From: Alexey Dobriyan <adobriyan@gmail.com>
To: akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 04/17] proc tty: switch istallion to ->proc_fops
Date: Thu, 29 Jan 2009 20:49:54 +0300 [thread overview]
Message-ID: <20090129174954.GD21643@x200.localdomain> (raw)
In-Reply-To: <20090129174830.GA21643@x200.localdomain>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---
drivers/char/istallion.c | 121 ++++++++++++++++++++--------------------------
1 files changed, 52 insertions(+), 69 deletions(-)
diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c
index 5c3dc6b..fff19f7 100644
--- a/drivers/char/istallion.c
+++ b/drivers/char/istallion.c
@@ -24,6 +24,7 @@
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/serial.h>
+#include <linux/seq_file.h>
#include <linux/cdk.h>
#include <linux/comstats.h>
#include <linux/istallion.h>
@@ -613,7 +614,6 @@ static int stli_breakctl(struct tty_struct *tty, int state);
static void stli_waituntilsent(struct tty_struct *tty, int timeout);
static void stli_sendxchar(struct tty_struct *tty, char ch);
static void stli_hangup(struct tty_struct *tty);
-static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos);
static int stli_brdinit(struct stlibrd *brdp);
static int stli_startbrd(struct stlibrd *brdp);
@@ -1893,20 +1893,10 @@ static void stli_sendxchar(struct tty_struct *tty, char ch)
stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0);
}
-/*****************************************************************************/
-
-#define MAXLINE 80
-
-/*
- * Format info for a specified port. The line is deliberately limited
- * to 80 characters. (If it is too long it will be truncated, if too
- * short then padded with spaces).
- */
-
-static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos)
+static void stli_portinfo(struct seq_file *m, struct stlibrd *brdp, struct stliport *portp, int portnr)
{
- char *sp, *uart;
- int rc, cnt;
+ char *uart;
+ int rc;
rc = stli_portcmdstats(NULL, portp);
@@ -1918,44 +1908,50 @@ static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portn
default:uart = "CD1400"; break;
}
}
-
- sp = pos;
- sp += sprintf(sp, "%d: uart:%s ", portnr, uart);
+ seq_printf(m, "%d: uart:%s ", portnr, uart);
if ((brdp->state & BST_STARTED) && (rc >= 0)) {
- sp += sprintf(sp, "tx:%d rx:%d", (int) stli_comstats.txtotal,
+ char sep;
+
+ seq_printf(m, "tx:%d rx:%d", (int) stli_comstats.txtotal,
(int) stli_comstats.rxtotal);
if (stli_comstats.rxframing)
- sp += sprintf(sp, " fe:%d",
+ seq_printf(m, " fe:%d",
(int) stli_comstats.rxframing);
if (stli_comstats.rxparity)
- sp += sprintf(sp, " pe:%d",
+ seq_printf(m, " pe:%d",
(int) stli_comstats.rxparity);
if (stli_comstats.rxbreaks)
- sp += sprintf(sp, " brk:%d",
+ seq_printf(m, " brk:%d",
(int) stli_comstats.rxbreaks);
if (stli_comstats.rxoverrun)
- sp += sprintf(sp, " oe:%d",
+ seq_printf(m, " oe:%d",
(int) stli_comstats.rxoverrun);
- cnt = sprintf(sp, "%s%s%s%s%s ",
- (stli_comstats.signals & TIOCM_RTS) ? "|RTS" : "",
- (stli_comstats.signals & TIOCM_CTS) ? "|CTS" : "",
- (stli_comstats.signals & TIOCM_DTR) ? "|DTR" : "",
- (stli_comstats.signals & TIOCM_CD) ? "|DCD" : "",
- (stli_comstats.signals & TIOCM_DSR) ? "|DSR" : "");
- *sp = ' ';
- sp += cnt;
+ sep = ' ';
+ if (stli_comstats.signals & TIOCM_RTS) {
+ seq_printf(m, "%c%s", sep, "RTS");
+ sep = '|';
+ }
+ if (stli_comstats.signals & TIOCM_CTS) {
+ seq_printf(m, "%c%s", sep, "CTS");
+ sep = '|';
+ }
+ if (stli_comstats.signals & TIOCM_DTR) {
+ seq_printf(m, "%c%s", sep, "DTR");
+ sep = '|';
+ }
+ if (stli_comstats.signals & TIOCM_CD) {
+ seq_printf(m, "%c%s", sep, "DCD");
+ sep = '|';
+ }
+ if (stli_comstats.signals & TIOCM_DSR) {
+ seq_printf(m, "%c%s", sep, "DSR");
+ sep = '|';
+ }
}
-
- for (cnt = (sp - pos); (cnt < (MAXLINE - 1)); cnt++)
- *sp++ = ' ';
- if (cnt >= MAXLINE)
- pos[(MAXLINE - 2)] = '+';
- pos[(MAXLINE - 1)] = '\n';
-
- return(MAXLINE);
+ seq_putc(m, '\n');
}
/*****************************************************************************/
@@ -1964,26 +1960,15 @@ static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portn
* Port info, read from the /proc file system.
