[PATCH] video/aty/mach64_ct.c: fix bogus delay loop

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CT based mach64 cards were reported to hang on sparc64 boxes when
compiled with gcc-4.1.x and later.

Looking at this piece of code, it's no surprise.  A critical
delay was implemented as an empty for() loop, and gcc 4.0.x
and previous did not optimize it away, so we did get a delay.

But gcc-4.1.x and later can optimize it away, and we get crashes.

Use a real udelay() to fix this.  Fix verified on SunBlade100.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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David Miller 2007-03-05 01:35:36 -08:00 • committed by Linus Torvalds

parent 8f48561223

commit 8690ba446d

1 changed files with 1 additions and 2 deletions

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drivers/video/aty/mach64_ct.c

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