Can we remove pci_find_device() yet?

Can we remove pci_find_device() yet?

[Stephen Rothwell]

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Hi all,

This interface has been deprecated since November 2006, so can something
be done about the last users (I think only some ISDN drivers)?  Or should
we just remove the interface and mark those drivers BROKEN (and maybe
move them to staging)?

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

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Re: Can we remove pci_find_device() yet?

[Greg KH]

On Fri, Jan 08, 2010 at 11:22:36AM +1100, Stephen Rothwell wrote:
> Hi all,
> 
> This interface has been deprecated since November 2006, so can something
> be done about the last users (I think only some ISDN drivers)?  Or should
> we just remove the interface and mark those drivers BROKEN (and maybe
> move them to staging)?

Ick, the "new" isdn drivers are still not merged that replace those
older ones?  I thought that happened a while ago.  Karsten, what are you
plans on dropping them?

I recommend putting them in staging if you want a way to get them out of
the kernel tree :)

thanks,

greg k-h

Re: Can we remove pci_find_device() yet?

[Tilman Schmidt]

Am 08.01.2010 05:46 schrieb Greg KH:
> On Fri, Jan 08, 2010 at 11:22:36AM +1100, Stephen Rothwell wrote:
>>
>> This interface has been deprecated since November 2006, so can something
>> be done about the last users (I think only some ISDN drivers)?

That would be the HiSax I4L drivers.

> Ick, the "new" isdn drivers are still not merged that replace those
> older ones?  I thought that happened a while ago.

mISDN, which is the designated successor to HiSax, has indeed been
merged in 2008.

Trouble is, mISDN's userspace interface is completely different from I4L.
Removing HiSax would therefore break userspace compatibility for current
users of HiSax supported devices. In order to switch to mISDN they'll
have to replace all of their ISDN4Linux applications with equivalent
mISDN ones, and I'm not even sure there is a replacement for everything.

Just an idea - as a stopgap measure, couldn't pci_find_device() be made
a private function of the HiSax drivers? That way, the remainder of the
kernel won't be polluted by it anymore, and the PCI_LEGACY config option
can be dropped. Something like this quick and dirty hack:

diff --git a/drivers/isdn/hisax/Kconfig b/drivers/isdn/hisax/Kconfig
index 3464ebc..452fde9 100644
--- a/drivers/isdn/hisax/Kconfig
+++ b/drivers/isdn/hisax/Kconfig
@@ -109,7 +109,7 @@ config HISAX_16_3
 
 config HISAX_TELESPCI
 	bool "Teles PCI"
-	depends on PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the Teles PCI.
 	  See <file:Documentation/isdn/README.HiSax> on how to configure it.
@@ -237,7 +237,7 @@ config HISAX_MIC
 
 config HISAX_NETJET
 	bool "NETjet card"
-	depends on PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the NetJet from Traverse
 	  Technologies.
@@ -248,7 +248,7 @@ config HISAX_NETJET
 
 config HISAX_NETJET_U
 	bool "NETspider U card"
-	depends on PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the Netspider U interface ISDN card
 	  from Traverse Technologies.
@@ -287,7 +287,7 @@ config HISAX_HSTSAPHIR
 
 config HISAX_BKM_A4T
 	bool "Telekom A4T card"
-	depends on PCI && PCI_LEGACY
+	depends on PCI
 	help
 	  This enables HiSax support for the Telekom A4T card.
 
@@ -297,7 +297,7 @@ config HISAX_BKM_A4T
 
 config HISAX_SCT_QUADRO
 	bool "Scitel Quadro card"
-	depends on PCI && PCI_LEGACY
+	depends on PCI
 	help
 	  This enables HiSax support for the Scitel Quadro card.
 
@@ -316,7 +316,7 @@ config HISAX_GAZEL
 
 config HISAX_HFC_PCI
 	bool "HFC PCI-Bus cards"
-	depends on PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the HFC-S PCI 2BDS0 based cards.
 
@@ -325,7 +325,7 @@ config HISAX_HFC_PCI
 
 config HISAX_W6692
 	bool "Winbond W6692 based cards"
-	depends on PCI && PCI_LEGACY
+	depends on PCI
 	help
 	  This enables HiSax support for Winbond W6692 based PCI ISDN cards.
 
@@ -341,7 +341,7 @@ config HISAX_HFC_SX
 
 config HISAX_ENTERNOW_PCI
 	bool "Formula-n enter:now PCI card"
-	depends on HISAX_NETJET && PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on HISAX_NETJET && PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the Formula-n enter:now PCI
 	  ISDN card.
@@ -412,7 +412,7 @@ config HISAX_HFC4S8S
 
 config HISAX_FRITZ_PCIPNP
 	tristate "AVM Fritz!Card PCI/PCIv2/PnP support (EXPERIMENTAL)"
-	depends on PCI && PCI_LEGACY && EXPERIMENTAL
+	depends on PCI && EXPERIMENTAL
 	help
 	  This enables the driver for the AVM Fritz!Card PCI,
 	  Fritz!Card PCI v2 and Fritz!Card PnP.
diff --git a/drivers/isdn/hisax/avm_pci.c b/drivers/isdn/hisax/avm_pci.c
index 7cabc5a..f8d21a0 100644
--- a/drivers/isdn/hisax/avm_pci.c
+++ b/drivers/isdn/hisax/avm_pci.c
@@ -822,15 +822,6 @@ static int __devinit avm_pnp_setup(struct IsdnCardState *cs)
 
 #endif /* __ISAPNP__ */
 
-#ifndef CONFIG_PCI_LEGACY
-
-static int __devinit avm_pci_setup(struct IsdnCardState *cs)
-{
-	return(1);	/* no-op: success */
-}
-
-#else
-
 static struct pci_dev *dev_avm __devinitdata = NULL;
 
 static int __devinit avm_pci_setup(struct IsdnCardState *cs)
@@ -864,8 +855,6 @@ static int __devinit avm_pci_setup(struct IsdnCardState *cs)
 	return (1);
 }
 
-#endif /* CONFIG_PCI_LEGACY */
-
 int __devinit
 setup_avm_pcipnp(struct IsdnCard *card)
 {
diff --git a/drivers/isdn/hisax/diva.c b/drivers/isdn/hisax/diva.c
index 0b0c2e5..830ad46 100644
--- a/drivers/isdn/hisax/diva.c
+++ b/drivers/isdn/hisax/diva.c
@@ -1148,7 +1148,6 @@ static int __devinit setup_diva_isapnp(struct IsdnCard *card)
 
 #endif	/* ISAPNP */
 
-#ifdef CONFIG_PCI_LEGACY
 static struct pci_dev *dev_diva __devinitdata = NULL;
 static struct pci_dev *dev_diva_u __devinitdata = NULL;
 static struct pci_dev *dev_diva201 __devinitdata = NULL;
@@ -1229,15 +1228,6 @@ static int __devinit setup_diva_pci(struct IsdnCard *card)
 	return (1);		/* card found */
 }
 
-#else	/* if !CONFIG_PCI_LEGACY */
-
-static int __devinit setup_diva_pci(struct IsdnCard *card)
-{
-	return (-1);	/* card not found; continue search */
-}
-
-#endif	/* CONFIG_PCI_LEGACY */
-
 int __devinit
 setup_diva(struct IsdnCard *card)
 {
diff --git a/drivers/isdn/hisax/elsa.c b/drivers/isdn/hisax/elsa.c
index aa29d1c..28f6620 100644
--- a/drivers/isdn/hisax/elsa.c
+++ b/drivers/isdn/hisax/elsa.c
@@ -1025,7 +1025,6 @@ setup_elsa_pcmcia(struct IsdnCard *card)
 	       cs->irq);
 }
 
-#ifdef CONFIG_PCI_LEGACY
 static 	struct pci_dev *dev_qs1000 __devinitdata = NULL;
 static 	struct pci_dev *dev_qs3000 __devinitdata = NULL;
 
@@ -1086,15 +1085,6 @@ setup_elsa_pci(struct IsdnCard *card)
 	return (1);
 }
 
-#else
-
-static int __devinit
-setup_elsa_pci(struct IsdnCard *card)
-{
-	return (1);
-}
-#endif /* CONFIG_PCI_LEGACY */
-
 static int __devinit
 setup_elsa_common(struct IsdnCard *card)
 {
diff --git a/drivers/isdn/hisax/gazel.c b/drivers/isdn/hisax/gazel.c
index 0ea3b46..c25f455 100644
--- a/drivers/isdn/hisax/gazel.c
+++ b/drivers/isdn/hisax/gazel.c
@@ -531,7 +531,6 @@ setup_gazelisa(struct IsdnCard *card, struct IsdnCardState *cs)
 	return (0);
 }
 
-#ifdef CONFIG_PCI_LEGACY
 static struct pci_dev *dev_tel __devinitdata = NULL;
 
 static int __devinit
@@ -620,7 +619,6 @@ setup_gazelpci(struct IsdnCardState *cs)
 
 	return (0);
 }
-#endif /* CONFIG_PCI_LEGACY */
 
 int __devinit
 setup_gazel(struct IsdnCard *card)
@@ -639,14 +637,8 @@ setup_gazel(struct IsdnCard *card)
 		if (setup_gazelisa(card, cs))
 			return (0);
 	} else {
-
-#ifdef CONFIG_PCI_LEGACY
 		if (setup_gazelpci(cs))
 			return (0);
-#else
-		printk(KERN_WARNING "Gazel: Card PCI requested and NO_PCI_BIOS, unable to config\n");
-		return (0);
-#endif				/* CONFIG_PCI */
 	}
 
 	if (reserve_regions(card, cs)) {
diff --git a/drivers/isdn/hisax/hisax.h b/drivers/isdn/hisax/hisax.h
index 0685c19..63c8359 100644
--- a/drivers/isdn/hisax/hisax.h
+++ b/drivers/isdn/hisax/hisax.h
@@ -1323,3 +1323,22 @@ void release_tei(struct IsdnCardState *cs);
 char *HiSax_getrev(const char *revision);
 int TeiNew(void);
 void TeiFree(void);
+
+#ifdef CONFIG_PCI
+
+#include <linux/pci.h>
+
+/* FIXME */
+static inline struct pci_dev *pci_find_device(unsigned int vendor,
+					      unsigned int device,
+					      struct pci_dev *from)
+{
+	struct pci_dev *pdev;
+
+	pci_dev_get(from);
+	pdev = pci_get_subsys(vendor, device, PCI_ANY_ID, PCI_ANY_ID, from);
+	pci_dev_put(pdev);
+	return pdev;
+}
+
+#endif
diff --git a/drivers/isdn/hisax/niccy.c b/drivers/isdn/hisax/niccy.c
index ef00633..13922f6 100644
--- a/drivers/isdn/hisax/niccy.c
+++ b/drivers/isdn/hisax/niccy.c
@@ -297,7 +297,6 @@ int __devinit setup_niccy(struct IsdnCard *card)
 			return 0;
 		}
 	} else {
-#ifdef CONFIG_PCI_LEGACY
 		static struct pci_dev *niccy_dev __devinitdata;
 
 		u_int pci_ioaddr;
@@ -350,11 +349,6 @@ int __devinit setup_niccy(struct IsdnCard *card)
 			release_region(cs->hw.niccy.isac, 4);
 			return 0;
 		}
-#else
-		printk(KERN_WARNING "Niccy: io0 0 and NO_PCI_BIOS\n");
-		printk(KERN_WARNING "Niccy: unable to config NICCY PCI\n");
-		return 0;
-#endif				/* CONFIG_PCI_LEGACY */
 	}
 	printk(KERN_INFO "HiSax: NICCY %s config irq:%d data:0x%X ale:0x%X\n",
 		(cs->subtyp == 1) ? "PnP" : "PCI",
diff --git a/drivers/isdn/hisax/sedlbauer.c b/drivers/isdn/hisax/sedlbauer.c
index 5569a52..5cdcb0d 100644
--- a/drivers/isdn/hisax/sedlbauer.c
+++ b/drivers/isdn/hisax/sedlbauer.c
@@ -598,7 +598,6 @@ setup_sedlbauer_isapnp(struct IsdnCard *card, int *bytecnt)
 }
 #endif /* __ISAPNP__ */
 
-#ifdef CONFIG_PCI_LEGACY
 static struct pci_dev *dev_sedl __devinitdata = NULL;
 
 static int __devinit
@@ -665,16 +664,6 @@ setup_sedlbauer_pci(struct IsdnCard *card)
 	return (1);
 }
 
-#else
-
-static int __devinit
-setup_sedlbauer_pci(struct IsdnCard *card)
-{
-	return (1);
-}
-
-#endif /* CONFIG_PCI_LEGACY */
-
 int __devinit
 setup_sedlbauer(struct IsdnCard *card)
 {
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index b1ecefa..7858a11 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -21,17 +21,6 @@ config PCI_MSI
 
 	   If you don't know what to do here, say N.
 
-config PCI_LEGACY
-	bool "Enable deprecated pci_find_* API"
-	depends on PCI
-	default y
-	help
-	  Say Y here if you want to include support for the deprecated
-	  pci_find_device() API.  Most drivers have been converted over
-	  to using the proper hotplug APIs, so this option serves to
-	  include/exclude only a few drivers that are still using this
-	  API.
-
 config PCI_DEBUG
 	bool "PCI Debugging"
 	depends on PCI && DEBUG_KERNEL
diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index 4df48d5..f635608 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -8,9 +8,6 @@ obj-y		+= access.o bus.o probe.o remove.o pci.o quirks.o \
 obj-$(CONFIG_PROC_FS) += proc.o
 obj-$(CONFIG_SYSFS) += slot.o
 
-obj-$(CONFIG_PCI_LEGACY) += legacy.o
-CFLAGS_legacy.o += -Wno-deprecated-declarations
-
 # Build PCI Express stuff if needed
 obj-$(CONFIG_PCIEPORTBUS) += pcie/
 
diff --git a/drivers/pci/legacy.c b/drivers/pci/legacy.c
deleted file mode 100644
index 871f65c..0000000
--- a/drivers/pci/legacy.c
+++ /dev/null
@@ -1,34 +0,0 @@
-#include <linux/init.h>
-#include <linux/pci.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include "pci.h"
-
-/**
- * pci_find_device - begin or continue searching for a PCI device by vendor/device id
- * @vendor: PCI vendor id to match, or %PCI_ANY_ID to match all vendor ids
- * @device: PCI device id to match, or %PCI_ANY_ID to match all device ids
- * @from: Previous PCI device found in search, or %NULL for new search.
- *
- * Iterates through the list of known PCI devices.  If a PCI device is found
- * with a matching @vendor and @device, a pointer to its device structure is
- * returned.  Otherwise, %NULL is returned.
- * A new search is initiated by passing %NULL as the @from argument.
- * Otherwise if @from is not %NULL, searches continue from next device
- * on the global list.
- *
- * NOTE: Do not use this function any more; use pci_get_device() instead, as
- * the PCI device returned by this function can disappear at any moment in
- * time.
- */
-struct pci_dev *pci_find_device(unsigned int vendor, unsigned int device,
-				struct pci_dev *from)
-{
-	struct pci_dev *pdev;
-
-	pci_dev_get(from);
-	pdev = pci_get_subsys(vendor, device, PCI_ANY_ID, PCI_ANY_ID, from);
-	pci_dev_put(pdev);
-	return pdev;
-}
-EXPORT_SYMBOL(pci_find_device);
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 174e539..dd9682c 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -615,12 +615,6 @@ extern void pci_sort_breadthfirst(void);
 
 /* Generic PCI functions exported to card drivers */
 
-#ifdef CONFIG_PCI_LEGACY
-struct pci_dev __deprecated *pci_find_device(unsigned int vendor,
-					     unsigned int device,
-					     struct pci_dev *from);
-#endif /* CONFIG_PCI_LEGACY */
-
 enum pci_lost_interrupt_reason {
 	PCI_LOST_IRQ_NO_INFORMATION = 0,
 	PCI_LOST_IRQ_DISABLE_MSI,
@@ -973,13 +967,6 @@ static inline int pci_proc_domain(struct pci_bus *bus)
 _PCI_NOP_ALL(read, *)
 _PCI_NOP_ALL(write,)
 
-static inline struct pci_dev *pci_find_device(unsigned int vendor,
-					      unsigned int device,
-					      struct pci_dev *from)
-{
-	return NULL;
-}
-
 static inline struct pci_dev *pci_get_device(unsigned int vendor,
 					     unsigned int device,
 					     struct pci_dev *from)

-- 
Tilman Schmidt                    E-Mail: tilman@imap.cc
Bonn, Germany
Diese Nachricht besteht zu 100% aus wiederverwerteten Bits.
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Re: Can we remove pci_find_device() yet?

