atyfb: fix HP OmniBook 500 reboot hang

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Apparently HP OmniBook 500's BIOS doesn't like the way atyfb reprograms
the hardware. The BIOS will simply hang after a reboot. Fix the problem
by restoring the hardware to it's original state on reboot.

Signed-off-by: Ville Syrjala <syrjala@sci.fi>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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This commit is contained in:

Ville Syrjala 2009-06-30 11:41:40 -07:00 • committed by Linus Torvalds

parent 50efacf671

commit eafad22a05

2 changed files with 82 additions and 9 deletions

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2

drivers/video/aty/atyfb.h

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89

drivers/video/aty/atyfb_base.c

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