "%-16s %lu\n",
-				"txlen", (unsigned long)txlen);
-        len += sprintf(page+len, "%-16s %lu\n",
-				"rxoff", (unsigned long)rxoff);
-        len += sprintf(page+len, "%-16s %lu\n",
-				"rxlen", (unsigned long)rxlen);
-
-	if (off+count >= len)
-	   *eof = 1;
-	if (len < off)
-           return 0;
-	*start = page + off;
-	return ((count < len-off) ? count : len-off);
+	seq_printf(m, "%-16s 0x%lx\n", "csr (cached)", (unsigned long)card->csr);
+	seq_printf(m, "%-16s 0x%lx\n", "csr", (unsigned long)csr);
+	seq_printf(m, "%-16s %lu\n", "txoff", (unsigned long)txoff);
+	seq_printf(m, "%-16s %lu\n", "txlen", (unsigned long)txlen);
+	seq_printf(m, "%-16s %lu\n", "rxoff", (unsigned long)rxoff);
+	seq_printf(m, "%-16s %lu\n", "rxlen", (unsigned long)rxlen);
+
+	return 0;
+}
+
+static int b1dmactl_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, b1dmactl_proc_show, PDE(inode)->data);
 }
 
+const struct file_operations b1dmactl_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= b1dmactl_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+EXPORT_SYMBOL(b1dmactl_proc_fops);
+
 /* ------------------------------------------------------------- */
 
 EXPORT_SYMBOL(b1dma_reset);
@@ -963,7 +967,6 @@ EXPORT_SYMBOL(b1dma_reset_ctr);
 EXPORT_SYMBOL(b1dma_register_appl);
 EXPORT_SYMBOL(b1dma_release_appl);
 EXPORT_SYMBOL(b1dma_send_message);
-EXPORT_SYMBOL(b1dmactl_read_proc);
 
 static int __init b1dma_init(void)
 {
diff --git a/drivers/isdn/hardware/avm/b1isa.c 
b/drivers/isdn/hardware/avm/b1isa.c
index 6461a32..ff53905 100644
--- a/drivers/isdn/hardware/avm/b1isa.c
+++ b/drivers/isdn/hardware/avm/b1isa.c
@@ -121,7 +121,7 @@ static int b1isa_probe(struct pci_dev *pdev)
 	cinfo->capi_ctrl.load_firmware = b1_load_firmware;
 	cinfo->capi_ctrl.reset_ctr     = b1_reset_ctr;
 	cinfo->capi_ctrl.procinfo      = b1isa_procinfo;
-	cinfo->capi_ctrl.ctr_read_proc = b1ctl_read_proc;
+	cinfo->capi_ctrl.proc_fops = &b1ctl_proc_fops;
 	strcpy(cinfo->capi_ctrl.name, card->name);
 
 	retval = attach_capi_ctr(&cinfo->capi_ctrl);
diff --git a/drivers/isdn/hardware/avm/b1pci.c 
b/drivers/isdn/hardware/avm/b1pci.c
index 5b314a2..c97e431 100644
--- a/drivers/isdn/hardware/avm/b1pci.c
+++ b/drivers/isdn/hardware/avm/b1pci.c
@@ -112,7 +112,7 @@ static int b1pci_probe(struct capicardparams *p, struct 
pci_dev *pdev)
 	cinfo->capi_ctrl.load_firmware = b1_load_firmware;
 	cinfo->capi_ctrl.reset_ctr     = b1_reset_ctr;
 	cinfo->capi_ctrl.procinfo      = b1pci_procinfo;
-	cinfo->capi_ctrl.ctr_read_proc = b1ctl_read_proc;
+	cinfo->capi_ctrl.proc_fops = &b1ctl_proc_fops;
 	strcpy(cinfo->capi_ctrl.name, card->name);
 	cinfo->capi_ctrl.owner         = THIS_MODULE;
 
@@ -251,7 +251,7 @@ static int b1pciv4_probe(struct capicardparams *p, struct 
pci_dev *pdev)
 	cinfo->capi_ctrl.load_firmware = b1dma_load_firmware;
 	cinfo->capi_ctrl.reset_ctr     = b1dma_reset_ctr;
 	cinfo->capi_ctrl.procinfo      = b1pciv4_procinfo;
-	cinfo->capi_ctrl.ctr_read_proc = b1dmactl_read_proc;
+	cinfo->capi_ctrl.proc_fops = &b1dmactl_proc_fops;
 	strcpy(cinfo->capi_ctrl.name, card->name);
 
 	retval = attach_capi_ctr(&cinfo->capi_ctrl);
diff --git a/drivers/isdn/hardware/avm/b1pcmcia.c 
b/drivers/isdn/hardware/avm/b1pcmcia.c
index 7740403..d6391e0 100644
--- a/drivers/isdn/hardware/avm/b1pcmcia.c
+++ b/drivers/isdn/hardware/avm/b1pcmcia.c
@@ -108,7 +108,7 @@ static int b1pcmcia_add_card(unsigned int port, unsigned 
irq,
 	cinfo->capi_ctrl.load_firmware = b1_load_firmware;
 	cinfo->capi_ctrl.reset_ctr     = b1_reset_ctr;
 	cinfo->capi_ctrl.procinfo      = b1pcmcia_procinfo;
-	cinfo->capi_ctrl.ctr_read_proc = b1ctl_read_proc;
+	cinfo->capi_ctrl.proc_fops = &b1ctl_proc_fops;
 	strcpy(cinfo->capi_ctrl.name, card->name);
 
 	retval = attach_capi_ctr(&cinfo->capi_ctrl);
diff --git a/drivers/isdn/hardware/avm/c4.c b/drivers/isdn/hardware/avm/c4.c
index 6833301..de6e6b3 100644
--- a/drivers/isdn/hardware/avm/c4.c
+++ b/drivers/isdn/hardware/avm/c4.c
@@ -11,6 +11,8 @@
 