[Greg KH]

On Mon, Jan 11, 2010 at 08:46:50PM +0100, Tilman Schmidt wrote:
> Am 08.01.2010 05:46 schrieb Greg KH:
> > On Fri, Jan 08, 2010 at 11:22:36AM +1100, Stephen Rothwell wrote:
> >>
> >> This interface has been deprecated since November 2006, so can something
> >> be done about the last users (I think only some ISDN drivers)?
> 
> That would be the HiSax I4L drivers.
> 
> > Ick, the "new" isdn drivers are still not merged that replace those
> > older ones?  I thought that happened a while ago.
> 
> mISDN, which is the designated successor to HiSax, has indeed been
> merged in 2008.
> 
> Trouble is, mISDN's userspace interface is completely different from I4L.
> Removing HiSax would therefore break userspace compatibility for current
> users of HiSax supported devices. In order to switch to mISDN they'll
> have to replace all of their ISDN4Linux applications with equivalent
> mISDN ones, and I'm not even sure there is a replacement for everything.
> 
> Just an idea - as a stopgap measure, couldn't pci_find_device() be made
> a private function of the HiSax drivers? That way, the remainder of the
> kernel won't be polluted by it anymore, and the PCI_LEGACY config option
> can be dropped. Something like this quick and dirty hack:

Close, but if you do this, please name the function
hisax_find_pci_device() or something, and change the drivers to use it
instead.  Also put a big fat warning in the function that calling this
is unsafe for any PCI hotplug type machine.

thanks,

greg k-h

Re: Can we remove pci_find_device() yet?

[Stephen Rothwell]

[-- Attachment #1: Type: text/plain, Size: 558 bytes --]

Hi Greg,

On Mon, 11 Jan 2010 12:01:36 -0800 Greg KH <gregkh@suse.de> wrote:
>
> Close, but if you do this, please name the function
> hisax_find_pci_device() or something, and change the drivers to use it
> instead.  Also put a big fat warning in the function that calling this
> is unsafe for any PCI hotplug type machine.

There is another implementation of pci_find_device in
drivers/staging/dt3155/pci-compat.h (used by dt3155_drv.c).
-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

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Re: Can we remove pci_find_device() yet?

[Greg KH]

On Tue, Jan 12, 2010 at 11:21:15AM +1100, Stephen Rothwell wrote:
> Hi Greg,
> 
> On Mon, 11 Jan 2010 12:01:36 -0800 Greg KH <gregkh@suse.de> wrote:
> >
> > Close, but if you do this, please name the function
> > hisax_find_pci_device() or something, and change the drivers to use it
> > instead.  Also put a big fat warning in the function that calling this
> > is unsafe for any PCI hotplug type machine.
> 
> There is another implementation of pci_find_device in
> drivers/staging/dt3155/pci-compat.h (used by dt3155_drv.c).

That file will be going away soon and the whole driver will be ported to
use the "real" PCI api, so don't worry about breaking any staging
drivers :)

thanks,

greg k-h

Re: Can we remove pci_find_device() yet?

[Tilman Schmidt]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Am 2010-01-11 21:01 schrieb Greg KH:
> On Mon, Jan 11, 2010 at 08:46:50PM +0100, Tilman Schmidt wrote:
>>
>> Just an idea - as a stopgap measure, couldn't pci_find_device() be made
>> a private function of the HiSax drivers? That way, the remainder of the
>> kernel won't be polluted by it anymore, and the PCI_LEGACY config option
>> can be dropped. Something like this quick and dirty hack:
> 
> Close, but if you do this, please name the function
> hisax_find_pci_device() or something, and change the drivers to use it

Sorry, but no. That would drag me into the checkpatch.pl swamp,
a place I know well enough by now to avoid it whenever possible.
Many of the calls to pci_find_device() have checkpatch problems
which of course do not go away by just substituting another
function name, so I would be obliged to restructure all those
call sites by hand for the sake of "not introducing new code
with checkpatch problems". BTDT.

So I'll drop that idea. If someone else wants to pick it up,
feel free to do so.

Regards,
Tilman

- -- 
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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Re: Can we remove pci_find_device() yet?

[Greg KH]

On Tue, Jan 12, 2010 at 05:42:14PM +0100, Tilman Schmidt wrote:
> Am 2010-01-11 21:01 schrieb Greg KH:
> > On Mon, Jan 11, 2010 at 08:46:50PM +0100, Tilman Schmidt wrote:
> >>
> >> Just an idea - as a stopgap measure, couldn't pci_find_device() be made
> >> a private function of the HiSax drivers? That way, the remainder of the
> >> kernel won't be polluted by it anymore, and the PCI_LEGACY config option
> >> can be dropped. Something like this quick and dirty hack:
> > 
> > Close, but if you do this, please name the function
> > hisax_find_pci_device() or something, and change the drivers to use it
> 
> Sorry, but no. That would drag me into the checkpatch.pl swamp,
> a place I know well enough by now to avoid it whenever possible.

I don't understand, why?

> Many of the calls to pci_find_device() have checkpatch problems
> which of course do not go away by just substituting another
> function name, so I would be obliged to restructure all those
> call sites by hand for the sake of "not introducing new code
> with checkpatch problems". BTDT.

No you would not, don't be crazy.  Modfying a single line to rename a
function from one thing to another could never be decreed as a "don't
add bad code".  And if someone says it is, well, you just found someone
who doesn't know what they are doing :)

> So I'll drop that idea. If someone else wants to pick it up,
> feel free to do so.

Please continue with this idea, it's sane, and valid.

thanks,

greg k-h

Re: Can we remove pci_find_device() yet?

[Krzysztof Halasa]

Greg KH <gregkh@suse.de> writes:

> Close, but if you do this, please name the function
> hisax_find_pci_device() or something, and change the drivers to use it
> instead.  Also put a big fat warning in the function that calling this
> is unsafe for any PCI hotplug type machine.

BTW, I have a driver in the works which uses these functions, and I
wonder how to do it correctly. The problem is that the hardware is a
dual-function PCI card (two DEC Tulip Ethernet controllers) but part of
the first device (EEPROM interface or something like that) is used by
both (there is an FPGA connected there, serving both channels).

This means drivers for dev#0 and dev#1 (both "normal" PCI controllers)
need to register and access part of dev#0 BARs.

How do I do that properly, in terms of PCI API?
-- 
Krzysztof Halasa

Re: Can we remove pci_find_device() yet?

[Ben Hutchings]

On Tue, 2010-01-12 at 21:34 +0100, Krzysztof Halasa wrote:
> Greg KH <gregkh@suse.de> writes:
> 
> > Close, but if you do this, please name the function
> > hisax_find_pci_device() or something, and change the drivers to use it
> > instead.  Also put a big fat warning in the function that calling this
> > is unsafe for any PCI hotplug type machine.
> 
> BTW, I have a driver in the works which uses these functions, and I
> wonder how to do it correctly. The problem is that the hardware is a
> dual-function PCI card (two DEC Tulip Ethernet controllers) but part of
> the first device (EEPROM interface or something like that) is used by
> both (there is an FPGA connected there, serving both channels).
> 
> This means drivers for dev#0 and dev#1 (both "normal" PCI controllers)
> need to register and access part of dev#0 BARs.

I hope you realise that this is a design error!  Linux is fairly
forgiving and allows PCI drivers to do unusual things, but other OSes
make it hard or impossible for PCI drivers to coordinate multiple
functions.

> How do I do that properly, in terms of PCI API?

One of our older controllers had a similar design error in that the two
functions would sometimes have to be reset together.  The way we look
for the second function is:

	dev = pci_dev_get(dev1);
	while ((dev = pci_get_device(vendor_id, device_id, dev))) {
		if (dev->bus == dev1->bus &&
		    dev->devfn == dev1->devfn + 1) {
			dev2 = dev;
			break;
		}
	}

I assume this is 'properly' since no-one has told me otherwise.

Ben.

-- 
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

Re: Can we remove pci_find_device() yet?

[Greg KH]

On Tue, Jan 12, 2010 at 08:53:25PM +0000, Ben Hutchings wrote:
> > How do I do that properly, in terms of PCI API?
> 
> One of our older controllers had a similar design error in that the two
> functions would sometimes have to be reset together.  The way we look
> for the second function is:
> 
> 	dev = pci_dev_get(dev1);
> 	while ((dev = pci_get_device(vendor_id, device_id, dev))) {
> 		if (dev->bus == dev1->bus &&
> 		    dev->devfn == dev1->devfn + 1) {
> 			dev2 = dev;
> 			break;
> 		}
> 	}
> 
> I assume this is 'properly' since no-one has told me otherwise.

As of right now, yes, this is the "correct" way to do this.

I need to dig up the "let multiple drivers bind to a single device"
patch set to make this not necessary in the future.

thanks,

greg k-h

Re: Can we remove pci_find_device() yet?

[Tilman Schmidt]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Am 2010-01-12 18:39 schrieb Greg KH:
> On Tue, Jan 12, 2010 at 05:42:14PM +0100, Tilman Schmidt wrote:
[...]
>> Many of the calls to pci_find_device() have checkpatch problems
>> which of course do not go away by just substituting another
>> function name, so I would be obliged to restructure all those
>> call sites by hand for the sake of "not introducing new code
>> with checkpatch problems". BTDT.
> 
> No you would not, don't be crazy.  Modfying a single line to rename a
> function from one thing to another could never be decreed as a "don't
> add bad code".  And if someone says it is, well, you just found someone
> who doesn't know what they are doing :)

Ok. I do hope you are right, and my extrapolation from past
experience was wrong.

> Please continue with this idea, it's sane, and valid.

Alright, will do. Patch will follow later today, SCJ. Let's see
what the checkpatch police will say.

Regards,
Tilman

- -- 
Tilman Schmidt                    E-Mail: tilman@imap.cc
Bonn, Germany
Diese Nachricht besteht zu 100% aus wiederverwerteten Bits.
Ungeöffnet mindestens haltbar bis: (siehe Rückseite)
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.12 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iEYEARECAAYFAktNjCQACgkQQ3+did9BuFsmMwCfReQ/mHQUApkpRWJZIG16PmvI
vO4Anj/A4kSwddg+RZV2Uj5LVUNlsBD3
=LxhW
-----END PGP SIGNATURE-----

[PATCH] pci: push deprecated pci_find_device() function to last user

[Tilman Schmidt]

The ISDN4Linux HiSax driver family contains the last remaining users
of the deprecated pci_find_device() function. This patch creates a
private copy of that function in HiSax, and removes the now unused
global function together with its controlling configuration option,
CONFIG_PCI_LEGACY.

Impact: code reorganization, no functional change
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
---
Note: This patch is not, nor does it intend to be, checkpatch.pl clean.
The issues checkpatch.pl reports on it were already present before, and
are unrelated to the topic of this patch.

 drivers/isdn/hisax/Kconfig        |   18 +++++++++---------
 drivers/isdn/hisax/avm_pci.c      |   13 +------------
 drivers/isdn/hisax/bkm_a4t.c      |    2 +-
 drivers/isdn/hisax/bkm_a8.c       |    2 +-
 drivers/isdn/hisax/diva.c         |   18 ++++--------------
 drivers/isdn/hisax/elsa.c         |   14 ++------------
 drivers/isdn/hisax/enternow_pci.c |    2 +-
 drivers/isdn/hisax/gazel.c        |   10 +---------
 drivers/isdn/hisax/hfc_pci.c      |    2 +-
 drivers/isdn/hisax/hisax.h        |   23 +++++++++++++++++++++++
 drivers/isdn/hisax/niccy.c        |    8 +-------
 drivers/isdn/hisax/nj_s.c         |    2 +-
 drivers/isdn/hisax/nj_u.c         |    2 +-
 drivers/isdn/hisax/sedlbauer.c    |   13 +------------
 drivers/isdn/hisax/telespci.c     |    2 +-
 drivers/isdn/hisax/w6692.c        |    2 +-
 drivers/pci/Kconfig               |   11 -----------
 drivers/pci/Makefile              |    3 ---
 drivers/pci/legacy.c              |   34 ----------------------------------
 include/linux/pci.h               |   13 -------------
 20 files changed, 50 insertions(+), 144 deletions(-)
 delete mode 100644 drivers/pci/legacy.c

diff --git a/drivers/isdn/hisax/Kconfig b/drivers/isdn/hisax/Kconfig
index 3464ebc..452fde9 100644
--- a/drivers/isdn/hisax/Kconfig
+++ b/drivers/isdn/hisax/Kconfig
@@ -109,7 +109,7 @@ config HISAX_16_3
 
 config HISAX_TELESPCI
 	bool "Teles PCI"
-	depends on PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the Teles PCI.
 	  See <file:Documentation/isdn/README.HiSax> on how to configure it.
@@ -237,7 +237,7 @@ config HISAX_MIC
 
 config HISAX_NETJET
 	bool "NETjet card"
-	depends on PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the NetJet from Traverse
 	  Technologies.
@@ -248,7 +248,7 @@ config HISAX_NETJET
 
 config HISAX_NETJET_U
 	bool "NETspider U card"
-	depends on PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the Netspider U interface ISDN card
 	  from Traverse Technologies.
@@ -287,7 +287,7 @@ config HISAX_HSTSAPHIR
 
 config HISAX_BKM_A4T
 	bool "Telekom A4T card"
-	depends on PCI && PCI_LEGACY
+	depends on PCI
 	help
 	  This enables HiSax support for the Telekom A4T card.
 
@@ -297,7 +297,7 @@ config HISAX_BKM_A4T
 
 config HISAX_SCT_QUADRO
 	bool "Scitel Quadro card"
-	depends on PCI && PCI_LEGACY
+	depends on PCI
 	help
 	  This enables HiSax support for the Scitel Quadro card.
 
@@ -316,7 +316,7 @@ config HISAX_GAZEL
 
 config HISAX_HFC_PCI
 	bool "HFC PCI-Bus cards"
-	depends on PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the HFC-S PCI 2BDS0 based cards.
 
@@ -325,7 +325,7 @@ config HISAX_HFC_PCI
 
 config HISAX_W6692
 	bool "Winbond W6692 based cards"
-	depends on PCI && PCI_LEGACY
+	depends on PCI
 	help
 	  This enables HiSax support for Winbond W6692 based PCI ISDN cards.
 
