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drm/radeon/kms: don't default display priority to high on rs4xx

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Seems to cause issues with the sound hardware.  Fixes kernel
bug 15982:
https://bugzilla.kernel.org/show_bug.cgi?id=15982

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2010-05-20 11:26:11 -04:00 committed by Dave Airlie
parent c43ae476a5
commit 45737447ed
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/radeon/radeon_display.c
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@ -983,8 +983,11 @@ void radeon_update_display_priority(struct radeon_device *rdev)
/* set display priority to high for r3xx, rv515 chips
* this avoids flickering due to underflow to the
* display controllers during heavy acceleration.
* Don't force high on rs4xx igp chips as it seems to
* affect the sound card. See kernel bug 15982.
*/
if (ASIC_IS_R300(rdev) || (rdev->family == CHIP_RV515))
if ((ASIC_IS_R300(rdev) || (rdev->family == CHIP_RV515)) &&
!(rdev->flags & RADEON_IS_IGP))
rdev->disp_priority = 2;
else
rdev->disp_priority = 0;