 #include <linux/module.h>
 #include <linux/kernel.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/skbuff.h>
 #include <linux/delay.h>
 #include <linux/mm.h>
@@ -1062,19 +1064,18 @@ static char *c4_procinfo(struct capi_ctr *ctrl)
 	return cinfo->infobuf;
 }
 
-static int c4_read_proc(char *page, char **start, off_t off,
-        		int count, int *eof, struct capi_ctr *ctrl)
+static int c4_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctrl = m->private;
 	avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
 	avmcard *card = cinfo->card;
 	u8 flag;
-	int len = 0;
 	char *s;
 
-	len += sprintf(page+len, "%-16s %s\n", "name", card->name);
-	len += sprintf(page+len, "%-16s 0x%x\n", "io", card->port);
-	len += sprintf(page+len, "%-16s %d\n", "irq", card->irq);
-	len += sprintf(page+len, "%-16s 0x%lx\n", "membase", card->membase);
+	seq_printf(m, "%-16s %s\n", "name", card->name);
+	seq_printf(m, "%-16s 0x%x\n", "io", card->port);
+	seq_printf(m, "%-16s %d\n", "irq", card->irq);
+	seq_printf(m, "%-16s 0x%lx\n", "membase", card->membase);
 	switch (card->cardtype) {
 	case avm_b1isa: s = "B1 ISA"; break;
 	case avm_b1pci: s = "B1 PCI"; break;
@@ -1087,18 +1088,18 @@ static int c4_read_proc(char *page, char **start, 
off_t off,
 	case avm_c2: s = "C2"; break;
 	default: s = "???"; break;
 	}
-	len += sprintf(page+len, "%-16s %s\n", "type", s);
+	seq_printf(m, "%-16s %s\n", "type", s);
 	if ((s = cinfo->version[VER_DRIVER]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_driver", s);
+		seq_printf(m, "%-16s %s\n", "ver_driver", s);
 	if ((s = cinfo->version[VER_CARDTYPE]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s);
+		seq_printf(m, "%-16s %s\n", "ver_cardtype", s);
 	if ((s = cinfo->version[VER_SERIAL]) != NULL)
-	   len += sprintf(page+len, "%-16s %s\n", "ver_serial", s);
+		seq_printf(m, "%-16s %s\n", "ver_serial", s);
 
 	if (card->cardtype != avm_m1) {
         	flag = ((u8 *)(ctrl->profile.manu))[3];
         	if (flag)
-			len += sprintf(page+len, "%-16s%s%s%s%s%s%s%s\n",
+			seq_printf(m, "%-16s%s%s%s%s%s%s%s\n",
 			"protocol",
 			(flag & 0x01) ? " DSS1" : "",
 			(flag & 0x02) ? " CT1" : "",
@@ -1112,7 +1113,7 @@ static int c4_read_proc(char *page, char **start, off_t 
off,
 	if (card->cardtype != avm_m1) {
         	flag = ((u8 *)(ctrl->profile.manu))[5];
 		if (flag)
-			len += sprintf(page+len, "%-16s%s%s%s%s\n",
+			seq_printf(m, "%-16s%s%s%s%s\n",
 			"linetype",
 			(flag & 0x01) ? " point to point" : "",
 			(flag & 0x02) ? " point to multipoint" : "",
@@ -1120,16 +1121,24 @@ static int c4_read_proc(char *page, char **start, 
off_t off,
 			(flag & 0x04) ? " leased line with D-channel" : ""
 			);
 	}
-	len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname);
-
-	if (off+count >= len)
-	   *eof = 1;
-	if (len < off)
-           return 0;
-	*start = page + off;
-	return ((count < len-off) ? count : len-off);
+	seq_printf(m, "%-16s %s\n", "cardname", cinfo->cardname);
+
+	return 0;
 }
 
+static int c4_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, c4_proc_show, PDE(inode)->data);
+}
+
+static const struct file_operations c4_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= c4_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 /* ------------------------------------------------------------- */
 
 static int c4_add_card(struct capicardparams *p, struct pci_dev *dev,
@@ -1201,7 +1210,7 @@ static int c4_add_card(struct capicardparams *p, struct 
pci_dev *dev,
 		cinfo->capi_ctrl.load_firmware = c4_load_firmware;
 		cinfo->capi_ctrl.reset_ctr     = c4_reset_ctr;
 		cinfo->capi_ctrl.procinfo      = c4_procinfo;
-		cinfo->capi_ctrl.ctr_read_proc = c4_read_proc;
+		cinfo->capi_ctrl.proc_fops = &c4_proc_fops;
 		strcpy(cinfo->capi_ctrl.name, card->name);
 