@@ -341,7 +341,7 @@ config HISAX_HFC_SX
 
 config HISAX_ENTERNOW_PCI
 	bool "Formula-n enter:now PCI card"
-	depends on HISAX_NETJET && PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on HISAX_NETJET && PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the Formula-n enter:now PCI
 	  ISDN card.
@@ -412,7 +412,7 @@ config HISAX_HFC4S8S
 
 config HISAX_FRITZ_PCIPNP
 	tristate "AVM Fritz!Card PCI/PCIv2/PnP support (EXPERIMENTAL)"
-	depends on PCI && PCI_LEGACY && EXPERIMENTAL
+	depends on PCI && EXPERIMENTAL
 	help
 	  This enables the driver for the AVM Fritz!Card PCI,
 	  Fritz!Card PCI v2 and Fritz!Card PnP.
diff --git a/drivers/isdn/hisax/avm_pci.c b/drivers/isdn/hisax/avm_pci.c
index 7cabc5a..e1563a6 100644
--- a/drivers/isdn/hisax/avm_pci.c
+++ b/drivers/isdn/hisax/avm_pci.c
@@ -822,20 +822,11 @@ static int __devinit avm_pnp_setup(struct IsdnCardState *cs)
 
 #endif /* __ISAPNP__ */
 
-#ifndef CONFIG_PCI_LEGACY
-
-static int __devinit avm_pci_setup(struct IsdnCardState *cs)
-{
-	return(1);	/* no-op: success */
-}
-
-#else
-
 static struct pci_dev *dev_avm __devinitdata = NULL;
 
 static int __devinit avm_pci_setup(struct IsdnCardState *cs)
 {
-	if ((dev_avm = pci_find_device(PCI_VENDOR_ID_AVM,
+	if ((dev_avm = hisax_find_pci_device(PCI_VENDOR_ID_AVM,
 		PCI_DEVICE_ID_AVM_A1, dev_avm))) {
 
 		if (pci_enable_device(dev_avm))
@@ -864,8 +855,6 @@ static int __devinit avm_pci_setup(struct IsdnCardState *cs)
 	return (1);
 }
 
-#endif /* CONFIG_PCI_LEGACY */
-
 int __devinit
 setup_avm_pcipnp(struct IsdnCard *card)
 {
diff --git a/drivers/isdn/hisax/bkm_a4t.c b/drivers/isdn/hisax/bkm_a4t.c
index 9ca2ee5..9f2009c 100644
--- a/drivers/isdn/hisax/bkm_a4t.c
+++ b/drivers/isdn/hisax/bkm_a4t.c
@@ -340,7 +340,7 @@ setup_bkm_a4t(struct IsdnCard *card)
 	} else
 		return (0);
 
-	while ((dev_a4t = pci_find_device(PCI_VENDOR_ID_ZORAN,
+	while ((dev_a4t = hisax_find_pci_device(PCI_VENDOR_ID_ZORAN,
 		PCI_DEVICE_ID_ZORAN_36120, dev_a4t))) {
 		ret = a4t_pci_probe(dev_a4t, cs, &found, &pci_memaddr);
 		if (!ret)
diff --git a/drivers/isdn/hisax/bkm_a8.c b/drivers/isdn/hisax/bkm_a8.c
index e1ff471..e775706 100644
--- a/drivers/isdn/hisax/bkm_a8.c
+++ b/drivers/isdn/hisax/bkm_a8.c
@@ -301,7 +301,7 @@ setup_sct_quadro(struct IsdnCard *card)
 		(sub_vendor_id != PCI_VENDOR_ID_BERKOM)))
 		return (0);
 	if (cs->subtyp == SCT_1) {
-		while ((dev_a8 = pci_find_device(PCI_VENDOR_ID_PLX,
+		while ((dev_a8 = hisax_find_pci_device(PCI_VENDOR_ID_PLX,
 			PCI_DEVICE_ID_PLX_9050, dev_a8))) {
 			
 			sub_vendor_id = dev_a8->subsystem_vendor;
diff --git a/drivers/isdn/hisax/diva.c b/drivers/isdn/hisax/diva.c
index 0b0c2e5..dd51ad4 100644
--- a/drivers/isdn/hisax/diva.c
+++ b/drivers/isdn/hisax/diva.c
@@ -1148,7 +1148,6 @@ static int __devinit setup_diva_isapnp(struct IsdnCard *card)
 
 #endif	/* ISAPNP */
 
-#ifdef CONFIG_PCI_LEGACY
 static struct pci_dev *dev_diva __devinitdata = NULL;
 static struct pci_dev *dev_diva_u __devinitdata = NULL;
 static struct pci_dev *dev_diva201 __devinitdata = NULL;
@@ -1159,21 +1158,21 @@ static int __devinit setup_diva_pci(struct IsdnCard *card)
 	struct IsdnCardState *cs = card->cs;
 
 	cs->subtyp = 0;
-	if ((dev_diva = pci_find_device(PCI_VENDOR_ID_EICON,
+	if ((dev_diva = hisax_find_pci_device(PCI_VENDOR_ID_EICON,
 		PCI_DEVICE_ID_EICON_DIVA20, dev_diva))) {
 		if (pci_enable_device(dev_diva))
 			return(0);
 		cs->subtyp = DIVA_PCI;
 		cs->irq = dev_diva->irq;
 		cs->hw.diva.cfg_reg = pci_resource_start(dev_diva, 2);
-	} else if ((dev_diva_u = pci_find_device(PCI_VENDOR_ID_EICON,
+	} else if ((dev_diva_u = hisax_find_pci_device(PCI_VENDOR_ID_EICON,
 		PCI_DEVICE_ID_EICON_DIVA20_U, dev_diva_u))) {
 		if (pci_enable_device(dev_diva_u))
 			return(0);
 		cs->subtyp = DIVA_PCI;
 		cs->irq = dev_diva_u->irq;
 		cs->hw.diva.cfg_reg = pci_resource_start(dev_diva_u, 2);
-	} else if ((dev_diva201 = pci_find_device(PCI_VENDOR_ID_EICON,
+	} else if ((dev_diva201 = hisax_find_pci_device(PCI_VENDOR_ID_EICON,
 		PCI_DEVICE_ID_EICON_DIVA201, dev_diva201))) {
 		if (pci_enable_device(dev_diva201))
 			return(0);
@@ -1183,7 +1182,7 @@ static int __devinit setup_diva_pci(struct IsdnCard *card)
 			(ulong) ioremap(pci_resource_start(dev_diva201, 0), 4096);
 		cs->hw.diva.cfg_reg =
 			(ulong) ioremap(pci_resource_start(dev_diva201, 1), 4096);
-	} else if ((dev_diva202 = pci_find_device(PCI_VENDOR_ID_EICON,
+	} else if ((dev_diva202 = hisax_find_pci_device(PCI_VENDOR_ID_EICON,
 		PCI_DEVICE_ID_EICON_DIVA202, dev_diva202))) {
 		if (pci_enable_device(dev_diva202))
 			return(0);
@@ -1229,15 +1228,6 @@ static int __devinit setup_diva_pci(struct IsdnCard *card)
 	return (1);		/* card found */
 }
 
-#else	/* if !CONFIG_PCI_LEGACY */
-
-static int __devinit setup_diva_pci(struct IsdnCard *card)
-{
-	return (-1);	/* card not found; continue search */
-}
-
-#endif	/* CONFIG_PCI_LEGACY */
-
 int __devinit
 setup_diva(struct IsdnCard *card)
 {
diff --git a/drivers/isdn/hisax/elsa.c b/drivers/isdn/hisax/elsa.c
index aa29d1c..71aa8a1 100644
--- a/drivers/isdn/hisax/elsa.c
+++ b/drivers/isdn/hisax/elsa.c
@@ -1025,7 +1025,6 @@ setup_elsa_pcmcia(struct IsdnCard *card)
 	       cs->irq);
 }
 
-#ifdef CONFIG_PCI_LEGACY
 static 	struct pci_dev *dev_qs1000 __devinitdata = NULL;
 static 	struct pci_dev *dev_qs3000 __devinitdata = NULL;
 
@@ -1035,7 +1034,7 @@ setup_elsa_pci(struct IsdnCard *card)
 	struct IsdnCardState *cs = card->cs;
 
 	cs->subtyp = 0;
-	if ((dev_qs1000 = pci_find_device(PCI_VENDOR_ID_ELSA,
+	if ((dev_qs1000 = hisax_find_pci_device(PCI_VENDOR_ID_ELSA,
 		PCI_DEVICE_ID_ELSA_MICROLINK, dev_qs1000))) {
 		if (pci_enable_device(dev_qs1000))
 			return(0);
@@ -1043,7 +1042,7 @@ setup_elsa_pci(struct IsdnCard *card)
 		cs->irq = dev_qs1000->irq;
 		cs->hw.elsa.cfg = pci_resource_start(dev_qs1000, 1);
 		cs->hw.elsa.base = pci_resource_start(dev_qs1000, 3);
-	} else if ((dev_qs3000 = pci_find_device(PCI_VENDOR_ID_ELSA,
+	} else if ((dev_qs3000 = hisax_find_pci_device(PCI_VENDOR_ID_ELSA,
 		PCI_DEVICE_ID_ELSA_QS3000, dev_qs3000))) {
 		if (pci_enable_device(dev_qs3000))
 			return(0);
@@ -1086,15 +1085,6 @@ setup_elsa_pci(struct IsdnCard *card)
 	return (1);
 }
 
-#else
-
-static int __devinit
-setup_elsa_pci(struct IsdnCard *card)
-{
-	return (1);
-}
-#endif /* CONFIG_PCI_LEGACY */
-
 static int __devinit
 setup_elsa_common(struct IsdnCard *card)
 {
diff --git a/drivers/isdn/hisax/enternow_pci.c b/drivers/isdn/hisax/enternow_pci.c
index 39f421e..26264ab 100644
--- a/drivers/isdn/hisax/enternow_pci.c
+++ b/drivers/isdn/hisax/enternow_pci.c
@@ -406,7 +406,7 @@ setup_enternow_pci(struct IsdnCard *card)
 
 	for ( ;; )
 	{
-		if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET,
+		if ((dev_netjet = hisax_find_pci_device(PCI_VENDOR_ID_TIGERJET,
 			PCI_DEVICE_ID_TIGERJET_300,  dev_netjet))) {
 			ret = en_pci_probe(dev_netjet, cs);
 			if (!ret)
diff --git a/drivers/isdn/hisax/gazel.c b/drivers/isdn/hisax/gazel.c
index 0ea3b46..8a6fd8b 100644
--- a/drivers/isdn/hisax/gazel.c
+++ b/drivers/isdn/hisax/gazel.c
@@ -531,7 +531,6 @@ setup_gazelisa(struct IsdnCard *card, struct IsdnCardState *cs)
 	return (0);
 }
 
-#ifdef CONFIG_PCI_LEGACY
 static struct pci_dev *dev_tel __devinitdata = NULL;
 
 static int __devinit
@@ -546,7 +545,7 @@ setup_gazelpci(struct IsdnCardState *cs)
 	found = 0;
 	seekcard = PCI_DEVICE_ID_PLX_R685;
 	for (nbseek = 0; nbseek < 4; nbseek++) {
-		if ((dev_tel = pci_find_device(PCI_VENDOR_ID_PLX,
+		if ((dev_tel = hisax_find_pci_device(PCI_VENDOR_ID_PLX,
 					seekcard, dev_tel))) {
 			if (pci_enable_device(dev_tel))
 				return 1;
@@ -620,7 +619,6 @@ setup_gazelpci(struct IsdnCardState *cs)
 
 	return (0);
 }
-#endif /* CONFIG_PCI_LEGACY */
 
 int __devinit
 setup_gazel(struct IsdnCard *card)
@@ -639,14 +637,8 @@ setup_gazel(struct IsdnCard *card)
 		if (setup_gazelisa(card, cs))
 			return (0);
 	} else {
-
-#ifdef CONFIG_PCI_LEGACY
 		if (setup_gazelpci(cs))
 			return (0);
-#else
-		printk(KERN_WARNING "Gazel: Card PCI requested and NO_PCI_BIOS, unable to config\n");
-		return (0);
-#endif				/* CONFIG_PCI */
 	}
 
 	if (reserve_regions(card, cs)) {
diff --git a/drivers/isdn/hisax/hfc_pci.c b/drivers/isdn/hisax/hfc_pci.c
index 1091473..917cc84 100644
--- a/drivers/isdn/hisax/hfc_pci.c
+++ b/drivers/isdn/hisax/hfc_pci.c
@@ -1658,7 +1658,7 @@ setup_hfcpci(struct IsdnCard *card)
 
 	i = 0;
 	while (id_list[i].vendor_id) {
-		tmp_hfcpci = pci_find_device(id_list[i].vendor_id,
+		tmp_hfcpci = hisax_find_pci_device(id_list[i].vendor_id,
 					     id_list[i].device_id,
 					     dev_hfcpci);
 		i++;
diff --git a/drivers/isdn/hisax/hisax.h b/drivers/isdn/hisax/hisax.h
index 0685c19..832a878 100644
--- a/drivers/isdn/hisax/hisax.h
+++ b/drivers/isdn/hisax/hisax.h
@@ -1323,3 +1323,26 @@ void release_tei(struct IsdnCardState *cs);
 char *HiSax_getrev(const char *revision);
 int TeiNew(void);
 void TeiFree(void);
+
+#ifdef CONFIG_PCI
+
+#include <linux/pci.h>
+
+/* adaptation wrapper for old usage
+ * WARNING! This is unfit for use in a PCI hotplug environment,
+ * as the returned PCI device can disappear at any moment in time.
+ * Callers should be converted to use pci_get_device() instead.
+ */
+static inline struct pci_dev *hisax_find_pci_device(unsigned int vendor,
+						    unsigned int device,
+						    struct pci_dev *from)
+{
+	struct pci_dev *pdev;
+
+	pci_dev_get(from);
+	pdev = pci_get_subsys(vendor, device, PCI_ANY_ID, PCI_ANY_ID, from);
+	pci_dev_put(pdev);
+	return pdev;
+}
+
+#endif
diff --git a/drivers/isdn/hisax/niccy.c b/drivers/isdn/hisax/niccy.c
index ef00633..91c4241 100644
--- a/drivers/isdn/hisax/niccy.c
+++ b/drivers/isdn/hisax/niccy.c
@@ -297,12 +297,11 @@ int __devinit setup_niccy(struct IsdnCard *card)
 			return 0;
 		}
 	} else {
-#ifdef CONFIG_PCI_LEGACY
 		static struct pci_dev *niccy_dev __devinitdata;
 
 		u_int pci_ioaddr;
 		cs->subtyp = 0;
-		if ((niccy_dev = pci_find_device(PCI_VENDOR_ID_SATSAGEM,
+		if ((niccy_dev = hisax_find_pci_device(PCI_VENDOR_ID_SATSAGEM,
 						 PCI_DEVICE_ID_SATSAGEM_NICCY,
 						 niccy_dev))) {
 			if (pci_enable_device(niccy_dev))
@@ -350,11 +349,6 @@ int __devinit setup_niccy(struct IsdnCard *card)
 			release_region(cs->hw.niccy.isac, 4);
 			return 0;
 		}
-#else
-		printk(KERN_WARNING "Niccy: io0 0 and NO_PCI_BIOS\n");
-		printk(KERN_WARNING "Niccy: unable to config NICCY PCI\n");
-		return 0;
-#endif				/* CONFIG_PCI_LEGACY */
 	}
 	printk(KERN_INFO "HiSax: NICCY %s config irq:%d data:0x%X ale:0x%X\n",
 		(cs->subtyp == 1) ? "PnP" : "PCI",
diff --git a/drivers/isdn/hisax/nj_s.c b/drivers/isdn/hisax/nj_s.c
index 8d36ccc..2344e7b 100644
--- a/drivers/isdn/hisax/nj_s.c
+++ b/drivers/isdn/hisax/nj_s.c
@@ -276,7 +276,7 @@ setup_netjet_s(struct IsdnCard *card)
 
 	for ( ;; )
 	{
-		if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET,
+		if ((dev_netjet = hisax_find_pci_device(PCI_VENDOR_ID_TIGERJET,
 			PCI_DEVICE_ID_TIGERJET_300,  dev_netjet))) {
 			ret = njs_pci_probe(dev_netjet, cs);
 			if (!ret)
diff --git a/drivers/isdn/hisax/nj_u.c b/drivers/isdn/hisax/nj_u.c
index d306c94..095e974 100644
--- a/drivers/isdn/hisax/nj_u.c
+++ b/drivers/isdn/hisax/nj_u.c
@@ -240,7 +240,7 @@ setup_netjet_u(struct IsdnCard *card)
 
 	for ( ;; )
 	{
-		if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET,
+		if ((dev_netjet = hisax_find_pci_device(PCI_VENDOR_ID_TIGERJET,
 			PCI_DEVICE_ID_TIGERJET_300,  dev_netjet))) {
 			ret = nju_pci_probe(dev_netjet, cs);
 			if (!ret)
diff --git a/drivers/isdn/hisax/sedlbauer.c b/drivers/isdn/hisax/sedlbauer.c
index 5569a52..b90abd9 100644
--- a/drivers/isdn/hisax/sedlbauer.c
+++ b/drivers/isdn/hisax/sedlbauer.c
@@ -598,7 +598,6 @@ setup_sedlbauer_isapnp(struct IsdnCard *card, int *bytecnt)
 }
 #endif /* __ISAPNP__ */
 
