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authorIvan Kokshaysky <ink@jurassic.park.msu.ru>2005-07-07 03:07:56 +0400
committerLinus Torvalds <torvalds@g5.osdl.org>2005-07-06 16:12:58 -0700
commit960b8466548c9bc6f718b5f470c1a58000fab09d (patch)
tree9dfe507f4b1d5dcde83249754a66d76a9851294f /arch
parent107177410b754b597028e430725bc3b316936b6b (diff)
[PATCH] yet another fix for setup-bus.c/x86 merge
There is a slight disagreement between setup-bus.c code and traditional x86 PCI setup wrt which recourses are invalid vs resources that are free for further allocations. In particular, in the setup-bus.c, if we failed to allocate some resource, we nullify "start" and "flags" fields, but *not* the "end" one. But x86 pcibios_enable_resources() does the following check: if (!r->start && r->end) { printk(KERN_ERR "PCI: Device %s not available because of resource collisions\n", pci_name(dev)); return -EINVAL; which means that the device owning the offending resource cannot be enabled. In particular, this breaks cardbus behind the normal decode p2p bridge - the cardbus code from setup-bus.c requests rather large IO and MEM windows, and if it fails, the socket is completely unavailable. Which is wrong, as the yenta code is capable to allocate smaller windows. Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions