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authorPaul Mackerras <paulus@samba.org>2008-12-28 14:12:57 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-01-08 16:25:11 +1100
commit16124f10df43e6e08783f1fede6888bf36ac705c (patch)
treee968c899a9dffaf7d10a8c698ae54d3259e56d71 /arch/powerpc/include
parent1d5bc03a8183d12c7daf4e7c69cce8d9c4b9a86b (diff)
powerpc: Fix pciconfig_iobase system call on PCI-Express powermac
X has been failing to start on my quad G5 powermac since commit 1fd0f52583a85b21a394201b007bc1ee104b235d ("powerpc: Fix domain numbers in /proc on 64-bit") went in. The reason is that the change allows X to see the PCI-PCI bridge above the video card (previously it was obscured by the fact that there were two "00" directories in /proc/bus/pci), and the pciconfig_iobase system call on the bridge is failing because of a hack that we have to return information about the AGP bus when X asks about bus 0. This machine doesn't have an AGP bus (it has PCI Express) and so the pciconfig_iobase call is returning -1, which ultimately causes X to fail to start. This fixes it by checking that we have an AGP bridge before redirecting the pciconfig_iobase call to return information about the AGP bus. With this, X starts successfully both on a quad G5 with PCI Express and on an older dual G5 with AGP. Signed-off-by: Paul Mackerras <paulus@samba.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include')
0 files changed, 0 insertions, 0 deletions