-#ifdef CONFIG_PCI_LEGACY
 static struct pci_dev *dev_sedl __devinitdata = NULL;
 
 static int __devinit
@@ -607,7 +606,7 @@ setup_sedlbauer_pci(struct IsdnCard *card)
 	struct IsdnCardState *cs = card->cs;
 	u16 sub_vendor_id, sub_id;
 
-	if ((dev_sedl = pci_find_device(PCI_VENDOR_ID_TIGERJET,
+	if ((dev_sedl = hisax_find_pci_device(PCI_VENDOR_ID_TIGERJET,
 			PCI_DEVICE_ID_TIGERJET_100, dev_sedl))) {
 		if (pci_enable_device(dev_sedl))
 			return(0);
@@ -665,16 +664,6 @@ setup_sedlbauer_pci(struct IsdnCard *card)
 	return (1);
 }
 
-#else
-
-static int __devinit
-setup_sedlbauer_pci(struct IsdnCard *card)
-{
-	return (1);
-}
-
-#endif /* CONFIG_PCI_LEGACY */
-
 int __devinit
 setup_sedlbauer(struct IsdnCard *card)
 {
diff --git a/drivers/isdn/hisax/telespci.c b/drivers/isdn/hisax/telespci.c
index 28b08de..b85ceb3 100644
--- a/drivers/isdn/hisax/telespci.c
+++ b/drivers/isdn/hisax/telespci.c
@@ -300,7 +300,7 @@ setup_telespci(struct IsdnCard *card)
 	if (cs->typ != ISDN_CTYPE_TELESPCI)
 		return (0);
 
-	if ((dev_tel = pci_find_device (PCI_VENDOR_ID_ZORAN, PCI_DEVICE_ID_ZORAN_36120, dev_tel))) {
+	if ((dev_tel = hisax_find_pci_device (PCI_VENDOR_ID_ZORAN, PCI_DEVICE_ID_ZORAN_36120, dev_tel))) {
 		if (pci_enable_device(dev_tel))
 			return(0);
 		cs->irq = dev_tel->irq;
diff --git a/drivers/isdn/hisax/w6692.c b/drivers/isdn/hisax/w6692.c
index c4d862c..9d6e864 100644
--- a/drivers/isdn/hisax/w6692.c
+++ b/drivers/isdn/hisax/w6692.c
@@ -1007,7 +1007,7 @@ setup_w6692(struct IsdnCard *card)
 		return (0);
 
 	while (id_list[id_idx].vendor_id) {
-		dev_w6692 = pci_find_device(id_list[id_idx].vendor_id,
+		dev_w6692 = hisax_find_pci_device(id_list[id_idx].vendor_id,
 					    id_list[id_idx].device_id,
 					    dev_w6692);
 		if (dev_w6692) {
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index b1ecefa..7858a11 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -21,17 +21,6 @@ config PCI_MSI
 
 	   If you don't know what to do here, say N.
 
-config PCI_LEGACY
-	bool "Enable deprecated pci_find_* API"
-	depends on PCI
-	default y
-	help
-	  Say Y here if you want to include support for the deprecated
-	  pci_find_device() API.  Most drivers have been converted over
-	  to using the proper hotplug APIs, so this option serves to
-	  include/exclude only a few drivers that are still using this
-	  API.
-
 config PCI_DEBUG
 	bool "PCI Debugging"
 	depends on PCI && DEBUG_KERNEL
diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index 4df48d5..f635608 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -8,9 +8,6 @@ obj-y		+= access.o bus.o probe.o remove.o pci.o quirks.o \
 obj-$(CONFIG_PROC_FS) += proc.o
 obj-$(CONFIG_SYSFS) += slot.o
 
-obj-$(CONFIG_PCI_LEGACY) += legacy.o
-CFLAGS_legacy.o += -Wno-deprecated-declarations
-
 # Build PCI Express stuff if needed
 obj-$(CONFIG_PCIEPORTBUS) += pcie/
 
diff --git a/drivers/pci/legacy.c b/drivers/pci/legacy.c
deleted file mode 100644
index 871f65c..0000000
--- a/drivers/pci/legacy.c
+++ /dev/null
@@ -1,34 +0,0 @@
-#include <linux/init.h>
-#include <linux/pci.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include "pci.h"
-
-/**
- * pci_find_device - begin or continue searching for a PCI device by vendor/device id
- * @vendor: PCI vendor id to match, or %PCI_ANY_ID to match all vendor ids
- * @device: PCI device id to match, or %PCI_ANY_ID to match all device ids
- * @from: Previous PCI device found in search, or %NULL for new search.
- *
- * Iterates through the list of known PCI devices.  If a PCI device is found
- * with a matching @vendor and @device, a pointer to its device structure is
- * returned.  Otherwise, %NULL is returned.
- * A new search is initiated by passing %NULL as the @from argument.
- * Otherwise if @from is not %NULL, searches continue from next device
- * on the global list.
- *
- * NOTE: Do not use this function any more; use pci_get_device() instead, as
- * the PCI device returned by this function can disappear at any moment in
- * time.
- */
-struct pci_dev *pci_find_device(unsigned int vendor, unsigned int device,
-				struct pci_dev *from)
-{
-	struct pci_dev *pdev;
-
-	pci_dev_get(from);
-	pdev = pci_get_subsys(vendor, device, PCI_ANY_ID, PCI_ANY_ID, from);
-	pci_dev_put(pdev);
-	return pdev;
-}
-EXPORT_SYMBOL(pci_find_device);
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 174e539..dd9682c 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -615,12 +615,6 @@ extern void pci_sort_breadthfirst(void);
 
 /* Generic PCI functions exported to card drivers */
 
-#ifdef CONFIG_PCI_LEGACY
-struct pci_dev __deprecated *pci_find_device(unsigned int vendor,
-					     unsigned int device,
-					     struct pci_dev *from);
-#endif /* CONFIG_PCI_LEGACY */
-
 enum pci_lost_interrupt_reason {
 	PCI_LOST_IRQ_NO_INFORMATION = 0,
 	PCI_LOST_IRQ_DISABLE_MSI,
@@ -973,13 +967,6 @@ static inline int pci_proc_domain(struct pci_bus *bus)
 _PCI_NOP_ALL(read, *)
 _PCI_NOP_ALL(write,)
 
-static inline struct pci_dev *pci_find_device(unsigned int vendor,
-					      unsigned int device,
-					      struct pci_dev *from)
-{
-	return NULL;
-}
-
 static inline struct pci_dev *pci_get_device(unsigned int vendor,
 					     unsigned int device,
 					     struct pci_dev *from)
-- 
1.6.5.3.298.g39add

Re: Can we remove pci_find_device() yet?

[Krzysztof Halasa]

Greg KH <gregkh@suse.de> writes:

>> One of our older controllers had a similar design error in that the two
>> functions would sometimes have to be reset together.  The way we look
>> for the second function is:
>> 
>> 	dev = pci_dev_get(dev1);
>> 	while ((dev = pci_get_device(vendor_id, device_id, dev))) {
>> 		if (dev->bus == dev1->bus &&
>> 		    dev->devfn == dev1->devfn + 1) {
>> 			dev2 = dev;
>> 			break;
>> 		}
>> 	}
>> 
>> I assume this is 'properly' since no-one has told me otherwise.
>
> As of right now, yes, this is the "correct" way to do this.
>
> I need to dig up the "let multiple drivers bind to a single device"
> patch set to make this not necessary in the future.

Ben and Greg, thanks.
-- 
Krzysztof Halasa

Re: [PATCH] pci: push deprecated pci_find_device() function to last user

[David Miller]

From: Tilman Schmidt <tilman@imap.cc>
Date: Wed, 13 Jan 2010 15:23:28 +0100 (CET)

> The ISDN4Linux HiSax driver family contains the last remaining users
> of the deprecated pci_find_device() function. This patch creates a
> private copy of that function in HiSax, and removes the now unused
> global function together with its controlling configuration option,
> CONFIG_PCI_LEGACY.
> 
> Impact: code reorganization, no functional change
> Signed-off-by: Tilman Schmidt <tilman@imap.cc>
> ---
> Note: This patch is not, nor does it intend to be, checkpatch.pl clean.
> The issues checkpatch.pl reports on it were already present before, and
> are unrelated to the topic of this patch.

I'm fine with this, and Greg or whoever else can take this
through a driver or PCI specific tree if they want:

Acked-by: David S. Miller <davem@davemloft.net>

Re: [PATCH] pci: push deprecated pci_find_device() function to last user

[Greg KH]

On Wed, Jan 13, 2010 at 08:33:38PM -0800, David Miller wrote:
> From: Tilman Schmidt <tilman@imap.cc>
> Date: Wed, 13 Jan 2010 15:23:28 +0100 (CET)
> 
> > The ISDN4Linux HiSax driver family contains the last remaining users
> > of the deprecated pci_find_device() function. This patch creates a
> > private copy of that function in HiSax, and removes the now unused
> > global function together with its controlling configuration option,
> > CONFIG_PCI_LEGACY.
> > 
> > Impact: code reorganization, no functional change
> > Signed-off-by: Tilman Schmidt <tilman@imap.cc>
> > ---
> > Note: This patch is not, nor does it intend to be, checkpatch.pl clean.
> > The issues checkpatch.pl reports on it were already present before, and
> > are unrelated to the topic of this patch.
> 
> I'm fine with this, and Greg or whoever else can take this
> through a driver or PCI specific tree if they want:
> 
> Acked-by: David S. Miller <davem@davemloft.net>

Where do ISDN patches go through, the network tree?

Acked-by: Greg Kroah-Hartman <gregkh@suse.de>

Re: [PATCH] pci: push deprecated pci_find_device() function to last user

[David Miller]

From: Greg KH <gregkh@suse.de>
Date: Wed, 13 Jan 2010 20:43:31 -0800

> On Wed, Jan 13, 2010 at 08:33:38PM -0800, David Miller wrote:
>> From: Tilman Schmidt <tilman@imap.cc>
>> Date: Wed, 13 Jan 2010 15:23:28 +0100 (CET)
>> 
>> > The ISDN4Linux HiSax driver family contains the last remaining users
>> > of the deprecated pci_find_device() function. This patch creates a
>> > private copy of that function in HiSax, and removes the now unused
>> > global function together with its controlling configuration option,
>> > CONFIG_PCI_LEGACY.
>> > 
>> > Impact: code reorganization, no functional change
>> > Signed-off-by: Tilman Schmidt <tilman@imap.cc>
>> > ---
>> > Note: This patch is not, nor does it intend to be, checkpatch.pl clean.
>> > The issues checkpatch.pl reports on it were already present before, and
>> > are unrelated to the topic of this patch.
>> 
>> I'm fine with this, and Greg or whoever else can take this
>> through a driver or PCI specific tree if they want:
>> 
>> Acked-by: David S. Miller <davem@davemloft.net>
> 
> Where do ISDN patches go through, the network tree?
> 
> Acked-by: Greg Kroah-Hartman <gregkh@suse.de>

Yeah usually, but I thought the PCI tree might want this one
because it tosses things from drivers/pci

Re: Can we remove pci_find_device() yet?

[Andi Kleen]

Greg KH <gregkh@suse.de> writes:
>
> Close, but if you do this, please name the function
> hisax_find_pci_device() or something, and change the drivers to use it
> instead.  Also put a big fat warning in the function that calling this
> is unsafe for any PCI hotplug type machine.

It would be better to enforce this constraint at runtime.

e.g. set some global variable that forbids device removal
and warn in the kernel log. In theory this could be also
done per device, but I guess that would be more effort.

Of course it cannot prevent the user from really removing
a device, but at least the pci_dev could stay around.

-Andi
-- 
ak@linux.intel.com -- Speaking for myself only.

Re: Can we remove pci_find_device() yet?

[Alan Cox]

> e.g. set some global variable that forbids device removal
> and warn in the kernel log. In theory this could be also
> done per device, but I guess that would be more effort.

There is a simpler way to do that, which is to just leak a reference in
the hisax_find_pci_device hack. The pci_dev won't be going anywhere then.

Re: Can we remove pci_find_device() yet?

[Andi Kleen]

On Thu, Jan 14, 2010 at 11:02:14AM +0000, Alan Cox wrote:
> > e.g. set some global variable that forbids device removal
> > and warn in the kernel log. In theory this could be also
> > done per device, but I guess that would be more effort.
> 
> There is a simpler way to do that, which is to just leak a reference in
> the hisax_find_pci_device hack. The pci_dev won't be going anywhere then.

You just have to do it once, otherwise it'll fail after 4 billion times.

-Andi


-- 
ak@linux.intel.com -- Speaking for myself only.

Re: Can we remove pci_find_device() yet?

[Tilman Schmidt]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Am 2010-01-14 12:03 schrieb Andi Kleen:
> On Thu, Jan 14, 2010 at 11:02:14AM +0000, Alan Cox wrote:
[It would be better to enforce this constraint at runtime.]
>> There is a simpler way to do that, which is to just leak a reference in
>> the hisax_find_pci_device hack. The pci_dev won't be going anywhere then.
> 
> You just have to do it once, otherwise it'll fail after 4 billion times.

I guess we could live with that. pci_find_device() or its successor, the
hisax_find_pci_device() hack, is only called during device setup, once
for most drivers and at the very most 24 times for hfc_pci. Someone
would have to rmmod/insmod a HiSax module more than a hundred million
times to accumulate four billion calls.