 		retval = attach_capi_ctr(&cinfo->capi_ctrl);
diff --git a/drivers/isdn/hardware/avm/t1isa.c 
b/drivers/isdn/hardware/avm/t1isa.c
index 1c53fd4..baeeb3c 100644
--- a/drivers/isdn/hardware/avm/t1isa.c
+++ b/drivers/isdn/hardware/avm/t1isa.c
@@ -429,7 +429,7 @@ static int t1isa_probe(struct pci_dev *pdev, int cardnr)
 	cinfo->capi_ctrl.load_firmware = t1isa_load_firmware;
 	cinfo->capi_ctrl.reset_ctr     = t1isa_reset_ctr;
 	cinfo->capi_ctrl.procinfo      = t1isa_procinfo;
-	cinfo->capi_ctrl.ctr_read_proc = b1ctl_read_proc;
+	cinfo->capi_ctrl.proc_fops = &b1ctl_proc_fops;
 	strcpy(cinfo->capi_ctrl.name, card->name);
 
 	retval = attach_capi_ctr(&cinfo->capi_ctrl);
diff --git a/drivers/isdn/hardware/avm/t1pci.c 
b/drivers/isdn/hardware/avm/t1pci.c
index e6d298d..5a3f830 100644
--- a/drivers/isdn/hardware/avm/t1pci.c
+++ b/drivers/isdn/hardware/avm/t1pci.c
@@ -119,7 +119,7 @@ static int t1pci_add_card(struct capicardparams *p, struct 
pci_dev *pdev)
 	cinfo->capi_ctrl.load_firmware = b1dma_load_firmware;
 	cinfo->capi_ctrl.reset_ctr     = b1dma_reset_ctr;
 	cinfo->capi_ctrl.procinfo      = t1pci_procinfo;
-	cinfo->capi_ctrl.ctr_read_proc = b1dmactl_read_proc;
+	cinfo->capi_ctrl.proc_fops = &b1dmactl_proc_fops;
 	strcpy(cinfo->capi_ctrl.name, card->name);
 
 	retval = attach_capi_ctr(&cinfo->capi_ctrl);
diff --git a/drivers/isdn/hardware/eicon/capimain.c 
b/drivers/isdn/hardware/eicon/capimain.c
index 98fcdfc..0f073cd 100644
--- a/drivers/isdn/hardware/eicon/capimain.c
+++ b/drivers/isdn/hardware/eicon/capimain.c
@@ -13,6 +13,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <asm/uaccess.h>
+#include <linux/seq_file.h>
 #include <linux/skbuff.h>
 
 #include "os_capi.h"
@@ -75,25 +76,32 @@ void diva_os_free_message_buffer(diva_os_message_buffer_s 
* dmb)
 /*
  * proc function for controller info
  */
-static int diva_ctl_read_proc(char *page, char **start, off_t off,
-			      int count, int *eof, struct capi_ctr *ctrl)
+static int diva_ctl_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctrl = m->private;
 	diva_card *card = (diva_card *) ctrl->driverdata;
-	int len = 0;
-
-	len += sprintf(page + len, "%s\n", ctrl->name);
-	len += sprintf(page + len, "Serial No. : %s\n", ctrl->serial);
-	len += sprintf(page + len, "Id         : %d\n", card->Id);
-	len += sprintf(page + len, "Channels   : %d\n", card->d.channels);
-
-	if (off + count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len - off) ? count : len - off);
+
+	seq_printf(m, "%s\n", ctrl->name);
+	seq_printf(m, "Serial No. : %s\n", ctrl->serial);
+	seq_printf(m, "Id         : %d\n", card->Id);
+	seq_printf(m, "Channels   : %d\n", card->d.channels);
+
+	return 0;
+}
+
+static int diva_ctl_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, diva_ctl_proc_show, NULL);
 }
 
+static const struct file_operations diva_ctl_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= diva_ctl_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 /*
  * set additional os settings in capi_ctr struct
  */
@@ -102,7 +110,7 @@ void diva_os_set_controller_struct(struct capi_ctr *ctrl)
 	ctrl->driver_name = DRIVERLNAME;
 	ctrl->load_firmware = NULL;
 	ctrl->reset_ctr = NULL;
-	ctrl->ctr_read_proc = diva_ctl_read_proc;
+	ctrl->proc_fops = &diva_ctl_proc_fops;
 	ctrl->owner = THIS_MODULE;
 }
 
diff --git a/drivers/isdn/hardware/eicon/diva_didd.c 
b/drivers/isdn/hardware/eicon/diva_didd.c
index 993b14c..5d06a74 100644
--- a/drivers/isdn/hardware/eicon/diva_didd.c
+++ b/drivers/isdn/hardware/eicon/diva_didd.c
@@ -15,6 +15,7 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <net/net_namespace.h>
 
 #include "platform.h"
@@ -62,39 +63,41 @@ static char *getrev(const char *revision)
 	return rev;
 }
 
-static int
-proc_read(char *page, char **start, off_t off, int count, int *eof,
-	  void *data)
+static int divadidd_proc_show(struct seq_file *m, void *v)
 {
-	int len = 0;
 	char tmprev[32];
 
 	strcpy(tmprev, main_revision);
-	len += sprintf(page + len, "%s\n", DRIVERNAME);
-	len += sprintf(page + len, "name     : %s\n", DRIVERLNAME);
-	len += sprintf(page + len, "release  : %s\n", DRIVERRELEASE_DIDD);
-	len += sprintf(page + len, "build    : %s(%s)\n",
+	seq_printf(m, "%s\n", DRIVERNAME);
+	seq_printf(m, "name     : %s\n", DRIVERLNAME);
+	seq_printf(m, "release  : %s\n", DRIVERRELEASE_DIDD);
+	seq_printf(m, "build    : %s(%s)\n",
 		       diva_didd_common_code_build, DIVA_BUILD);
-	len += sprintf(page + len, "revision : %s\n", getrev(tmprev));
-
-	if (off + count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len - off) ? count : len - off);
+	seq_printf(m, "revision : %s\n", getrev(tmprev));
+
+	return 0;
 }
 
