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Yinghai Lu 837c4ef13c PCI: clear bridge resource range if BIOS assigned bad one 
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>
 		2010-06-11 13:24:51 -07:00
..
Makefile microblaze: Add support for Xilinx PCI host bridge 2010-03-11 14:05:18 +01:00
indirect_pci.c microblaze: Enable PCI, missing files 2010-03-11 14:04:27 +01:00
iomap.c microblaze: Enable PCI, missing files 2010-03-11 14:04:27 +01:00
pci-common.c PCI: clear bridge resource range if BIOS assigned bad one 2010-06-11 13:24:51 -07:00
pci_32.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
xilinx_pci.c microblaze: Add support for Xilinx PCI host bridge 2010-03-11 14:05:18 +01:00