- -- 
Tilman Schmidt                    E-Mail: tilman@imap.cc
Bonn, Germany
Diese Nachricht besteht zu 100% aus wiederverwerteten Bits.
Ungeöffnet mindestens haltbar bis: (siehe Rückseite)
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.12 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iEYEARECAAYFAktPEHMACgkQQ3+did9BuFuQ/gCgkhu6RJIwrpIDAJMWbO1mZgOd
BKwAnAh6kX5F/+dFPIrK/XLovEAv/R7O
=fflE
-----END PGP SIGNATURE-----

Re: [PATCH] pci: push deprecated pci_find_device() function to last user

[Jesse Barnes]

On Thu, 14 Jan 2010 00:12:04 -0800 (PST)
David Miller <davem@davemloft.net> wrote:

> From: Greg KH <gregkh@suse.de>
> Date: Wed, 13 Jan 2010 20:43:31 -0800
> 
> > On Wed, Jan 13, 2010 at 08:33:38PM -0800, David Miller wrote:
> >> From: Tilman Schmidt <tilman@imap.cc>
> >> Date: Wed, 13 Jan 2010 15:23:28 +0100 (CET)
> >> 
> >> > The ISDN4Linux HiSax driver family contains the last remaining
> >> > users of the deprecated pci_find_device() function. This patch
> >> > creates a private copy of that function in HiSax, and removes
> >> > the now unused global function together with its controlling
> >> > configuration option, CONFIG_PCI_LEGACY.
> >> > 
> >> > Impact: code reorganization, no functional change
> >> > Signed-off-by: Tilman Schmidt <tilman@imap.cc>
> >> > ---
> >> > Note: This patch is not, nor does it intend to be, checkpatch.pl
> >> > clean. The issues checkpatch.pl reports on it were already
> >> > present before, and are unrelated to the topic of this patch.
> >> 
> >> I'm fine with this, and Greg or whoever else can take this
> >> through a driver or PCI specific tree if they want:
> >> 
> >> Acked-by: David S. Miller <davem@davemloft.net>
> > 
> > Where do ISDN patches go through, the network tree?
> > 
> > Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
> 
> Yeah usually, but I thought the PCI tree might want this one
> because it tosses things from drivers/pci

I can take it, but I lost the original patch.  Tilman, can you resend?

Thanks,
-- 
Jesse Barnes, Intel Open Source Technology Center

[PATCH/REPOST] pci: push deprecated pci_find_device() function to last user

[Tilman Schmidt]

Am 14.01.2010 17:28 schrieb Jesse Barnes:
> I can take it, but I lost the original patch.  Tilman, can you resend?

Sure, here you are:

Subject: [PATCH] pci: push deprecated pci_find_device() function to last user

The ISDN4Linux HiSax driver family contains the last remaining users
of the deprecated pci_find_device() function. This patch creates a
private copy of that function in HiSax, and removes the now unused
global function together with its controlling configuration option,
CONFIG_PCI_LEGACY.

Impact: code reorganization, no functional change
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
---
Note: This patch is not, nor does it intend to be, checkpatch.pl clean.
The issues checkpatch.pl reports on it were already present before, and
are unrelated to the topic of this patch.

 drivers/isdn/hisax/Kconfig        |   18 +++++++++---------
 drivers/isdn/hisax/avm_pci.c      |   13 +------------
 drivers/isdn/hisax/bkm_a4t.c      |    2 +-
 drivers/isdn/hisax/bkm_a8.c       |    2 +-
 drivers/isdn/hisax/diva.c         |   18 ++++--------------
 drivers/isdn/hisax/elsa.c         |   14 ++------------
 drivers/isdn/hisax/enternow_pci.c |    2 +-
 drivers/isdn/hisax/gazel.c        |   10 +---------
 drivers/isdn/hisax/hfc_pci.c      |    2 +-
 drivers/isdn/hisax/hisax.h        |   23 +++++++++++++++++++++++
 drivers/isdn/hisax/niccy.c        |    8 +-------
 drivers/isdn/hisax/nj_s.c         |    2 +-
 drivers/isdn/hisax/nj_u.c         |    2 +-
 drivers/isdn/hisax/sedlbauer.c    |   13 +------------
 drivers/isdn/hisax/telespci.c     |    2 +-
 drivers/isdn/hisax/w6692.c        |    2 +-
 drivers/pci/Kconfig               |   11 -----------
 drivers/pci/Makefile              |    3 ---
 drivers/pci/legacy.c              |   34 ----------------------------------
 include/linux/pci.h               |   13 -------------
 20 files changed, 50 insertions(+), 144 deletions(-)
 delete mode 100644 drivers/pci/legacy.c

diff --git a/drivers/isdn/hisax/Kconfig b/drivers/isdn/hisax/Kconfig
index 3464ebc..452fde9 100644
--- a/drivers/isdn/hisax/Kconfig
+++ b/drivers/isdn/hisax/Kconfig
@@ -109,7 +109,7 @@ config HISAX_16_3
 
 config HISAX_TELESPCI
 	bool "Teles PCI"
-	depends on PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the Teles PCI.
 	  See <file:Documentation/isdn/README.HiSax> on how to configure it.
@@ -237,7 +237,7 @@ config HISAX_MIC
 
 config HISAX_NETJET
 	bool "NETjet card"
-	depends on PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the NetJet from Traverse
 	  Technologies.
@@ -248,7 +248,7 @@ config HISAX_NETJET
 
 config HISAX_NETJET_U
 	bool "NETspider U card"
-	depends on PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the Netspider U interface ISDN card
 	  from Traverse Technologies.
@@ -287,7 +287,7 @@ config HISAX_HSTSAPHIR
 
 config HISAX_BKM_A4T
 	bool "Telekom A4T card"
-	depends on PCI && PCI_LEGACY
+	depends on PCI
 	help
 	  This enables HiSax support for the Telekom A4T card.
 
@@ -297,7 +297,7 @@ config HISAX_BKM_A4T
 
 config HISAX_SCT_QUADRO
 	bool "Scitel Quadro card"
-	depends on PCI && PCI_LEGACY
+	depends on PCI
 	help
 	  This enables HiSax support for the Scitel Quadro card.
 
@@ -316,7 +316,7 @@ config HISAX_GAZEL
 
 config HISAX_HFC_PCI
 	bool "HFC PCI-Bus cards"
-	depends on PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the HFC-S PCI 2BDS0 based cards.
 
@@ -325,7 +325,7 @@ config HISAX_HFC_PCI
 
 config HISAX_W6692
 	bool "Winbond W6692 based cards"
-	depends on PCI && PCI_LEGACY
+	depends on PCI
 	help
 	  This enables HiSax support for Winbond W6692 based PCI ISDN cards.
 
@@ -341,7 +341,7 @@ config HISAX_HFC_SX
 
 config HISAX_ENTERNOW_PCI
 	bool "Formula-n enter:now PCI card"
-	depends on HISAX_NETJET && PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on HISAX_NETJET && PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the Formula-n enter:now PCI
 	  ISDN card.
@@ -412,7 +412,7 @@ config HISAX_HFC4S8S
 
 config HISAX_FRITZ_PCIPNP
 	tristate "AVM Fritz!Card PCI/PCIv2/PnP support (EXPERIMENTAL)"
-	depends on PCI && PCI_LEGACY && EXPERIMENTAL
+	depends on PCI && EXPERIMENTAL
 	help
 	  This enables the driver for the AVM Fritz!Card PCI,
 	  Fritz!Card PCI v2 and Fritz!Card PnP.
diff --git a/drivers/isdn/hisax/avm_pci.c b/drivers/isdn/hisax/avm_pci.c
index 7cabc5a..e1563a6 100644
--- a/drivers/isdn/hisax/avm_pci.c
+++ b/drivers/isdn/hisax/avm_pci.c
@@ -822,20 +822,11 @@ static int __devinit avm_pnp_setup(struct IsdnCardState *cs)
 
 #endif /* __ISAPNP__ */
 
-#ifndef CONFIG_PCI_LEGACY
-
-static int __devinit avm_pci_setup(struct IsdnCardState *cs)
-{
-	return(1);	/* no-op: success */
-}
-
-#else
-
 static struct pci_dev *dev_avm __devinitdata = NULL;
 
 static int __devinit avm_pci_setup(struct IsdnCardState *cs)
 {
-	if ((dev_avm = pci_find_device(PCI_VENDOR_ID_AVM,
+	if ((dev_avm = hisax_find_pci_device(PCI_VENDOR_ID_AVM,
 		PCI_DEVICE_ID_AVM_A1, dev_avm))) {
 
 		if (pci_enable_device(dev_avm))
@@ -864,8 +855,6 @@ static int __devinit avm_pci_setup(struct IsdnCardState *cs)
 	return (1);
 }
 
-#endif /* CONFIG_PCI_LEGACY */
-
 int __devinit
 setup_avm_pcipnp(struct IsdnCard *card)
 {
diff --git a/drivers/isdn/hisax/bkm_a4t.c b/drivers/isdn/hisax/bkm_a4t.c
index 9ca2ee5..9f2009c 100644
--- a/drivers/isdn/hisax/bkm_a4t.c
+++ b/drivers/isdn/hisax/bkm_a4t.c
@@ -340,7 +340,7 @@ setup_bkm_a4t(struct IsdnCard *card)
 	} else
 		return (0);
 
-	while ((dev_a4t = pci_find_device(PCI_VENDOR_ID_ZORAN,
+	while ((dev_a4t = hisax_find_pci_device(PCI_VENDOR_ID_ZORAN,
 		PCI_DEVICE_ID_ZORAN_36120, dev_a4t))) {
 		ret = a4t_pci_probe(dev_a4t, cs, &found, &pci_memaddr);
 		if (!ret)
diff --git a/drivers/isdn/hisax/bkm_a8.c b/drivers/isdn/hisax/bkm_a8.c
index e1ff471..e775706 100644
--- a/drivers/isdn/hisax/bkm_a8.c
+++ b/drivers/isdn/hisax/bkm_a8.c
@@ -301,7 +301,7 @@ setup_sct_quadro(struct IsdnCard *card)
 		(sub_vendor_id != PCI_VENDOR_ID_BERKOM)))
 		return (0);
 	if (cs->subtyp == SCT_1) {
-		while ((dev_a8 = pci_find_device(PCI_VENDOR_ID_PLX,
+		while ((dev_a8 = hisax_find_pci_device(PCI_VENDOR_ID_PLX,
 			PCI_DEVICE_ID_PLX_9050, dev_a8))) {
 			
 			sub_vendor_id = dev_a8->subsystem_vendor;
diff --git a/drivers/isdn/hisax/diva.c b/drivers/isdn/hisax/diva.c
index 0b0c2e5..dd51ad4 100644
--- a/drivers/isdn/hisax/diva.c
+++ b/drivers/isdn/hisax/diva.c
@@ -1148,7 +1148,6 @@ static int __devinit setup_diva_isapnp(struct IsdnCard *card)
 
 #endif	/* ISAPNP */
 
-#ifdef CONFIG_PCI_LEGACY
 static struct pci_dev *dev_diva __devinitdata = NULL;
 static struct pci_dev *dev_diva_u __devinitdata = NULL;
 static struct pci_dev *dev_diva201 __devinitdata = NULL;
@@ -1159,21 +1158,21 @@ static int __devinit setup_diva_pci(struct IsdnCard *card)
 	struct IsdnCardState *cs = card->cs;
 
 	cs->subtyp = 0;
-	if ((dev_diva = pci_find_device(PCI_VENDOR_ID_EICON,
+	if ((dev_diva = hisax_find_pci_device(PCI_VENDOR_ID_EICON,
 		PCI_DEVICE_ID_EICON_DIVA20, dev_diva))) {
 		if (pci_enable_device(dev_diva))
 			return(0);
 		cs->subtyp = DIVA_PCI;
 		cs->irq = dev_diva->irq;
 		cs->hw.diva.cfg_reg = pci_resource_start(dev_diva, 2);
-	} else if ((dev_diva_u = pci_find_device(PCI_VENDOR_ID_EICON,
+	} else if ((dev_diva_u = hisax_find_pci_device(PCI_VENDOR_ID_EICON,
 		PCI_DEVICE_ID_EICON_DIVA20_U, dev_diva_u))) {
 		if (pci_enable_device(dev_diva_u))
 			return(0);
 		cs->subtyp = DIVA_PCI;
 		cs->irq = dev_diva_u->irq;
 		cs->hw.diva.cfg_reg = pci_resource_start(dev_diva_u, 2);
-	} else if ((dev_diva201 = pci_find_device(PCI_VENDOR_ID_EICON,
+	} else if ((dev_diva201 = hisax_find_pci_device(PCI_VENDOR_ID_EICON,
 		PCI_DEVICE_ID_EICON_DIVA201, dev_diva201))) {
 		if (pci_enable_device(dev_diva201))
 			return(0);
@@ -1183,7 +1182,7 @@ static int __devinit setup_diva_pci(struct IsdnCard *card)
 			(ulong) ioremap(pci_resource_start(dev_diva201, 0), 4096);
 		cs->hw.diva.cfg_reg =
 			(ulong) ioremap(pci_resource_start(dev_diva201, 1), 4096);
-	} else if ((dev_diva202 = pci_find_device(PCI_VENDOR_ID_EICON,
+	} else if ((dev_diva202 = hisax_find_pci_device(PCI_VENDOR_ID_EICON,
 		PCI_DEVICE_ID_EICON_DIVA202, dev_diva202))) {
 		if (pci_enable_device(dev_diva202))
 			return(0);
@@ -1229,15 +1228,6 @@ static int __devinit setup_diva_pci(struct IsdnCard *card)
 	return (1);		/* card found */
 }
 
-#else	/* if !CONFIG_PCI_LEGACY */
-
-static int __devinit setup_diva_pci(struct IsdnCard *card)
-{
-	return (-1);	/* card not found; continue search */
-}
-
-#endif	/* CONFIG_PCI_LEGACY */
-
 int __devinit
 setup_diva(struct IsdnCard *card)
 {
diff --git a/drivers/isdn/hisax/elsa.c b/drivers/isdn/hisax/elsa.c
index aa29d1c..71aa8a1 100644
--- a/drivers/isdn/hisax/elsa.c
+++ b/drivers/isdn/hisax/elsa.c
@@ -1025,7 +1025,6 @@ setup_elsa_pcmcia(struct IsdnCard *card)
 	       cs->irq);
 }
 
-#ifdef CONFIG_PCI_LEGACY
 static 	struct pci_dev *dev_qs1000 __devinitdata = NULL;
 static 	struct pci_dev *dev_qs3000 __devinitdata = NULL;
 
@@ -1035,7 +1034,7 @@ setup_elsa_pci(struct IsdnCard *card)
 	struct IsdnCardState *cs = card->cs;
 
 	cs->subtyp = 0;
-	if ((dev_qs1000 = pci_find_device(PCI_VENDOR_ID_ELSA,
+	if ((dev_qs1000 = hisax_find_pci_device(PCI_VENDOR_ID_ELSA,
 		PCI_DEVICE_ID_ELSA_MICROLINK, dev_qs1000))) {
 		if (pci_enable_device(dev_qs1000))
 			return(0);
@@ -1043,7 +1042,7 @@ setup_elsa_pci(struct IsdnCard *card)
 		cs->irq = dev_qs1000->irq;
 		cs->hw.elsa.cfg = pci_resource_start(dev_qs1000, 1);
 		cs->hw.elsa.base = pci_resource_start(dev_qs1000, 3);
-	} else if ((dev_qs3000 = pci_find_device(PCI_VENDOR_ID_ELSA,
+	} else if ((dev_qs3000 = hisax_find_pci_device(PCI_VENDOR_ID_ELSA,
 		PCI_DEVICE_ID_ELSA_QS3000, dev_qs3000))) {
 		if (pci_enable_device(dev_qs3000))
 			return(0);
@@ -1086,15 +1085,6 @@ setup_elsa_pci(struct IsdnCard *card)
 	return (1);
 }
 