+static int divadidd_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, divadidd_proc_show, NULL);
+}
+
+static const struct file_operations divadidd_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= divadidd_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 static int DIVA_INIT_FUNCTION create_proc(void)
 {
 	proc_net_eicon = proc_mkdir("eicon", init_net.proc_net);
 
 	if (proc_net_eicon) {
-		if ((proc_didd =
-		     create_proc_entry(DRIVERLNAME, S_IFREG | S_IRUGO,
-				       proc_net_eicon))) {
-			proc_didd->read_proc = proc_read;
-		}
+		proc_didd = proc_create(DRIVERLNAME, S_IRUGO, proc_net_eicon,
+					&divadidd_proc_fops);
 		return (1);
 	}
 	return (0);
diff --git a/drivers/isdn/hardware/eicon/divasi.c 
b/drivers/isdn/hardware/eicon/divasi.c
index 69e71eb..f577719 100644
--- a/drivers/isdn/hardware/eicon/divasi.c
+++ b/drivers/isdn/hardware/eicon/divasi.c
@@ -17,6 +17,7 @@
 #include <linux/poll.h>
 #include <linux/proc_fs.h>
 #include <linux/skbuff.h>
+#include <linux/seq_file.h>
 #include <linux/smp_lock.h>
 #include <asm/uaccess.h>
 
@@ -86,39 +87,40 @@ static void diva_um_timer_function(unsigned long data);
 extern struct proc_dir_entry *proc_net_eicon;
 static struct proc_dir_entry *um_idi_proc_entry = NULL;
 
-static int
-um_idi_proc_read(char *page, char **start, off_t off, int count, int *eof,
-		 void *data)
+static int um_idi_proc_show(struct seq_file *m, void *v)
 {
-	int len = 0;
 	char tmprev[32];
 
-	len += sprintf(page + len, "%s\n", DRIVERNAME);
-	len += sprintf(page + len, "name     : %s\n", DRIVERLNAME);
-	len += sprintf(page + len, "release  : %s\n", DRIVERRELEASE_IDI);
+	seq_printf(m, "%s\n", DRIVERNAME);
+	seq_printf(m, "name     : %s\n", DRIVERLNAME);
+	seq_printf(m, "release  : %s\n", DRIVERRELEASE_IDI);
 	strcpy(tmprev, main_revision);
-	len += sprintf(page + len, "revision : %s\n", getrev(tmprev));
-	len += sprintf(page + len, "build    : %s\n", DIVA_BUILD);
-	len += sprintf(page + len, "major    : %d\n", major);
-
-	if (off + count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len - off) ? count : len - off);
+	seq_printf(m, "revision : %s\n", getrev(tmprev));
+	seq_printf(m, "build    : %s\n", DIVA_BUILD);
+	seq_printf(m, "major    : %d\n", major);
+
+	return 0;
+}
+
+static int um_idi_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, um_idi_proc_show, NULL);
 }
 
+static const struct file_operations um_idi_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= um_idi_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 static int DIVA_INIT_FUNCTION create_um_idi_proc(void)
 {
-	um_idi_proc_entry = create_proc_entry(DRIVERLNAME,
-					      S_IFREG | S_IRUGO | S_IWUSR,
-					      proc_net_eicon);
+	um_idi_proc_entry = proc_create(DRIVERLNAME, S_IRUGO, proc_net_eicon,
+					&um_idi_proc_fops);
 	if (!um_idi_proc_entry)
 		return (0);
-
-	um_idi_proc_entry->read_proc = um_idi_proc_read;
-
 	return (1);
 }
 
diff --git a/drivers/isdn/hardware/eicon/divasproc.c 
b/drivers/isdn/hardware/eicon/divasproc.c
index 0408272..46d44a9 100644
--- a/drivers/isdn/hardware/eicon/divasproc.c
+++ b/drivers/isdn/hardware/eicon/divasproc.c
@@ -14,6 +14,7 @@
 #include <linux/kernel.h>
 #include <linux/poll.h>
 #include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/list.h>
 #include <asm/uaccess.h>
 
@@ -141,14 +142,10 @@ void remove_divas_proc(void)
 	}
 }
 
-/*
-** write group_optimization 
-*/
-static int
-write_grp_opt(struct file *file, const char __user *buffer, unsigned long 
count,
-	      void *data)
+static ssize_t grp_opt_proc_write(struct file *file, const char __user 
*buffer,
+				  size_t count, loff_t *pos)
 {
-	diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) data;
+	diva_os_xdi_adapter_t *a = PDE(file->f_path.dentry->d_inode)->data;
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 
 	if ((count == 1) || (count == 2)) {
@@ -172,14 +169,10 @@ write_grp_opt(struct file *file, const char __user 
*buffer, unsigned long count,
 	return (-EINVAL);
 }
 
-/*
-** write dynamic_l1_down
-*/
-static int
-write_d_l1_down(struct file *file, const char __user *buffer, unsigned long 
count,
-		void *data)
+static ssize_t d_l1_down_proc_write(struct file *file, const char __user 
*buffer,
+				    size_t count, loff_t *pos)
 {
-	diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) data;
+	diva_os_xdi_adapter_t *a = PDE(file->f_path.dentry->d_inode)->data;
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 
 	if ((count == 1) || (count == 2)) {
@@ -203,63 +196,62 @@ write_d_l1_down(struct file *file, const char __user 
*buffer, unsigned long coun
 	return (-EINVAL);
 }
 
