[PATCH] 2.6.1: Update PCI Name database, fix gen-devlist.c for long device names.

[PATCH] 2.6.1: Update PCI Name database, fix gen-devlist.c for long device names.

[Kieran Morrissey]

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Hi all and sundry..

Although /proc/pci and by extension the name database is allegedly legacy 
and therefore deprecated, some (including myself) still use it for things 
such as phpSysInfo, and the still-widespread usage of it is obvious in the 
regularity of slight patches to pci.ids. So, this is an all-inclusive patch 
to bring things up to date:

* Updates pci.ids with a snapshot from http://pciids.sourceforge.net/ as at 
14 Jan 04.
* Fixes gen-devlist.c to truncate long device names rather than reject the 
whole database
   (previously the latest databases had some devices that were too long and 
caused a kernel with the latest db to fail to compile)

I've included the (minor) changes to gen-devlist.c in this email if anyone 
cares to discuss them, but since the pci database changes aren't really 
that worthy of discussion on the list and the patch is 83kb, THE COMPLETE 
PATCH has been posted on the web:

http://digital.mgpenguin.net/linux/patch-2.6.1.pci-db/patch.2.6.1.pci-db.diff

or http://digital.mgpenguin.net/linux/ for bzipped versions if you're that 
way inclined..

Cheers,

	Kieran Morrissey


diff -urN -X dontdiff a/drivers/pci/gen-devlist.c b/drivers/pci/gen-devlist.c
--- a/drivers/pci/gen-devlist.c	2003-12-18 13:58:49.000000000 +1100
+++ b/drivers/pci/gen-devlist.c	2004-01-15 13:30:54.929783941 +1100
@@ -10,9 +10,10 @@
  #define MAX_NAME_SIZE 79

  static void
-pq(FILE *f, const char *c)
+pq(FILE *f, const char *c, int len)
  {
-	while (*c) {
+	int i = 1;
+	while (*c && i != len) {
  		if (*c == '"')
  			fprintf(f, "\\\"");
  		else {
@@ -23,6 +24,7 @@
  			}
  		}
  		c++;
+		i++;
  	}
  }

@@ -72,13 +74,13 @@
  						if (bra && bra > c && bra[-1] == ' ')
  							bra[-1] = 0;
  						if (vendor_len + strlen(c) + 1 > MAX_NAME_SIZE) {
-							fprintf(stderr, "Line %d: Device name too long\n", lino);
+							fprintf(stderr, "Line %d: Device name too long. Name truncated.\n", 
lino);
  							fprintf(stderr, "%s\n", c);
-							return 1;
+							/*return 1;*/
  						}
  					}
  					fprintf(devf, "\tDEVICE(%s,%s,\"", vend, line+1);
-					pq(devf, c);
+					pq(devf, c, MAX_NAME_SIZE - vendor_len - 1);
  					fputs("\")\n", devf);
  				} else goto err;
  				break;
@@ -107,7 +109,7 @@
  				return 1;
  			}
  			fprintf(devf, "VENDOR(%s,\"", vend);
-			pq(devf, c);
+			pq(devf, c, 0);
  			fputs("\")\n", devf);
  			mode = 1;
  		} else {

Re: [PATCH] 2.6.1: Update PCI Name database, fix gen-devlist.c for long device names.

[Jeff Garzik]

Kieran Morrissey wrote:
> Hi all and sundry..
> 
> Although /proc/pci and by extension the name database is allegedly 
> legacy and therefore deprecated, some (including myself) still use it 
> for things such as phpSysInfo, and the still-widespread usage of it is 
> obvious in the regularity of slight patches to pci.ids. So, this is an 
> all-inclusive patch to bring things up to date:
> 
> * Updates pci.ids with a snapshot from http://pciids.sourceforge.net/ as 
> at 14 Jan 04.
> * Fixes gen-devlist.c to truncate long device names rather than reject 
> the whole database
>   (previously the latest databases had some devices that were too long 
> and caused a kernel with the latest db to fail to compile)


Well, appreciated, but we really do need to remove it.  We don't need 
these strings in the kernel at all.  pci.ids is just a static lookup 
table that is best kept in userspace.

