diff options
author | Andi Kleen <andi@firstfloor.org> | 2009-01-09 12:17:39 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-09 12:46:22 -0800 |
commit | 8659c406ade32f47da2c95889094801921d6330a (patch) | |
tree | b2b263f1adda20a07415db7683f9807a903dc60e /arch/alpha/include/asm/pgalloc.h | |
parent | 4ce5f24193cef2e26f182ce708e94ba1f5fafc0c (diff) |
x86: only scan the root bus in early PCI quirks
We found a situation on Linus' machine that the Nvidia timer quirk hit on
a Intel chipset system. The problem is that the system has a fancy Nvidia
card with an own PCI bridge, and the early-quirks code looking for any
NVidia bridge triggered on it incorrectly. This didn't lead a boot
failure by luck, but the timer routing code selecting the wrong timer
first and some ugly messages. It might lead to real problems on other
systems.
I checked all the devices which are currently checked for by early_quirks
and it turns out they are all located in the root bus zero.
So change the early-quirks loop to only scan bus 0. This incidently also
saves quite some unnecessary scanning work, because early_quirks doesn't
go through all the non root busses.
The graphics card is not on bus 0, so it is not matched anymore.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/alpha/include/asm/pgalloc.h')
0 files changed, 0 insertions, 0 deletions