Commit 45737447 authored by Alex Deucher's avatar Alex Deucher Committed by Dave Airlie
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drm/radeon/kms: don't default display priority to high on rs4xx

Seems to cause issues with the sound hardware.  Fixes kernel
bug 15982:

Signed-off-by: default avatarAlex Deucher <>
Signed-off-by: default avatarDave Airlie <>
parent c43ae476
......@@ -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;
rdev->disp_priority = 0;
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