	Jeff

Re: [PATCH] 2.6.1: Update PCI Name database, fix gen-devlist.c for long device names.

[Ingo Oeser]

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Hash: SHA1

On Thursday 15 January 2004 05:05, Jeff Garzik wrote:
> We don't need these strings in the kernel at all.  pci.ids is just a
> static lookup table that is best kept in userspace.

Where it is always out of date, according to my experience. People tend
to update their kernel more often than lspci, so on most machines I've
been on, I usally point lspci to the kernel copy of it.

sth. needs to be done in this area in the main distros (e.g. more
frequent updates of just this file as a package would be fine).


Regards

Ingo Oeser

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Re: [PATCH] 2.6.1: Update PCI Name database, fix gen-devlist.c for long device names.

[Greg KH]

On Wed, Jan 14, 2004 at 11:05:28PM -0500, Jeff Garzik wrote:
> Kieran Morrissey wrote:
> >Hi all and sundry..
> >
> >Although /proc/pci and by extension the name database is allegedly 
> >legacy and therefore deprecated, some (including myself) still use it 
> >for things such as phpSysInfo, and the still-widespread usage of it is 
> >obvious in the regularity of slight patches to pci.ids. So, this is an 
> >all-inclusive patch to bring things up to date:
> >
> >* Updates pci.ids with a snapshot from http://pciids.sourceforge.net/ as 
> >at 14 Jan 04.
> >* Fixes gen-devlist.c to truncate long device names rather than reject 
> >the whole database
> >  (previously the latest databases had some devices that were too long 
> >and caused a kernel with the latest db to fail to compile)
> 
> 
> Well, appreciated, but we really do need to remove it.  We don't need 
> these strings in the kernel at all.  pci.ids is just a static lookup 
> table that is best kept in userspace.

It will be removed in 2.7.

thanks,

greg k-h

Re: [PATCH] 2.6.1: Update PCI Name database, fix gen-devlist.c for long device names.

[Greg KH]

On Thu, Jan 15, 2004 at 02:28:39PM +1100, Kieran Morrissey wrote:
> Hi all and sundry..
> 
> Although /proc/pci and by extension the name database is allegedly legacy 
> and therefore deprecated, some (including myself) still use it for things 
> such as phpSysInfo, and the still-widespread usage of it is obvious in the 
> regularity of slight patches to pci.ids. So, this is an all-inclusive patch 
> to bring things up to date:
> 
> * Updates pci.ids with a snapshot from http://pciids.sourceforge.net/ as at 
> 14 Jan 04.
> * Fixes gen-devlist.c to truncate long device names rather than reject the 
> whole database
>   (previously the latest databases had some devices that were too long and 
> caused a kernel with the latest db to fail to compile)

Your patch is line-wrapped and can't be applied.

Please try it again.

> I've included the (minor) changes to gen-devlist.c in this email if anyone 
> cares to discuss them, but since the pci database changes aren't really 
> that worthy of discussion on the list and the patch is 83kb, THE COMPLETE 
> PATCH has been posted on the web:
> 
> http://digital.mgpenguin.net/linux/patch-2.6.1.pci-db/patch.2.6.1.pci-db.diff

Feel free to just send this patch to me, as it's much easier for me to
apply this if I get an email with it in it (include the description
please too.)

thanks,

greg k-h

Re: [PATCH] 2.6.1: Update PCI Name database, fix gen-devlist.c for long device names.

[Dave Jones]

On Thu, Jan 15, 2004 at 05:23:14PM -0800, Greg KH wrote:

 > > Well, appreciated, but we really do need to remove it.  We don't need 
 > > these strings in the kernel at all.  pci.ids is just a static lookup 
 > > table that is best kept in userspace.
 > 
 > It will be removed in 2.7.

So I'm the only one with deja vu ?

My recollection of history went something like..

2.2 - Marked as OBSOLETE when /proc/bus/pci came to town.
      iirc, even Martin Mares (PCI maintainer at the time) wanted
	  it removed in 2.3.x
2.3 - Linus decides he likes it, and wants to keep it.
2.4 - Unmarked OBSOLETE
2.5 - Silence, (though we now get PCI stuff in /sys too, woo!)
2.6 - "It will be removed in 2.7"

Anyone else spot a pattern ?  8-)

		Dave

Re: [PATCH] 2.6.1: Update PCI Name database, fix gen-devlist.c for long device names.

