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drm/radeon/cik: Read back SDMA WPTR register after writing it 

For symmetry with other *_set_wptr hooks.

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Michel Dänzer 2014-07-29 18:47:22 +09:00 committed by Alex Deucher
parent 810b73d190
commit f069dc1dbc
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/radeon/cik_sdma.c
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@ -119,6 +119,7 @@ void cik_sdma_set_wptr(struct radeon_device *rdev,
reg = SDMA0_GFX_RB_WPTR + SDMA1_REGISTER_OFFSET; reg = SDMA0_GFX_RB_WPTR + SDMA1_REGISTER_OFFSET;
WREG32(reg, (ring->wptr << 2) & 0x3fffc); WREG32(reg, (ring->wptr << 2) & 0x3fffc);
(void)RREG32(reg);
} }
/** /**