*/
-static int stli_readproc(char *page, char **start, off_t off, int count, int *eof, void *data)
+static int stli_proc_show(struct seq_file *m, void *v)
{
struct stlibrd *brdp;
struct stliport *portp;
unsigned int brdnr, portnr, totalport;
- int curoff, maxoff;
- char *pos;
- pos = page;
totalport = 0;
- curoff = 0;
-
- if (off == 0) {
- pos += sprintf(pos, "%s: version %s", stli_drvtitle,
- stli_drvversion);
- while (pos < (page + MAXLINE - 1))
- *pos++ = ' ';
- *pos++ = '\n';
- }
- curoff = MAXLINE;
+
+ seq_printf(m, "%s: version %s\n", stli_drvtitle, stli_drvversion);
/*
* We scan through for each board, panel and port. The offset is
@@ -1996,33 +1981,31 @@ static int stli_readproc(char *page, char **start, off_t off, int count, int *eo
if (brdp->state == 0)
continue;
- maxoff = curoff + (brdp->nrports * MAXLINE);
- if (off >= maxoff) {
- curoff = maxoff;
- continue;
- }
-
totalport = brdnr * STL_MAXPORTS;
for (portnr = 0; (portnr < brdp->nrports); portnr++,
totalport++) {
portp = brdp->ports[portnr];
if (portp == NULL)
continue;
- if (off >= (curoff += MAXLINE))
- continue;
- if ((pos - page + MAXLINE) > count)
- goto stli_readdone;
- pos += stli_portinfo(brdp, portp, totalport, pos);
+ stli_portinfo(m, brdp, portp, totalport);
}
}
+ return 0;
+}
- *eof = 1;
-
-stli_readdone:
- *start = page;
- return(pos - page);
+static int stli_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, stli_proc_show, NULL);
}
+static const struct file_operations stli_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = stli_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
/*****************************************************************************/
/*
@@ -4427,9 +4410,9 @@ static const struct tty_operations stli_ops = {
.break_ctl = stli_breakctl,
.wait_until_sent = stli_waituntilsent,
.send_xchar = stli_sendxchar,
- .read_proc = stli_readproc,
.tiocmget = stli_tiocmget,
.tiocmset = stli_tiocmset,
+ .proc_fops = &stli_proc_fops,
};
static const struct tty_port_operations stli_port_ops = {
--
1.5.6.5
next prev parent reply other threads:[~2009-01-29 17:44 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-29 17:48 [PATCH 01/17] proc tty: add struct tty_operations::proc_fops Alexey Dobriyan
2009-01-29 17:49 ` [PATCH 02/17] proc tty: switch cyclades to ->proc_fops Alexey Dobriyan
2009-01-29 17:49 ` [PATCH 03/17] proc tty: switch ip2 " Alexey Dobriyan
2009-01-29 17:49 ` Alexey Dobriyan [this message]
2009-01-29 17:50 ` [PATCH 05/17] proc tty: switch synclink_cs " Alexey Dobriyan
2009-01-29 17:50 ` [PATCH 06/17] proc tty: switch stallion " Alexey Dobriyan
2009-01-29 17:50 ` [PATCH 07/17] proc tty: switch synclink " Alexey Dobriyan
2009-01-29 17:51 ` [PATCH 08/17] proc tty: switch synclink_gt " Alexey Dobriyan
2009-01-29 17:51 ` [PATCH 09/17] proc tty: switch synclinkmp " Alexey Dobriyan
2009-01-29 17:53 ` [PATCH 10/17] proc tty: switch sdio_uart " Alexey Dobriyan
2009-01-29 17:53 ` [PATCH 11/17] proc tty: switch serial_core " Alexey Dobriyan
2009-01-29 17:54 ` [PATCH 12/17] proc tty: switch usb-serial " Alexey Dobriyan
2009-01-29 17:54 ` [PATCH 13/17] proc tty: switch ircomm " Alexey Dobriyan
2009-01-29 17:54 ` [PATCH 14/17] proc tty: switch amiserial " Alexey Dobriyan
2009-01-29 17:55 ` [PATCH 15/17] proc tty: switch ia64 simserial " Alexey Dobriyan
2009-01-29 17:55 ` [PATCH 16/17] proc tty: switch xtensa iss console " Alexey Dobriyan
2009-01-29 17:55 ` [PATCH 17/17] proc tty: remove struct tty_operations::read_proc Alexey Dobriyan
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