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drm/radeon: skip async dma init on r6xx

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The hw is buggy and it's not currently used, but it's
currently still initialized by the driver.  Skip the init.
Skipping init also seems to improve stability with dpm on
some r6xx asics.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=66963

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Alex Deucher
2014-01-27 10:59:51 -05:00
parent 9babd35ad7
commit b9ace36f13
2 changed files with 6 additions and 23 deletions
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2
drivers/gpu/drm/radeon/radeon_cs.c
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@@ -138,7 +138,7 @@ static int radeon_cs_get_ring(struct radeon_cs_parser *p, u32 ring, s32 priority
p->ring = R600_RING_TYPE_DMA_INDEX;
else
p->ring = CAYMAN_RING_TYPE_DMA1_INDEX;
} else if (p->rdev->family >= CHIP_R600) {
} else if (p->rdev->family >= CHIP_RV770) {
p->ring = R600_RING_TYPE_DMA_INDEX;
} else {
return -EINVAL;