-#else
-
-static int __devinit
-setup_elsa_pci(struct IsdnCard *card)
-{
-	return (1);
-}
-#endif /* CONFIG_PCI_LEGACY */
-
 static int __devinit
 setup_elsa_common(struct IsdnCard *card)
 {
diff --git a/drivers/isdn/hisax/enternow_pci.c b/drivers/isdn/hisax/enternow_pci.c
index 39f421e..26264ab 100644
--- a/drivers/isdn/hisax/enternow_pci.c
+++ b/drivers/isdn/hisax/enternow_pci.c
@@ -406,7 +406,7 @@ setup_enternow_pci(struct IsdnCard *card)
 
 	for ( ;; )
 	{
-		if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET,
+		if ((dev_netjet = hisax_find_pci_device(PCI_VENDOR_ID_TIGERJET,
 			PCI_DEVICE_ID_TIGERJET_300,  dev_netjet))) {
 			ret = en_pci_probe(dev_netjet, cs);
 			if (!ret)
diff --git a/drivers/isdn/hisax/gazel.c b/drivers/isdn/hisax/gazel.c
index 0ea3b46..8a6fd8b 100644
--- a/drivers/isdn/hisax/gazel.c
+++ b/drivers/isdn/hisax/gazel.c
@@ -531,7 +531,6 @@ setup_gazelisa(struct IsdnCard *card, struct IsdnCardState *cs)
 	return (0);
 }
 
-#ifdef CONFIG_PCI_LEGACY
 static struct pci_dev *dev_tel __devinitdata = NULL;
 
 static int __devinit
@@ -546,7 +545,7 @@ setup_gazelpci(struct IsdnCardState *cs)
 	found = 0;
 	seekcard = PCI_DEVICE_ID_PLX_R685;
 	for (nbseek = 0; nbseek < 4; nbseek++) {
-		if ((dev_tel = pci_find_device(PCI_VENDOR_ID_PLX,
+		if ((dev_tel = hisax_find_pci_device(PCI_VENDOR_ID_PLX,
 					seekcard, dev_tel))) {
 			if (pci_enable_device(dev_tel))
 				return 1;
@@ -620,7 +619,6 @@ setup_gazelpci(struct IsdnCardState *cs)
 
 	return (0);
 }
-#endif /* CONFIG_PCI_LEGACY */
 
 int __devinit
 setup_gazel(struct IsdnCard *card)
@@ -639,14 +637,8 @@ setup_gazel(struct IsdnCard *card)
 		if (setup_gazelisa(card, cs))
 			return (0);
 	} else {
-
-#ifdef CONFIG_PCI_LEGACY
 		if (setup_gazelpci(cs))
 			return (0);
-#else
-		printk(KERN_WARNING "Gazel: Card PCI requested and NO_PCI_BIOS, unable to config\n");
-		return (0);
-#endif				/* CONFIG_PCI */
 	}
 
 	if (reserve_regions(card, cs)) {
diff --git a/drivers/isdn/hisax/hfc_pci.c b/drivers/isdn/hisax/hfc_pci.c
index 1091473..917cc84 100644
--- a/drivers/isdn/hisax/hfc_pci.c
+++ b/drivers/isdn/hisax/hfc_pci.c
@@ -1658,7 +1658,7 @@ setup_hfcpci(struct IsdnCard *card)
 
 	i = 0;
 	while (id_list[i].vendor_id) {
-		tmp_hfcpci = pci_find_device(id_list[i].vendor_id,
+		tmp_hfcpci = hisax_find_pci_device(id_list[i].vendor_id,
 					     id_list[i].device_id,
 					     dev_hfcpci);
 		i++;
diff --git a/drivers/isdn/hisax/hisax.h b/drivers/isdn/hisax/hisax.h
index 0685c19..832a878 100644
--- a/drivers/isdn/hisax/hisax.h
+++ b/drivers/isdn/hisax/hisax.h
@@ -1323,3 +1323,26 @@ void release_tei(struct IsdnCardState *cs);
 char *HiSax_getrev(const char *revision);
 int TeiNew(void);
 void TeiFree(void);
+
+#ifdef CONFIG_PCI
+
+#include <linux/pci.h>
+
+/* adaptation wrapper for old usage
+ * WARNING! This is unfit for use in a PCI hotplug environment,
+ * as the returned PCI device can disappear at any moment in time.
+ * Callers should be converted to use pci_get_device() instead.
+ */
+static inline struct pci_dev *hisax_find_pci_device(unsigned int vendor,
+						    unsigned int device,
+						    struct pci_dev *from)
+{
+	struct pci_dev *pdev;
+
+	pci_dev_get(from);
+	pdev = pci_get_subsys(vendor, device, PCI_ANY_ID, PCI_ANY_ID, from);
+	pci_dev_put(pdev);
+	return pdev;
+}
+
+#endif
diff --git a/drivers/isdn/hisax/niccy.c b/drivers/isdn/hisax/niccy.c
index ef00633..91c4241 100644
--- a/drivers/isdn/hisax/niccy.c
+++ b/drivers/isdn/hisax/niccy.c
@@ -297,12 +297,11 @@ int __devinit setup_niccy(struct IsdnCard *card)
 			return 0;
 		}
 	} else {
-#ifdef CONFIG_PCI_LEGACY
 		static struct pci_dev *niccy_dev __devinitdata;
 
 		u_int pci_ioaddr;
 		cs->subtyp = 0;
-		if ((niccy_dev = pci_find_device(PCI_VENDOR_ID_SATSAGEM,
+		if ((niccy_dev = hisax_find_pci_device(PCI_VENDOR_ID_SATSAGEM,
 						 PCI_DEVICE_ID_SATSAGEM_NICCY,
 						 niccy_dev))) {
 			if (pci_enable_device(niccy_dev))
@@ -350,11 +349,6 @@ int __devinit setup_niccy(struct IsdnCard *card)
 			release_region(cs->hw.niccy.isac, 4);
 			return 0;
 		}
-#else
-		printk(KERN_WARNING "Niccy: io0 0 and NO_PCI_BIOS\n");
-		printk(KERN_WARNING "Niccy: unable to config NICCY PCI\n");
-		return 0;
-#endif				/* CONFIG_PCI_LEGACY */
 	}
 	printk(KERN_INFO "HiSax: NICCY %s config irq:%d data:0x%X ale:0x%X\n",
 		(cs->subtyp == 1) ? "PnP" : "PCI",
diff --git a/drivers/isdn/hisax/nj_s.c b/drivers/isdn/hisax/nj_s.c
index 8d36ccc..2344e7b 100644
--- a/drivers/isdn/hisax/nj_s.c
+++ b/drivers/isdn/hisax/nj_s.c
@@ -276,7 +276,7 @@ setup_netjet_s(struct IsdnCard *card)
 
 	for ( ;; )
 	{
-		if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET,
+		if ((dev_netjet = hisax_find_pci_device(PCI_VENDOR_ID_TIGERJET,
 			PCI_DEVICE_ID_TIGERJET_300,  dev_netjet))) {
 			ret = njs_pci_probe(dev_netjet, cs);
 			if (!ret)
diff --git a/drivers/isdn/hisax/nj_u.c b/drivers/isdn/hisax/nj_u.c
index d306c94..095e974 100644
--- a/drivers/isdn/hisax/nj_u.c
+++ b/drivers/isdn/hisax/nj_u.c
@@ -240,7 +240,7 @@ setup_netjet_u(struct IsdnCard *card)
 
 	for ( ;; )
 	{
-		if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET,
+		if ((dev_netjet = hisax_find_pci_device(PCI_VENDOR_ID_TIGERJET,
 			PCI_DEVICE_ID_TIGERJET_300,  dev_netjet))) {
 			ret = nju_pci_probe(dev_netjet, cs);
 			if (!ret)
diff --git a/drivers/isdn/hisax/sedlbauer.c b/drivers/isdn/hisax/sedlbauer.c
index 5569a52..b90abd9 100644
--- a/drivers/isdn/hisax/sedlbauer.c
+++ b/drivers/isdn/hisax/sedlbauer.c
@@ -598,7 +598,6 @@ setup_sedlbauer_isapnp(struct IsdnCard *card, int *bytecnt)
 }
 #endif /* __ISAPNP__ */
 
-#ifdef CONFIG_PCI_LEGACY
 static struct pci_dev *dev_sedl __devinitdata = NULL;
 
 static int __devinit
@@ -607,7 +606,7 @@ setup_sedlbauer_pci(struct IsdnCard *card)
 	struct IsdnCardState *cs = card->cs;
 	u16 sub_vendor_id, sub_id;
 
-	if ((dev_sedl = pci_find_device(PCI_VENDOR_ID_TIGERJET,
+	if ((dev_sedl = hisax_find_pci_device(PCI_VENDOR_ID_TIGERJET,
 			PCI_DEVICE_ID_TIGERJET_100, dev_sedl))) {
 		if (pci_enable_device(dev_sedl))
 			return(0);
@@ -665,16 +664,6 @@ setup_sedlbauer_pci(struct IsdnCard *card)
 	return (1);
 }
 
-#else
-
-static int __devinit
-setup_sedlbauer_pci(struct IsdnCard *card)
-{
-	return (1);
-}
-
-#endif /* CONFIG_PCI_LEGACY */
-
 int __devinit
 setup_sedlbauer(struct IsdnCard *card)
 {
diff --git a/drivers/isdn/hisax/telespci.c b/drivers/isdn/hisax/telespci.c
index 28b08de..b85ceb3 100644
--- a/drivers/isdn/hisax/telespci.c
+++ b/drivers/isdn/hisax/telespci.c
@@ -300,7 +300,7 @@ setup_telespci(struct IsdnCard *card)
 	if (cs->typ != ISDN_CTYPE_TELESPCI)
 		return (0);
 
-	if ((dev_tel = pci_find_device (PCI_VENDOR_ID_ZORAN, PCI_DEVICE_ID_ZORAN_36120, dev_tel))) {
+	if ((dev_tel = hisax_find_pci_device (PCI_VENDOR_ID_ZORAN, PCI_DEVICE_ID_ZORAN_36120, dev_tel))) {
 		if (pci_enable_device(dev_tel))
 			return(0);
 		cs->irq = dev_tel->irq;
diff --git a/drivers/isdn/hisax/w6692.c b/drivers/isdn/hisax/w6692.c
index c4d862c..9d6e864 100644
--- a/drivers/isdn/hisax/w6692.c
+++ b/drivers/isdn/hisax/w6692.c
@@ -1007,7 +1007,7 @@ setup_w6692(struct IsdnCard *card)
 		return (0);
 
 	while (id_list[id_idx].vendor_id) {
-		dev_w6692 = pci_find_device(id_list[id_idx].vendor_id,
+		dev_w6692 = hisax_find_pci_device(id_list[id_idx].vendor_id,
 					    id_list[id_idx].device_id,
 					    dev_w6692);
 		if (dev_w6692) {
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index b1ecefa..7858a11 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -21,17 +21,6 @@ config PCI_MSI
 
 	   If you don't know what to do here, say N.
 
-config PCI_LEGACY
-	bool "Enable deprecated pci_find_* API"
-	depends on PCI
-	default y
-	help
-	  Say Y here if you want to include support for the deprecated
-	  pci_find_device() API.  Most drivers have been converted over
-	  to using the proper hotplug APIs, so this option serves to
-	  include/exclude only a few drivers that are still using this
-	  API.
-
 config PCI_DEBUG
 	bool "PCI Debugging"
 	depends on PCI && DEBUG_KERNEL
diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index 4df48d5..f635608 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -8,9 +8,6 @@ obj-y		+= access.o bus.o probe.o remove.o pci.o quirks.o \
 obj-$(CONFIG_PROC_FS) += proc.o
 obj-$(CONFIG_SYSFS) += slot.o
 
-obj-$(CONFIG_PCI_LEGACY) += legacy.o
-CFLAGS_legacy.o += -Wno-deprecated-declarations
-
 # Build PCI Express stuff if needed
 obj-$(CONFIG_PCIEPORTBUS) += pcie/
 
diff --git a/drivers/pci/legacy.c b/drivers/pci/legacy.c
deleted file mode 100644
index 871f65c..0000000
--- a/drivers/pci/legacy.c
+++ /dev/null
@@ -1,34 +0,0 @@
-#include <linux/init.h>
-#include <linux/pci.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include "pci.h"
-
-/**
- * pci_find_device - begin or continue searching for a PCI device by vendor/device id
- * @vendor: PCI vendor id to match, or %PCI_ANY_ID to match all vendor ids
- * @device: PCI device id to match, or %PCI_ANY_ID to match all device ids
- * @from: Previous PCI device found in search, or %NULL for new search.
- *
- * Iterates through the list of known PCI devices.  If a PCI device is found
- * with a matching @vendor and @device, a pointer to its device structure is
- * returned.  Otherwise, %NULL is returned.
- * A new search is initiated by passing %NULL as the @from argument.
- * Otherwise if @from is not %NULL, searches continue from next device
- * on the global list.
- *
- * NOTE: Do not use this function any more; use pci_get_device() instead, as
- * the PCI device returned by this function can disappear at any moment in
- * time.
- */
-struct pci_dev *pci_find_device(unsigned int vendor, unsigned int device,
-				struct pci_dev *from)
-{
-	struct pci_dev *pdev;
-
-	pci_dev_get(from);
-	pdev = pci_get_subsys(vendor, device, PCI_ANY_ID, PCI_ANY_ID, from);
-	pci_dev_put(pdev);
-	return pdev;
-}
-EXPORT_SYMBOL(pci_find_device);
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 174e539..dd9682c 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -615,12 +615,6 @@ extern void pci_sort_breadthfirst(void);
 
 /* Generic PCI functions exported to card drivers */
 
-#ifdef CONFIG_PCI_LEGACY
-struct pci_dev __deprecated *pci_find_device(unsigned int vendor,
-					     unsigned int device,
-					     struct pci_dev *from);
-#endif /* CONFIG_PCI_LEGACY */
-
 enum pci_lost_interrupt_reason {
 	PCI_LOST_IRQ_NO_INFORMATION = 0,
 	PCI_LOST_IRQ_DISABLE_MSI,
@@ -973,13 +967,6 @@ static inline int pci_proc_domain(struct pci_bus *bus)
 _PCI_NOP_ALL(read, *)
 _PCI_NOP_ALL(write,)
 
-static inline struct pci_dev *pci_find_device(unsigned int vendor,
-					      unsigned int device,
-					      struct pci_dev *from)
-{
-	return NULL;
-}
-
 static inline struct pci_dev *pci_get_device(unsigned int vendor,
 					     unsigned int device,
 					     struct pci_dev *from)
-- 
1.6.5.3.298.g39add

Re: [PATCH/REPOST] pci: push deprecated pci_find_device() function to last user

[Jesse Barnes]

On Thu, 14 Jan 2010 23:18:41 +0100 (CET)
Tilman Schmidt <tilman@imap.cc> wrote:

> Am 14.01.2010 17:28 schrieb Jesse Barnes:
> > I can take it, but I lost the original patch.  Tilman, can you
> > resend?
> 
> Sure, here you are:
> 
> Subject: [PATCH] pci: push deprecated pci_find_device() function to
> last user
> 
> The ISDN4Linux HiSax driver family contains the last remaining users
> of the deprecated pci_find_device() function. This patch creates a
> private copy of that function in HiSax, and removes the now unused
> global function together with its controlling configuration option,
> CONFIG_PCI_LEGACY.
> 
> Impact: code reorganization, no functional change
> Signed-off-by: Tilman Schmidt <tilman@imap.cc>
> ---
> Note: This patch is not, nor does it intend to be, checkpatch.pl
> clean. The issues checkpatch.pl reports on it were already present
> before, and are unrelated to the topic of this patch.

