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drm/radeon/kms: use udelay for short delays 

For usec delays use udelay instead of scheduling, this should
allow reclocking to happen faster. This also was the cause
of reported 33s delays at bootup on certain systems.

fixes: freedesktop.org bug 25506

Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2010-01-31 07:07:14 +10:00
parent e803e8b262
commit 01d4503968
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/radeon/atom.c
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@ -643,7 +643,7 @@ static void atom_op_delay(atom_exec_context *ctx, int *ptr, int arg)
uint8_t count = U8((*ptr)++);
SDEBUG(" count: %d\n", count);
if (arg == ATOM_UNIT_MICROSEC)
schedule_timeout_uninterruptible(usecs_to_jiffies(count));
udelay(count);
else
schedule_timeout_uninterruptible(msecs_to_jiffies(count));
}