-
-/*
-** read dynamic_l1_down 
-*/
-static int
-read_d_l1_down(char *page, char **start, off_t off, int count, int *eof,
-	       void *data)
+static int d_l1_down_proc_show(struct seq_file *m, void *v)
 {
-	int len = 0;
-	diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) data;
+	diva_os_xdi_adapter_t *a = m->private;
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 
-	len += sprintf(page + len, "%s\n",
+	seq_printf(m, "%s\n",
 		       (IoAdapter->capi_cfg.
 			cfg_1 & DIVA_XDI_CAPI_CFG_1_DYNAMIC_L1_ON) ? "1" :
 		       "0");
+	return 0;
+}
 
-	if (off + count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len - off) ? count : len - off);
+static int d_l1_down_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, d_l1_down_proc_show, PDE(inode)->data);
 }
 
-/*
-** read group_optimization
-*/
-static int
-read_grp_opt(char *page, char **start, off_t off, int count, int *eof,
-	     void *data)
+static const struct file_operations d_l1_down_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= d_l1_down_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+	.write		= d_l1_down_proc_write,
+};
+
+static int grp_opt_proc_show(struct seq_file *m, void *v)
 {
-	int len = 0;
-	diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) data;
+	diva_os_xdi_adapter_t *a = m->private;
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 
-	len += sprintf(page + len, "%s\n",
+	seq_printf(m, "%s\n",
 		       (IoAdapter->capi_cfg.
 			cfg_1 & DIVA_XDI_CAPI_CFG_1_GROUP_POPTIMIZATION_ON)
 		       ? "1" : "0");
+	return 0;
+}
 
-	if (off + count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len - off) ? count : len - off);
+static int grp_opt_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, grp_opt_proc_show, PDE(inode)->data);
 }
 
-/*
-** info write
-*/
-static int
-info_write(struct file *file, const char __user *buffer, unsigned long count,
-	   void *data)
+static const struct file_operations grp_opt_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= grp_opt_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+	.write		= grp_opt_proc_write,
+};
+
+static ssize_t info_proc_write(struct file *file, const char __user *buffer,
+			       size_t count, loff_t *pos)
 {
-	diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) data;
+	diva_os_xdi_adapter_t *a = PDE(file->f_path.dentry->d_inode)->data;
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 	char c[4];
 
@@ -277,63 +269,46 @@ info_write(struct file *file, const char __user *buffer, 
unsigned long count,
 	return (-EINVAL);
 }
 
-/*
-** info read
-*/
-static int
-info_read(char *page, char **start, off_t off, int count, int *eof,
-	  void *data)
+static int info_proc_show(struct seq_file *m, void *v)
 {
 	int i = 0;
-	int len = 0;
 	char *p;
 	char tmpser[16];
-	diva_os_xdi_adapter_t *a = (diva_os_xdi_adapter_t *) data;
+	diva_os_xdi_adapter_t *a = m->private;
 	PISDN_ADAPTER IoAdapter = IoAdapters[a->controller - 1];
 
-	len +=
-	    sprintf(page + len, "Name        : %s\n",
-		    IoAdapter->Properties.Name);
-	len += sprintf(page + len, "DSP state   : %08x\n", a->dsp_mask);
-	len += sprintf(page + len, "Channels    : %02d\n",
-		       IoAdapter->Properties.Channels);
-	len += sprintf(page + len, "E. max/used : %03d/%03d\n",
+	seq_printf(m, "Name        : %s\n", IoAdapter->Properties.Name);
+	seq_printf(m, "DSP state   : %08x\n", a->dsp_mask);
+	seq_printf(m, "Channels    : %02d\n", IoAdapter->Properties.Channels);
+	seq_printf(m, "E. max/used : %03d/%03d\n",
 		       IoAdapter->e_max, IoAdapter->e_count);
 	diva_get_vserial_number(IoAdapter, tmpser);
-	len += sprintf(page + len, "Serial      : %s\n", tmpser);
-	len +=
-	    sprintf(page + len, "IRQ         : %d\n",
-		    IoAdapter->irq_info.irq_nr);
-	len += sprintf(page + len, "CardIndex   : %d\n", a->CardIndex);
-	len += sprintf(page + len, "CardOrdinal : %d\n", a->CardOrdinal);
-	len += sprintf(page + len, "Controller  : %d\n", a->controller);
-	len += sprintf(page + len, "Bus-Type    : %s\n",
+	seq_printf(m, "Serial      : %s\n", tmpser);
+	seq_printf(m, "IRQ         : %d\n", IoAdapter->irq_info.irq_nr);
+	seq_printf(m, "CardIndex   : %d\n", a->CardIndex);
+	seq_printf(m, "CardOrdinal : %d\n", a->CardOrdinal);
+	seq_printf(m, "Controller  : %d\n", a->controller);
+	seq_printf(m, "Bus-Type    : %s\n",
 		       (a->Bus ==
 			DIVAS_XDI_ADAPTER_BUS_ISA) ? "ISA" : "PCI");
-	len += sprintf(page + len, "Port-Name   : %s\n", a->port_name);
+	seq_printf(m, "Port-Name   : %s\n", a->port_name);
 	if (a->Bus == DIVAS_XDI_ADAPTER_BUS_PCI) {
-		len +=
-		    sprintf(page + len, "PCI-bus     : %d\n",
-			    a->resources.pci.bus);
-		len +=
-		    sprintf(page + len, "PCI-func    : %d\n",
-			    a->resources.pci.func);
+		seq_printf(m, "PCI-bus     : %d\n", a->resources.pci.bus);
+		seq_printf(m, "PCI-func    : %d\n", a->resources.pci.func);
 		for (i = 0; i < 8; i++) {
 			if (a->resources.pci.bar[i]) {
-				len +=
-				    sprintf(page + len,
+				seq_printf(m,
 					    "Mem / I/O %d : 0x%x / mapped : 0x%lx",
 					    i, a->resources.pci.bar[i],
 					    (unsigned long) a->resources.
 					    pci.addr[i]);
 				if (a->resources.pci.length[i]) {
-					len +=
-					    sprintf(page + len,
+					seq_printf(m,
 						    " / length : %d",
 						    a->resources.pci.
 						    length[i]);
 				}
-				len += sprintf(page + len, "\n");
+				seq_putc(m, '\n');
 			}
 		}
 	}
@@ -353,16 +328,25 @@ info_read(char *page, char **start, off_t off, int 
count, int *eof,
 	} else {
 		p = "ready";
 	}
-	len += sprintf(page + len, "State       : %s\n", p);
+	seq_printf(m, "State       : %s\n", p);
 