Applied to my linux-next branch, thanks Tilman.

-- 
Jesse Barnes, Intel Open Source Technology Center

Re: [PATCH/REPOST] pci: push deprecated pci_find_device() function to last user

[Stephen Rothwell]

[-- Attachment #1: Type: text/plain, Size: 416 bytes --]

Hi all,

On Fri, 15 Jan 2010 10:08:30 -0800 Jesse Barnes <jbarnes@virtuousgeek.org> wrote:
>
> Applied to my linux-next branch, thanks Tilman.

Thanks all, this will reduce the x86_64 allmodconfig build warnings by
between 1/3 and 1/2.  (Cheering can be heard all over the IBM Canberra
office :-))

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

[-- Attachment #2: Type: application/pgp-signature, Size: 198 bytes --]

[PATCH/v2] pci: push deprecated pci_find_device() function to last user

[Tilman Schmidt]

The ISDN4Linux HiSax driver family contains the last remaining users
of the deprecated pci_find_device() function. This patch creates a
private copy of that function in HiSax, and removes the now unused
global function together with its controlling configuration option,
CONFIG_PCI_LEGACY.

Impact: code reorganization, no functional change
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
---
Revised to fix !CONFIG_PCI case for combined ISAPNP/PCI drivers.

 drivers/isdn/hisax/Kconfig        |   18 +++++++++---------
 drivers/isdn/hisax/avm_pci.c      |    6 +++---
 drivers/isdn/hisax/bkm_a4t.c      |    2 +-
 drivers/isdn/hisax/bkm_a8.c       |    2 +-
 drivers/isdn/hisax/diva.c         |   14 +++++++-------
 drivers/isdn/hisax/elsa.c         |    8 ++++----
 drivers/isdn/hisax/enternow_pci.c |    2 +-
 drivers/isdn/hisax/gazel.c        |    8 ++++----
 drivers/isdn/hisax/hfc_pci.c      |    2 +-
 drivers/isdn/hisax/hisax.h        |   23 +++++++++++++++++++++++
 drivers/isdn/hisax/niccy.c        |    6 +++---
 drivers/isdn/hisax/nj_s.c         |    2 +-
 drivers/isdn/hisax/nj_u.c         |    2 +-
 drivers/isdn/hisax/sedlbauer.c    |    6 +++---
 drivers/isdn/hisax/telespci.c     |    2 +-
 drivers/isdn/hisax/w6692.c        |    2 +-
 drivers/pci/Kconfig               |   11 -----------
 drivers/pci/Makefile              |    3 ---
 drivers/pci/legacy.c              |   34 ----------------------------------
 include/linux/pci.h               |   13 -------------
 20 files changed, 64 insertions(+), 102 deletions(-)
 delete mode 100644 drivers/pci/legacy.c

diff --git a/drivers/isdn/hisax/Kconfig b/drivers/isdn/hisax/Kconfig
index 3464ebc..452fde9 100644
--- a/drivers/isdn/hisax/Kconfig
+++ b/drivers/isdn/hisax/Kconfig
@@ -109,7 +109,7 @@ config HISAX_16_3
 
 config HISAX_TELESPCI
 	bool "Teles PCI"
-	depends on PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the Teles PCI.
 	  See <file:Documentation/isdn/README.HiSax> on how to configure it.
@@ -237,7 +237,7 @@ config HISAX_MIC
 
 config HISAX_NETJET
 	bool "NETjet card"
-	depends on PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the NetJet from Traverse
 	  Technologies.
@@ -248,7 +248,7 @@ config HISAX_NETJET
 
 config HISAX_NETJET_U
 	bool "NETspider U card"
-	depends on PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the Netspider U interface ISDN card
 	  from Traverse Technologies.
@@ -287,7 +287,7 @@ config HISAX_HSTSAPHIR
 
 config HISAX_BKM_A4T
 	bool "Telekom A4T card"
-	depends on PCI && PCI_LEGACY
+	depends on PCI
 	help
 	  This enables HiSax support for the Telekom A4T card.
 
@@ -297,7 +297,7 @@ config HISAX_BKM_A4T
 
 config HISAX_SCT_QUADRO
 	bool "Scitel Quadro card"
-	depends on PCI && PCI_LEGACY
+	depends on PCI
 	help
 	  This enables HiSax support for the Scitel Quadro card.
 
@@ -316,7 +316,7 @@ config HISAX_GAZEL
 
 config HISAX_HFC_PCI
 	bool "HFC PCI-Bus cards"
-	depends on PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the HFC-S PCI 2BDS0 based cards.
 
@@ -325,7 +325,7 @@ config HISAX_HFC_PCI
 
 config HISAX_W6692
 	bool "Winbond W6692 based cards"
-	depends on PCI && PCI_LEGACY
+	depends on PCI
 	help
 	  This enables HiSax support for Winbond W6692 based PCI ISDN cards.
 
@@ -341,7 +341,7 @@ config HISAX_HFC_SX
 
 config HISAX_ENTERNOW_PCI
 	bool "Formula-n enter:now PCI card"
-	depends on HISAX_NETJET && PCI && PCI_LEGACY && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+	depends on HISAX_NETJET && PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
 	help
 	  This enables HiSax support for the Formula-n enter:now PCI
 	  ISDN card.
@@ -412,7 +412,7 @@ config HISAX_HFC4S8S
 
 config HISAX_FRITZ_PCIPNP
 	tristate "AVM Fritz!Card PCI/PCIv2/PnP support (EXPERIMENTAL)"
-	depends on PCI && PCI_LEGACY && EXPERIMENTAL
+	depends on PCI && EXPERIMENTAL
 	help
 	  This enables the driver for the AVM Fritz!Card PCI,
 	  Fritz!Card PCI v2 and Fritz!Card PnP.
diff --git a/drivers/isdn/hisax/avm_pci.c b/drivers/isdn/hisax/avm_pci.c
index 7cabc5a..14295a1 100644
--- a/drivers/isdn/hisax/avm_pci.c
+++ b/drivers/isdn/hisax/avm_pci.c
@@ -822,7 +822,7 @@ static int __devinit avm_pnp_setup(struct IsdnCardState *cs)
 
 #endif /* __ISAPNP__ */
 
-#ifndef CONFIG_PCI_LEGACY
+#ifndef CONFIG_PCI
 
 static int __devinit avm_pci_setup(struct IsdnCardState *cs)
 {
@@ -835,7 +835,7 @@ static struct pci_dev *dev_avm __devinitdata = NULL;
 
 static int __devinit avm_pci_setup(struct IsdnCardState *cs)
 {
-	if ((dev_avm = pci_find_device(PCI_VENDOR_ID_AVM,
+	if ((dev_avm = hisax_find_pci_device(PCI_VENDOR_ID_AVM,
 		PCI_DEVICE_ID_AVM_A1, dev_avm))) {
 
 		if (pci_enable_device(dev_avm))
@@ -864,7 +864,7 @@ static int __devinit avm_pci_setup(struct IsdnCardState *cs)
 	return (1);
 }
 
-#endif /* CONFIG_PCI_LEGACY */
+#endif /* CONFIG_PCI */
 
 int __devinit
 setup_avm_pcipnp(struct IsdnCard *card)
diff --git a/drivers/isdn/hisax/bkm_a4t.c b/drivers/isdn/hisax/bkm_a4t.c
index 9ca2ee5..9f2009c 100644
--- a/drivers/isdn/hisax/bkm_a4t.c
+++ b/drivers/isdn/hisax/bkm_a4t.c
@@ -340,7 +340,7 @@ setup_bkm_a4t(struct IsdnCard *card)
 	} else
 		return (0);
 
-	while ((dev_a4t = pci_find_device(PCI_VENDOR_ID_ZORAN,
+	while ((dev_a4t = hisax_find_pci_device(PCI_VENDOR_ID_ZORAN,
 		PCI_DEVICE_ID_ZORAN_36120, dev_a4t))) {
 		ret = a4t_pci_probe(dev_a4t, cs, &found, &pci_memaddr);
 		if (!ret)
diff --git a/drivers/isdn/hisax/bkm_a8.c b/drivers/isdn/hisax/bkm_a8.c
index e1ff471..e775706 100644
--- a/drivers/isdn/hisax/bkm_a8.c
+++ b/drivers/isdn/hisax/bkm_a8.c
@@ -301,7 +301,7 @@ setup_sct_quadro(struct IsdnCard *card)
 		(sub_vendor_id != PCI_VENDOR_ID_BERKOM)))
 		return (0);
 	if (cs->subtyp == SCT_1) {
-		while ((dev_a8 = pci_find_device(PCI_VENDOR_ID_PLX,
+		while ((dev_a8 = hisax_find_pci_device(PCI_VENDOR_ID_PLX,
 			PCI_DEVICE_ID_PLX_9050, dev_a8))) {
 			
 			sub_vendor_id = dev_a8->subsystem_vendor;
diff --git a/drivers/isdn/hisax/diva.c b/drivers/isdn/hisax/diva.c
index 0b0c2e5..780da9b 100644
--- a/drivers/isdn/hisax/diva.c
+++ b/drivers/isdn/hisax/diva.c
@@ -1148,7 +1148,7 @@ static int __devinit setup_diva_isapnp(struct IsdnCard *card)
 
 #endif	/* ISAPNP */
 
-#ifdef CONFIG_PCI_LEGACY
+#ifdef CONFIG_PCI
 static struct pci_dev *dev_diva __devinitdata = NULL;
 static struct pci_dev *dev_diva_u __devinitdata = NULL;
 static struct pci_dev *dev_diva201 __devinitdata = NULL;
@@ -1159,21 +1159,21 @@ static int __devinit setup_diva_pci(struct IsdnCard *card)
 	struct IsdnCardState *cs = card->cs;
 
 	cs->subtyp = 0;
-	if ((dev_diva = pci_find_device(PCI_VENDOR_ID_EICON,
+	if ((dev_diva = hisax_find_pci_device(PCI_VENDOR_ID_EICON,
 		PCI_DEVICE_ID_EICON_DIVA20, dev_diva))) {
 		if (pci_enable_device(dev_diva))
 			return(0);
 		cs->subtyp = DIVA_PCI;
 		cs->irq = dev_diva->irq;
 		cs->hw.diva.cfg_reg = pci_resource_start(dev_diva, 2);
-	} else if ((dev_diva_u = pci_find_device(PCI_VENDOR_ID_EICON,
+	} else if ((dev_diva_u = hisax_find_pci_device(PCI_VENDOR_ID_EICON,
 		PCI_DEVICE_ID_EICON_DIVA20_U, dev_diva_u))) {
 		if (pci_enable_device(dev_diva_u))
 			return(0);
 		cs->subtyp = DIVA_PCI;
 		cs->irq = dev_diva_u->irq;
 		cs->hw.diva.cfg_reg = pci_resource_start(dev_diva_u, 2);
-	} else if ((dev_diva201 = pci_find_device(PCI_VENDOR_ID_EICON,
+	} else if ((dev_diva201 = hisax_find_pci_device(PCI_VENDOR_ID_EICON,
 		PCI_DEVICE_ID_EICON_DIVA201, dev_diva201))) {
 		if (pci_enable_device(dev_diva201))
 			return(0);
@@ -1183,7 +1183,7 @@ static int __devinit setup_diva_pci(struct IsdnCard *card)
 			(ulong) ioremap(pci_resource_start(dev_diva201, 0), 4096);
 		cs->hw.diva.cfg_reg =
 			(ulong) ioremap(pci_resource_start(dev_diva201, 1), 4096);
-	} else if ((dev_diva202 = pci_find_device(PCI_VENDOR_ID_EICON,
+	} else if ((dev_diva202 = hisax_find_pci_device(PCI_VENDOR_ID_EICON,
 		PCI_DEVICE_ID_EICON_DIVA202, dev_diva202))) {
 		if (pci_enable_device(dev_diva202))
 			return(0);
@@ -1229,14 +1229,14 @@ static int __devinit setup_diva_pci(struct IsdnCard *card)
 	return (1);		/* card found */
 }
 
-#else	/* if !CONFIG_PCI_LEGACY */
+#else	/* if !CONFIG_PCI */
 
 static int __devinit setup_diva_pci(struct IsdnCard *card)
 {
 	return (-1);	/* card not found; continue search */
 }
 
-#endif	/* CONFIG_PCI_LEGACY */
+#endif	/* CONFIG_PCI */
 
 int __devinit
 setup_diva(struct IsdnCard *card)
diff --git a/drivers/isdn/hisax/elsa.c b/drivers/isdn/hisax/elsa.c
index aa29d1c..23c41fc 100644
--- a/drivers/isdn/hisax/elsa.c
+++ b/drivers/isdn/hisax/elsa.c
@@ -1025,7 +1025,7 @@ setup_elsa_pcmcia(struct IsdnCard *card)
 	       cs->irq);
 }
 
-#ifdef CONFIG_PCI_LEGACY
+#ifdef CONFIG_PCI
 static 	struct pci_dev *dev_qs1000 __devinitdata = NULL;
 static 	struct pci_dev *dev_qs3000 __devinitdata = NULL;
 
@@ -1035,7 +1035,7 @@ setup_elsa_pci(struct IsdnCard *card)
 	struct IsdnCardState *cs = card->cs;
 
 	cs->subtyp = 0;
-	if ((dev_qs1000 = pci_find_device(PCI_VENDOR_ID_ELSA,
+	if ((dev_qs1000 = hisax_find_pci_device(PCI_VENDOR_ID_ELSA,
 		PCI_DEVICE_ID_ELSA_MICROLINK, dev_qs1000))) {
 		if (pci_enable_device(dev_qs1000))
 			return(0);
@@ -1043,7 +1043,7 @@ setup_elsa_pci(struct IsdnCard *card)
 		cs->irq = dev_qs1000->irq;
 		cs->hw.elsa.cfg = pci_resource_start(dev_qs1000, 1);
 		cs->hw.elsa.base = pci_resource_start(dev_qs1000, 3);
-	} else if ((dev_qs3000 = pci_find_device(PCI_VENDOR_ID_ELSA,
+	} else if ((dev_qs3000 = hisax_find_pci_device(PCI_VENDOR_ID_ELSA,
 		PCI_DEVICE_ID_ELSA_QS3000, dev_qs3000))) {
 		if (pci_enable_device(dev_qs3000))
 			return(0);
@@ -1093,7 +1093,7 @@ setup_elsa_pci(struct IsdnCard *card)
 {
 	return (1);
 }
-#endif /* CONFIG_PCI_LEGACY */
+#endif /* CONFIG_PCI */
 
 static int __devinit
 setup_elsa_common(struct IsdnCard *card)
diff --git a/drivers/isdn/hisax/enternow_pci.c b/drivers/isdn/hisax/enternow_pci.c
index 39f421e..26264ab 100644
--- a/drivers/isdn/hisax/enternow_pci.c
+++ b/drivers/isdn/hisax/enternow_pci.c
@@ -406,7 +406,7 @@ setup_enternow_pci(struct IsdnCard *card)
 
 	for ( ;; )
 	{
-		if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET,
+		if ((dev_netjet = hisax_find_pci_device(PCI_VENDOR_ID_TIGERJET,
 			PCI_DEVICE_ID_TIGERJET_300,  dev_netjet))) {
 			ret = en_pci_probe(dev_netjet, cs);
 			if (!ret)
diff --git a/drivers/isdn/hisax/gazel.c b/drivers/isdn/hisax/gazel.c
index 0ea3b46..353982f 100644
--- a/drivers/isdn/hisax/gazel.c
+++ b/drivers/isdn/hisax/gazel.c
@@ -531,7 +531,7 @@ setup_gazelisa(struct IsdnCard *card, struct IsdnCardState *cs)
 	return (0);
 }
 
