https://github.com/torvalds/linux
Revision 837c4ef13c44296bb763a0ca0e84a076592474cf authored by Yinghai Lu on 03 June 2010, 20:43:03 UTC, committed by Jesse Barnes on 11 June 2010, 20:24:51 UTC
Yannick found that video does not work with 2.6.34.  The cause of this
bug was that the BIOS had assigned the wrong range to the PCI bridge
above the video device.  Before 2.6.34 the kernel would have shrunk
the size of the bridge window, but since
  d65245c PCI: don't shrink bridge resources
the kernel will avoid shrinking BIOS ranges.

So zero out the old range if we fail to claim it at boot time; this will
cause us to allocate a new range at startup, restoring the 2.6.34
behavior.

Fixes regression https://bugzilla.kernel.org/show_bug.cgi?id=16009.

Reported-by: Yannick <yannick.roehlly@free.fr>
Acked-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
1 parent a7ef7d1
History
Tip revision: 837c4ef13c44296bb763a0ca0e84a076592474cf authored by Yinghai Lu on 03 June 2010, 20:43:03 UTC
PCI: clear bridge resource range if BIOS assigned bad one
Tip revision: 837c4ef
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drivers
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include
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lib
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sound
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usr
virt
.gitignore -rw-r--r-- 930 bytes
.mailmap -rw-r--r-- 3.9 KB
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 91.8 KB
Kbuild -rw-r--r-- 2.4 KB
MAINTAINERS -rw-r--r-- 169.8 KB
Makefile -rw-r--r-- 51.9 KB
README -rw-r--r-- 17.0 KB
REPORTING-BUGS -rw-r--r-- 3.3 KB

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