-	if (off + count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len - off) ? count : len - off);
+	return 0;
+}
+
+static int info_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, info_proc_show, PDE(inode)->data);
 }
 
+static const struct file_operations info_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= info_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+	.write		= info_proc_write,
+};
+
 /*
 ** adapter proc init/de-init
 */
@@ -380,28 +364,20 @@ int create_adapter_proc(diva_os_xdi_adapter_t * a)
 		return (0);
 	a->proc_adapter_dir = (void *) de;
 
-	if (!(pe =
-	     create_proc_entry(info_proc_name, S_IFREG | S_IRUGO | S_IWUSR, de)))
+	pe = proc_create_data(info_proc_name, S_IRUGO | S_IWUSR, de,
+			      &info_proc_fops, a);
+	if (!pe)
 		return (0);
 	a->proc_info = (void *) pe;
-	pe->write_proc = info_write;
-	pe->read_proc = info_read;
-	pe->data = a;
 
-	if ((pe = create_proc_entry(grp_opt_proc_name,
-			       S_IFREG | S_IRUGO | S_IWUSR, de))) {
+	pe = proc_create_data(grp_opt_proc_name, S_IRUGO | S_IWUSR, de,
+			      &grp_opt_proc_fops, a);
+	if (pe)
 		a->proc_grp_opt = (void *) pe;
-		pe->write_proc = write_grp_opt;
-		pe->read_proc = read_grp_opt;
-		pe->data = a;
-	}
-	if ((pe = create_proc_entry(d_l1_down_proc_name,
-			       S_IFREG | S_IRUGO | S_IWUSR, de))) {
+	pe = proc_create_data(d_l1_down_proc_name, S_IRUGO | S_IWUSR, de,
+			      &d_l1_down_proc_fops, a);
+	if (pe)
 		a->proc_d_l1_down = (void *) pe;
-		pe->write_proc = write_d_l1_down;
-		pe->read_proc = read_d_l1_down;
-		pe->data = a;
-	}
 
 	DBG_TRC(("proc entry %s created", tmp));
 
diff --git a/drivers/isdn/hysdn/hycapi.c b/drivers/isdn/hysdn/hycapi.c
index 4ffaa14..fe874af 100644
--- a/drivers/isdn/hysdn/hycapi.c
+++ b/drivers/isdn/hysdn/hycapi.c
@@ -11,6 +11,8 @@
  */
 
 #include <linux/module.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/signal.h>
 #include <linux/kernel.h>
 #include <linux/skbuff.h>
@@ -432,26 +434,16 @@ static u16 hycapi_send_message(struct capi_ctr *ctrl, 
struct sk_buff *skb)
 	return retval;
 }
 
-/*********************************************************************
-hycapi_read_proc
-
-Informations provided in the /proc/capi-entries.
-
-*********************************************************************/
-
-static int hycapi_read_proc(char *page, char **start, off_t off,
-			    int count, int *eof, struct capi_ctr *ctrl)
+static int hycapi_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctrl = m->private;
 	hycapictrl_info *cinfo = (hycapictrl_info *)(ctrl->driverdata);
 	hysdn_card *card = cinfo->card;
-	int len = 0;
 	char *s;
-#ifdef HYCAPI_PRINTFNAMES
-	printk(KERN_NOTICE "hycapi_read_proc\n");    
-#endif
-	len += sprintf(page+len, "%-16s %s\n", "name", cinfo->cardname);
-	len += sprintf(page+len, "%-16s 0x%x\n", "io", card->iobase);
-	len += sprintf(page+len, "%-16s %d\n", "irq", card->irq);
+
+	seq_printf(m, "%-16s %s\n", "name", cinfo->cardname);
+	seq_printf(m, "%-16s 0x%x\n", "io", card->iobase);
+	seq_printf(m, "%-16s %d\n", "irq", card->irq);
     
 	switch (card->brdtype) {
 		case BD_PCCARD:  s = "HYSDN Hycard"; break;
@@ -461,24 +453,32 @@ static int hycapi_read_proc(char *page, char **start, 
off_t off,
 		case BD_PLEXUS: s = "HYSDN Plexus30"; break;
 		default: s = "???"; break;
 	}
-	len += sprintf(page+len, "%-16s %s\n", "type", s);
+	seq_printf(m, "%-16s %s\n", "type", s);
 	if ((s = cinfo->version[VER_DRIVER]) != NULL)
-		len += sprintf(page+len, "%-16s %s\n", "ver_driver", s);
+		seq_printf(m, "%-16s %s\n", "ver_driver", s);
 	if ((s = cinfo->version[VER_CARDTYPE]) != NULL)
-		len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s);
+		seq_printf(m, "%-16s %s\n", "ver_cardtype", s);
 	if ((s = cinfo->version[VER_SERIAL]) != NULL)
-		len += sprintf(page+len, "%-16s %s\n", "ver_serial", s);
+		seq_printf(m, "%-16s %s\n", "ver_serial", s);
     
