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authorLinus Torvalds <torvalds@linux-foundation.org>2009-10-11 15:57:57 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-10-11 15:57:57 -0700
commitd93a8f829fe1d2f3002f2c6ddb553d12db420412 (patch)
treec6a2c4c287af50bc37292a7cbceaacea07b67b1c /tools
parent161291396e76e0832c08f617eb9bd364d1648148 (diff)
Revert "USB: Work around BIOS bugs by quiescing USB controllers earlier"
This reverts commit db8be50c4307dac2b37305fc59c8dc0f978d09ea, as per http://bugzilla.kernel.org/show_bug.cgi?id=14374 http://marc.info/?l=linux-kernel&m=125446885705223&w=4 We simply can't do the USB handoff at FIXUP_HEADER time, since it will often require us to have valid IO mappings etc. But that in turn requires a whole different approach, not this trivial one-liner. Maybe we could teach all the USB quirk handoff handlers to only do the quirk if the device has all its registers set up (since if it isn't initialized, it's unlikely to be active), but regardless that will need a whole lot more code than just saying "let's do it really early". The proper fix is almost certainly to just leave the legacy IOMMU mappings active until after all devices have been initialized. Reported-by: Nick Piggin <npiggin@suse.de> Cc: David Woodhouse <David.Woodhouse@intel.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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