[Martin Mares]

Hello!

> * Updates pci.ids with a snapshot from http://pciids.sourceforge.net/ as at 
> 14 Jan 04.
> * Fixes gen-devlist.c to truncate long device names rather than reject the 
> whole database
>   (previously the latest databases had some devices that were too long and 
> caused a kernel with the latest db to fail to compile)

I think it would be better to increase the name length limit, the long entries
really have useful information at the end :)

				Have a nice fortnight
-- 
Martin `MJ' Mares   <mj@ucw.cz>   http://atrey.karlin.mff.cuni.cz/~mj/
Faculty of Math and Physics, Charles University, Prague, Czech Rep., Earth

Re: [PATCH] 2.6.1: Update PCI Name database, fix gen-devlist.c for long device names.

[Greg KH]

On Fri, Jan 16, 2004 at 04:25:00AM +0000, Dave Jones wrote:
> On Thu, Jan 15, 2004 at 05:23:14PM -0800, Greg KH wrote:
> 
>  > > Well, appreciated, but we really do need to remove it.  We don't need 
>  > > these strings in the kernel at all.  pci.ids is just a static lookup 
>  > > table that is best kept in userspace.
>  > 
>  > It will be removed in 2.7.
> 
> So I'm the only one with deja vu ?
> 
> My recollection of history went something like..
> 
> 2.2 - Marked as OBSOLETE when /proc/bus/pci came to town.
>       iirc, even Martin Mares (PCI maintainer at the time) wanted
> 	  it removed in 2.3.x
> 2.3 - Linus decides he likes it, and wants to keep it.
> 2.4 - Unmarked OBSOLETE
> 2.5 - Silence, (though we now get PCI stuff in /sys too, woo!)

No, we tried in 2.5 too.  Linus said it wanted to keep it as a CONFIG
option for now, so we can drop it in 2.7.

> 2.6 - "It will be removed in 2.7"
> 
> Anyone else spot a pattern ?  8-)

Heh, well, we can try again :)

thanks,

greg k-h

Re: [PATCH] 2.6.1: Update PCI Name database, fix gen-devlist.c for long device names.

[Greg KH]

On Sat, Jan 17, 2004 at 11:39:00AM +0100, Martin Mares wrote:
> Hello!
> 
> > * Updates pci.ids with a snapshot from http://pciids.sourceforge.net/ as at 
> > 14 Jan 04.
> > * Fixes gen-devlist.c to truncate long device names rather than reject the 
> > whole database
> >   (previously the latest databases had some devices that were too long and 
> > caused a kernel with the latest db to fail to compile)
> 
> I think it would be better to increase the name length limit, the long entries
> really have useful information at the end :)

That's probably a good idea.  Kieran, care to make up a patch to do
this?

thanks,

greg k-h

Re: [PATCH] 2.6.1: Update PCI Name database, fix gen-devlist.c for long device names.

[Kieran Morrissey]

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At 05:30 PM 19/01/2004 -0800, you wrote:

>On Sat, Jan 17, 2004 at 11:39:00AM +0100, Martin Mares wrote:
>> Hello!
>> 
>> > * Updates pci.ids with a snapshot from http://pciids.sourceforge.net/ as at 
>> > 14 Jan 04.
>> > * Fixes gen-devlist.c to truncate long device names rather than reject the 
>> > whole database
>> >   (previously the latest databases had some devices that were too long and 
>> > caused a kernel with the latest db to fail to compile)
>> 
>> I think it would be better to increase the name length limit, the long entries
>> really have useful information at the end :)
>
>That's probably a good idea.  Kieran, care to make up a patch to do
>this?
>
>thanks,
>
>greg k-h

Done (see other message).. but does anyone know why the name size limit was introduced in 2.5? Saving memory? (all of 30-odd bytes per device, say 480 bytes in an average system? seems silly to reduce functionality that much to achieve such a tiny space saving; I mean it's understandable perhaps on an embedded system, but you wouldn't be compiling the database in then :)

Cheers

        Kieran