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(parent: 38715c0) | patch
cardbus: limit IO windows to 256 bytes
authorLinus Torvalds <torvalds@g5.osdl.org>
Sun, 23 Oct 2005 23:31:16 +0000 (16:31 -0700)
committerLinus Torvalds <torvalds@g5.osdl.org>
Sun, 23 Oct 2005 23:31:16 +0000 (16:31 -0700)
commit6eac6d3a5329954ca1c45ca5d1801a4b2e2fb617
treeac636ec99466e67eaa1b52555517a48a1c4fcb35tree | snapshot
parent38715c0f3bec2f5509f90e1747054ce155ecc5a6commit | diff
cardbus: limit IO windows to 256 bytes

That's what we've always historically done, and bigger windows seem to
confuse some cardbus bridges. Or something.

Alan reports that this makes the ThinkPad 600x series work properly
again: the 4kB IO window for some reason made IDE DMA not work, which
makes IDE painfully slow even if it works after DMA timeouts.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
drivers/pci/setup-bus.c diff | blob | history
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