-	len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname);
+	seq_printf(m, "%-16s %s\n", "cardname", cinfo->cardname);
     
-	if (off+count >= len)
-		*eof = 1;
-	if (len < off)
-		return 0;
-	*start = page + off;
-	return ((count < len-off) ? count : len-off);
+	return 0;
+}
+
+static int hycapi_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, hycapi_proc_show, PDE(inode)->data);
 }
 
+static const struct file_operations hycapi_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= hycapi_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 /**************************************************************
 hycapi_load_firmware
 
@@ -774,7 +774,7 @@ hycapi_capi_create(hysdn_card *card)
 		ctrl->load_firmware = hycapi_load_firmware;
 		ctrl->reset_ctr     = hycapi_reset_ctr;
 		ctrl->procinfo      = hycapi_procinfo;
-		ctrl->ctr_read_proc = hycapi_read_proc;
+		ctrl->proc_fops = &hycapi_proc_fops;
 		strcpy(ctrl->name, cinfo->cardname);
 		ctrl->owner = THIS_MODULE;
 
diff --git a/include/linux/isdn/capilli.h b/include/linux/isdn/capilli.h
index 7acb87a..d3e5e9d 100644
--- a/include/linux/isdn/capilli.h
+++ b/include/linux/isdn/capilli.h
@@ -50,8 +50,7 @@ struct capi_ctr {
 	u16  (*send_message)(struct capi_ctr *, struct sk_buff *skb);
 	
 	char *(*procinfo)(struct capi_ctr *);
-	int (*ctr_read_proc)(char *page, char **start, off_t off,
-			     int count, int *eof, struct capi_ctr *card);
+	const struct file_operations *proc_fops;
 
 	/* filled in before calling ready callback */
 	u8 manu[CAPI_MANUFACTURER_LEN];		/* CAPI_GET_MANUFACTURER */
diff --git a/net/bluetooth/cmtp/capi.c b/net/bluetooth/cmtp/capi.c
index 97f8d68..3487cfe 100644
--- a/net/bluetooth/cmtp/capi.c
+++ b/net/bluetooth/cmtp/capi.c
@@ -21,7 +21,8 @@
 */
 
 #include <linux/module.h>
-
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
@@ -516,33 +517,37 @@ static char *cmtp_procinfo(struct capi_ctr *ctrl)
 	return "CAPI Message Transport Protocol";
 }
 
-static int cmtp_ctr_read_proc(char *page, char **start, off_t off, int count, 
int *eof, struct capi_ctr *ctrl)
+static int cmtp_proc_show(struct seq_file *m, void *v)
 {
+	struct capi_ctr *ctrl = m->private;
 	struct cmtp_session *session = ctrl->driverdata;
 	struct cmtp_application *app;
 	struct list_head *p, *n;
-	int len = 0;
 
-	len += sprintf(page + len, "%s\n\n", cmtp_procinfo(ctrl));
-	len += sprintf(page + len, "addr %s\n", session->name);
-	len += sprintf(page + len, "ctrl %d\n", session->num);
+	seq_printf(m, "%s\n\n", cmtp_procinfo(ctrl));
+	seq_printf(m, "addr %s\n", session->name);
+	seq_printf(m, "ctrl %d\n", session->num);
 
 	list_for_each_safe(p, n, &session->applications) {
 		app = list_entry(p, struct cmtp_application, list);
-		len += sprintf(page + len, "appl %d -> %d\n", app->appl, app->mapping);
+		seq_printf(m, "appl %d -> %d\n", app->appl, app->mapping);
 	}
 
-	if (off + count >= len)
-		*eof = 1;
-
-	if (len < off)
-		return 0;
-
-	*start = page + off;
+	return 0;
+}
 
-	return ((count < len - off) ? count : len - off);
+static int cmtp_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, cmtp_proc_show, PDE(inode)->data);
 }
 
+static const struct file_operations cmtp_proc_fops = {
+	.owner		= THIS_MODULE,
+	.open		= cmtp_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
 
 int cmtp_attach_device(struct cmtp_session *session)
 {
@@ -582,7 +587,7 @@ int cmtp_attach_device(struct cmtp_session *session)
 	session->ctrl.send_message  = cmtp_send_message;
 
 	session->ctrl.procinfo      = cmtp_procinfo;
-	session->ctrl.ctr_read_proc = cmtp_ctr_read_proc;
+	session->ctrl.proc_fops = &cmtp_proc_fops;
 
 	if (attach_capi_ctr(&session->ctrl) < 0) {
 		BT_ERR("Can't attach new controller");
-- 
1.6.0.2


^ permalink raw reply related	[flat|nested] 13+ messages in thread

* Re: [ISDN] proc_fops: convert drivers/isdn/ to seq_file
  2010-01-14  1:37         ` [ISDN] " Karsten Keil
@ 2010-01-14  1:53           ` David Miller
  2010-01-14  2:39             ` Karsten Keil
  2010-01-14  4:29           ` David Miller
  1 sibling, 1 reply; 13+ messages in thread
From: David Miller @ 2010-01-14  1:53 UTC (permalink / raw)
  To: keil; +Cc: tilman, adobriyan, akpm, netdev


Your email client is clipping long lines, corrupting the patch
and even the diffstat.

