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authorDaniel Ritz <daniel.ritz-ml@swissonline.ch>2006-08-22 07:29:08 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2006-08-26 13:05:31 -0700
commit954c0b7cd5b9aaa11fb67a0c011fcb5e5897385a (patch)
tree09c8eed0e42c3b28d8b0ffc58d86f906f4093658 /lib
parentfaf9b616325430422fa13fead88ca7843eb249d6 (diff)
[PATCH] PCI: use PCBIOS as last fallback
there was a change in 2.6.17 which affected the order in which the PCI access methods are probed. this gives regressions on some machines with broken BIOS. the problem is that PCBIOS sometimes reports last bus wrong, leaving cardbus non-funcational. previously those system worked fine with direct access. The patch changes the PCI init code to have PCBIOS as last fallback, yet the PCBIOS code still has to run first to set pcibios_last_bus to the value reported by the BIOS. this is needed in case legacy PCI probing (arch/i386/pci/legacy.c) is used to detect peer busses. using direct access if available fixes the cardbus problems. Signed-off-by: Daniel Ritz <daniel.ritz@gmx.ch> Cc: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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