-#ifdef CONFIG_PCI_LEGACY
+#ifdef CONFIG_PCI
 static struct pci_dev *dev_tel __devinitdata = NULL;
 
 static int __devinit
@@ -546,7 +546,7 @@ setup_gazelpci(struct IsdnCardState *cs)
 	found = 0;
 	seekcard = PCI_DEVICE_ID_PLX_R685;
 	for (nbseek = 0; nbseek < 4; nbseek++) {
-		if ((dev_tel = pci_find_device(PCI_VENDOR_ID_PLX,
+		if ((dev_tel = hisax_find_pci_device(PCI_VENDOR_ID_PLX,
 					seekcard, dev_tel))) {
 			if (pci_enable_device(dev_tel))
 				return 1;
@@ -620,7 +620,7 @@ setup_gazelpci(struct IsdnCardState *cs)
 
 	return (0);
 }
-#endif /* CONFIG_PCI_LEGACY */
+#endif /* CONFIG_PCI */
 
 int __devinit
 setup_gazel(struct IsdnCard *card)
@@ -640,7 +640,7 @@ setup_gazel(struct IsdnCard *card)
 			return (0);
 	} else {
 
-#ifdef CONFIG_PCI_LEGACY
+#ifdef CONFIG_PCI
 		if (setup_gazelpci(cs))
 			return (0);
 #else
diff --git a/drivers/isdn/hisax/hfc_pci.c b/drivers/isdn/hisax/hfc_pci.c
index 1091473..917cc84 100644
--- a/drivers/isdn/hisax/hfc_pci.c
+++ b/drivers/isdn/hisax/hfc_pci.c
@@ -1658,7 +1658,7 @@ setup_hfcpci(struct IsdnCard *card)
 
 	i = 0;
 	while (id_list[i].vendor_id) {
-		tmp_hfcpci = pci_find_device(id_list[i].vendor_id,
+		tmp_hfcpci = hisax_find_pci_device(id_list[i].vendor_id,
 					     id_list[i].device_id,
 					     dev_hfcpci);
 		i++;
diff --git a/drivers/isdn/hisax/hisax.h b/drivers/isdn/hisax/hisax.h
index 0685c19..832a878 100644
--- a/drivers/isdn/hisax/hisax.h
+++ b/drivers/isdn/hisax/hisax.h
@@ -1323,3 +1323,26 @@ void release_tei(struct IsdnCardState *cs);
 char *HiSax_getrev(const char *revision);
 int TeiNew(void);
 void TeiFree(void);
+
+#ifdef CONFIG_PCI
+
+#include <linux/pci.h>
+
+/* adaptation wrapper for old usage
+ * WARNING! This is unfit for use in a PCI hotplug environment,
+ * as the returned PCI device can disappear at any moment in time.
+ * Callers should be converted to use pci_get_device() instead.
+ */
+static inline struct pci_dev *hisax_find_pci_device(unsigned int vendor,
+						    unsigned int device,
+						    struct pci_dev *from)
+{
+	struct pci_dev *pdev;
+
+	pci_dev_get(from);
+	pdev = pci_get_subsys(vendor, device, PCI_ANY_ID, PCI_ANY_ID, from);
+	pci_dev_put(pdev);
+	return pdev;
+}
+
+#endif
diff --git a/drivers/isdn/hisax/niccy.c b/drivers/isdn/hisax/niccy.c
index ef00633..ccaa6e1 100644
--- a/drivers/isdn/hisax/niccy.c
+++ b/drivers/isdn/hisax/niccy.c
@@ -297,12 +297,12 @@ int __devinit setup_niccy(struct IsdnCard *card)
 			return 0;
 		}
 	} else {
-#ifdef CONFIG_PCI_LEGACY
+#ifdef CONFIG_PCI
 		static struct pci_dev *niccy_dev __devinitdata;
 
 		u_int pci_ioaddr;
 		cs->subtyp = 0;
-		if ((niccy_dev = pci_find_device(PCI_VENDOR_ID_SATSAGEM,
+		if ((niccy_dev = hisax_find_pci_device(PCI_VENDOR_ID_SATSAGEM,
 						 PCI_DEVICE_ID_SATSAGEM_NICCY,
 						 niccy_dev))) {
 			if (pci_enable_device(niccy_dev))
@@ -354,7 +354,7 @@ int __devinit setup_niccy(struct IsdnCard *card)
 		printk(KERN_WARNING "Niccy: io0 0 and NO_PCI_BIOS\n");
 		printk(KERN_WARNING "Niccy: unable to config NICCY PCI\n");
 		return 0;
-#endif				/* CONFIG_PCI_LEGACY */
+#endif				/* CONFIG_PCI */
 	}
 	printk(KERN_INFO "HiSax: NICCY %s config irq:%d data:0x%X ale:0x%X\n",
 		(cs->subtyp == 1) ? "PnP" : "PCI",
diff --git a/drivers/isdn/hisax/nj_s.c b/drivers/isdn/hisax/nj_s.c
index 8d36ccc..2344e7b 100644
--- a/drivers/isdn/hisax/nj_s.c
+++ b/drivers/isdn/hisax/nj_s.c
@@ -276,7 +276,7 @@ setup_netjet_s(struct IsdnCard *card)
 
 	for ( ;; )
 	{
-		if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET,
+		if ((dev_netjet = hisax_find_pci_device(PCI_VENDOR_ID_TIGERJET,
 			PCI_DEVICE_ID_TIGERJET_300,  dev_netjet))) {
 			ret = njs_pci_probe(dev_netjet, cs);
 			if (!ret)
diff --git a/drivers/isdn/hisax/nj_u.c b/drivers/isdn/hisax/nj_u.c
index d306c94..095e974 100644
--- a/drivers/isdn/hisax/nj_u.c
+++ b/drivers/isdn/hisax/nj_u.c
@@ -240,7 +240,7 @@ setup_netjet_u(struct IsdnCard *card)
 
 	for ( ;; )
 	{
-		if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET,
+		if ((dev_netjet = hisax_find_pci_device(PCI_VENDOR_ID_TIGERJET,
 			PCI_DEVICE_ID_TIGERJET_300,  dev_netjet))) {
 			ret = nju_pci_probe(dev_netjet, cs);
 			if (!ret)
diff --git a/drivers/isdn/hisax/sedlbauer.c b/drivers/isdn/hisax/sedlbauer.c
index 5569a52..69dfc8d 100644
--- a/drivers/isdn/hisax/sedlbauer.c
+++ b/drivers/isdn/hisax/sedlbauer.c
@@ -598,7 +598,7 @@ setup_sedlbauer_isapnp(struct IsdnCard *card, int *bytecnt)
 }
 #endif /* __ISAPNP__ */
 
-#ifdef CONFIG_PCI_LEGACY
+#ifdef CONFIG_PCI
 static struct pci_dev *dev_sedl __devinitdata = NULL;
 
 static int __devinit
@@ -607,7 +607,7 @@ setup_sedlbauer_pci(struct IsdnCard *card)
 	struct IsdnCardState *cs = card->cs;
 	u16 sub_vendor_id, sub_id;
 
-	if ((dev_sedl = pci_find_device(PCI_VENDOR_ID_TIGERJET,
+	if ((dev_sedl = hisax_find_pci_device(PCI_VENDOR_ID_TIGERJET,
 			PCI_DEVICE_ID_TIGERJET_100, dev_sedl))) {
 		if (pci_enable_device(dev_sedl))
 			return(0);
@@ -673,7 +673,7 @@ setup_sedlbauer_pci(struct IsdnCard *card)
 	return (1);
 }
 
-#endif /* CONFIG_PCI_LEGACY */
+#endif /* CONFIG_PCI */
 
 int __devinit
 setup_sedlbauer(struct IsdnCard *card)
diff --git a/drivers/isdn/hisax/telespci.c b/drivers/isdn/hisax/telespci.c
index 28b08de..b85ceb3 100644
--- a/drivers/isdn/hisax/telespci.c
+++ b/drivers/isdn/hisax/telespci.c
@@ -300,7 +300,7 @@ setup_telespci(struct IsdnCard *card)
 	if (cs->typ != ISDN_CTYPE_TELESPCI)
 		return (0);
 
-	if ((dev_tel = pci_find_device (PCI_VENDOR_ID_ZORAN, PCI_DEVICE_ID_ZORAN_36120, dev_tel))) {
+	if ((dev_tel = hisax_find_pci_device (PCI_VENDOR_ID_ZORAN, PCI_DEVICE_ID_ZORAN_36120, dev_tel))) {
 		if (pci_enable_device(dev_tel))
 			return(0);
 		cs->irq = dev_tel->irq;
diff --git a/drivers/isdn/hisax/w6692.c b/drivers/isdn/hisax/w6692.c
index c4d862c..9d6e864 100644
--- a/drivers/isdn/hisax/w6692.c
+++ b/drivers/isdn/hisax/w6692.c
@@ -1007,7 +1007,7 @@ setup_w6692(struct IsdnCard *card)
 		return (0);
 
 	while (id_list[id_idx].vendor_id) {
-		dev_w6692 = pci_find_device(id_list[id_idx].vendor_id,
+		dev_w6692 = hisax_find_pci_device(id_list[id_idx].vendor_id,
 					    id_list[id_idx].device_id,
 					    dev_w6692);
 		if (dev_w6692) {
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index b1ecefa..7858a11 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -21,17 +21,6 @@ config PCI_MSI
 
 	   If you don't know what to do here, say N.
 
-config PCI_LEGACY
-	bool "Enable deprecated pci_find_* API"
-	depends on PCI
-	default y
-	help
-	  Say Y here if you want to include support for the deprecated
-	  pci_find_device() API.  Most drivers have been converted over
-	  to using the proper hotplug APIs, so this option serves to
-	  include/exclude only a few drivers that are still using this
-	  API.
-
 config PCI_DEBUG
 	bool "PCI Debugging"
 	depends on PCI && DEBUG_KERNEL
diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index 4df48d5..f635608 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -8,9 +8,6 @@ obj-y		+= access.o bus.o probe.o remove.o pci.o quirks.o \
 obj-$(CONFIG_PROC_FS) += proc.o
 obj-$(CONFIG_SYSFS) += slot.o
 
-obj-$(CONFIG_PCI_LEGACY) += legacy.o
-CFLAGS_legacy.o += -Wno-deprecated-declarations
-
 # Build PCI Express stuff if needed
 obj-$(CONFIG_PCIEPORTBUS) += pcie/
 
diff --git a/drivers/pci/legacy.c b/drivers/pci/legacy.c
deleted file mode 100644
index 871f65c..0000000
--- a/drivers/pci/legacy.c
+++ /dev/null
@@ -1,34 +0,0 @@
-#include <linux/init.h>
-#include <linux/pci.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include "pci.h"
-
-/**
- * pci_find_device - begin or continue searching for a PCI device by vendor/device id
- * @vendor: PCI vendor id to match, or %PCI_ANY_ID to match all vendor ids
- * @device: PCI device id to match, or %PCI_ANY_ID to match all device ids
- * @from: Previous PCI device found in search, or %NULL for new search.
- *
- * Iterates through the list of known PCI devices.  If a PCI device is found
- * with a matching @vendor and @device, a pointer to its device structure is
- * returned.  Otherwise, %NULL is returned.
- * A new search is initiated by passing %NULL as the @from argument.
- * Otherwise if @from is not %NULL, searches continue from next device
- * on the global list.
- *
- * NOTE: Do not use this function any more; use pci_get_device() instead, as
- * the PCI device returned by this function can disappear at any moment in
- * time.
- */
-struct pci_dev *pci_find_device(unsigned int vendor, unsigned int device,
-				struct pci_dev *from)
-{
-	struct pci_dev *pdev;
-
-	pci_dev_get(from);
-	pdev = pci_get_subsys(vendor, device, PCI_ANY_ID, PCI_ANY_ID, from);
-	pci_dev_put(pdev);
-	return pdev;
-}
-EXPORT_SYMBOL(pci_find_device);
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 174e539..dd9682c 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -615,12 +615,6 @@ extern void pci_sort_breadthfirst(void);
 
 /* Generic PCI functions exported to card drivers */
 
-#ifdef CONFIG_PCI_LEGACY
-struct pci_dev __deprecated *pci_find_device(unsigned int vendor,
-					     unsigned int device,
-					     struct pci_dev *from);
-#endif /* CONFIG_PCI_LEGACY */
-
 enum pci_lost_interrupt_reason {
 	PCI_LOST_IRQ_NO_INFORMATION = 0,
 	PCI_LOST_IRQ_DISABLE_MSI,
@@ -973,13 +967,6 @@ static inline int pci_proc_domain(struct pci_bus *bus)
 _PCI_NOP_ALL(read, *)
 _PCI_NOP_ALL(write,)
 
-static inline struct pci_dev *pci_find_device(unsigned int vendor,
-					      unsigned int device,
-					      struct pci_dev *from)
-{
-	return NULL;
-}
-
 static inline struct pci_dev *pci_get_device(unsigned int vendor,
 					     unsigned int device,
 					     struct pci_dev *from)
-- 
1.6.5.3.298.g39add

Re: Can we remove pci_find_device() yet?

[Tilman Schmidt]

On Thu, Jan 14, 2010 at 11:02:14AM +0000, Alan Cox wrote:
> > e.g. set some global variable that forbids device removal
> > and warn in the kernel log. In theory this could be also
> > done per device, but I guess that would be more effort.
> 
> There is a simpler way to do that, which is to just leak a reference in
> the hisax_find_pci_device hack. The pci_dev won't be going anywhere then.

Something like this? (On top of my previous patch introducing
hisax_find_pci_device in the first place.)

Subject: [PATCH RFC] isdn/hisax: intentionally leak a reference in hisax_find_pci_device

Take a reference to the returned pci_dev which will never be released.
Until the HiSax drivers are fixed for proper PCI hotplug support,
this appears as the lesser evil compared to the danger of the
structure being freed without the caller knowing it.

Impact: replacing a bug by another, less consequential one
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
---
 drivers/isdn/hisax/hisax.h |   13 +++++--------
 1 files changed, 5 insertions(+), 8 deletions(-)

diff --git a/drivers/isdn/hisax/hisax.h b/drivers/isdn/hisax/hisax.h
index 832a878..e459502 100644
--- a/drivers/isdn/hisax/hisax.h
+++ b/drivers/isdn/hisax/hisax.h
@@ -1328,21 +1328,18 @@ void TeiFree(void);
 
 #include <linux/pci.h>
 
-/* adaptation wrapper for old usage
- * WARNING! This is unfit for use in a PCI hotplug environment,
- * as the returned PCI device can disappear at any moment in time.
+/* This function replaces the former function pci_find_device().
+ * Unlike the latter, it takes a reference on the returned pci_dev,
+ * resulting in a reference leak. This is intentional and serves to
+ * prevent an untimely release of the PCI device structure.
  * Callers should be converted to use pci_get_device() instead.
  */
 static inline struct pci_dev *hisax_find_pci_device(unsigned int vendor,
 						    unsigned int device,
 						    struct pci_dev *from)
 {
-	struct pci_dev *pdev;
-
 	pci_dev_get(from);
-	pdev = pci_get_subsys(vendor, device, PCI_ANY_ID, PCI_ANY_ID, from);
-	pci_dev_put(pdev);
-	return pdev;
+	return pci_get_subsys(vendor, device, PCI_ANY_ID, PCI_ANY_ID, from);
 }
 
 #endif
-- 
1.6.5.3.298.g39add