Please fix this up and resubmit, thanks.

^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [ISDN] proc_fops: convert drivers/isdn/ to seq_file
  2010-01-14  1:53           ` David Miller
@ 2010-01-14  2:39             ` Karsten Keil
  2010-01-14  2:43               ` David Miller
  0 siblings, 1 reply; 13+ messages in thread
From: Karsten Keil @ 2010-01-14  2:39 UTC (permalink / raw)
  To: David Miller; +Cc: tilman, adobriyan, akpm, netdev

On Donnerstag, 14. Januar 2010 02:53:04 David Miller wrote:
> Your email client is clipping long lines, corrupting the patch
> and even the diffstat.
> 
> Please fix this up and resubmit, thanks.
> 
Sorry, sent it to you again (to not spam the others, since the patch was 
already send several times).

Karsten

^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [ISDN] proc_fops: convert drivers/isdn/ to seq_file
  2010-01-14  2:39             ` Karsten Keil
@ 2010-01-14  2:43               ` David Miller
  0 siblings, 0 replies; 13+ messages in thread
From: David Miller @ 2010-01-14  2:43 UTC (permalink / raw)
  To: keil; +Cc: tilman, adobriyan, akpm, netdev

From: Karsten Keil <keil@b1-systems.de>
Date: Thu, 14 Jan 2010 03:39:26 +0100

> On Donnerstag, 14. Januar 2010 02:53:04 David Miller wrote:
>> Your email client is clipping long lines, corrupting the patch
>> and even the diffstat.
>> 
>> Please fix this up and resubmit, thanks.
>> 
> Sorry, sent it to you again (to not spam the others, since the patch was 
> already send several times).

Karsten, you have to CC: the others and the list.

That's how it gets tracked properly in patchwork.

And that's how I can reply to the posting of the patch
I actually applied, so there is a record of that too.

^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [ISDN] proc_fops: convert drivers/isdn/ to seq_file
  2010-01-14  1:37         ` [ISDN] " Karsten Keil
  2010-01-14  1:53           ` David Miller
@ 2010-01-14  4:29           ` David Miller
  2010-01-14 11:01             ` David Miller
  1 sibling, 1 reply; 13+ messages in thread
From: David Miller @ 2010-01-14  4:29 UTC (permalink / raw)
  To: keil; +Cc: tilman, adobriyan, akpm, netdev

From: Karsten Keil <keil@b1-systems.de>
Date: Thu, 14 Jan 2010 02:37:07 +0100

>  drivers/isdn/hardware/eicon/divasproc.c |  198 
> ++++++++++++++-----------------

Long lines broken up, again...

^ permalink raw reply	[flat|nested] 13+ messages in thread

* Re: [ISDN] proc_fops: convert drivers/isdn/ to seq_file
  2010-01-14  4:29           ` David Miller
@ 2010-01-14 11:01             ` David Miller
  0 siblings, 0 replies; 13+ messages in thread
From: David Miller @ 2010-01-14 11:01 UTC (permalink / raw)
  To: keil; +Cc: tilman, adobriyan, akpm, netdev

From: David Miller <davem@davemloft.net>
Date: Wed, 13 Jan 2010 20:29:52 -0800 (PST)

> From: Karsten Keil <keil@b1-systems.de>
> Date: Thu, 14 Jan 2010 02:37:07 +0100
> 
>>  drivers/isdn/hardware/eicon/divasproc.c |  198 
>> ++++++++++++++-----------------
> 
> Long lines broken up, again...

And just in case there is any confusion.

Take a look at:

	http://patchwork.ozlabs.org/patch/42844/

That patch is mangled, and that's what Karsten sent to the list.

Diff hunk header lines that quote the function which is being modified
are chopped up into multiple lines:

--------------------
@@ -2229,59 +2230,37 @@ static void lower_callback(unsigned int cmd, u32 
contr, void *data)
--------------------

That is corrupted, and it won't apply.  And that's what landed in my
mailbox for Karsten's posting too, so it's not like patchwork put that
newline there.

The amount of time and effort being expended for this trivial patch
submission is staggering!


^ permalink raw reply	[flat|nested] 13+ messages in thread

end of thread, other threads:[~2010-01-14 11:01 UTC | newest]

Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2009-12-22  0:25 [patch 1/2] proc_fops: convert drivers/isdn/ to seq_file akpm
2009-12-23 12:30 ` Tilman Schmidt
2010-01-05 21:19   ` Alexey Dobriyan
2010-01-10 18:42     ` Tilman Schmidt
2010-01-10 21:29       ` David Miller
2010-01-10 23:33         ` Karsten Keil
2010-01-14  1:37         ` [ISDN] " Karsten Keil
2010-01-14  1:53           ` David Miller
2010-01-14  2:39             ` Karsten Keil
2010-01-14  2:43               ` David Miller
2010-01-14  4:29           ` David Miller
2010-01-14 11:01             ` David Miller
2010-01-04  5:26 ` [patch 1/2] " David Miller

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