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>
diff --git a/drivers/gpu/drm/radeon/cik_sdma.c b/drivers/gpu/drm/radeon/cik_sdma.c
index d629cea..db8ce30 100644
--- a/drivers/gpu/drm/radeon/cik_sdma.c
+++ b/drivers/gpu/drm/radeon/cik_sdma.c
@@ -119,6 +119,7 @@
reg = SDMA0_GFX_RB_WPTR + SDMA1_REGISTER_OFFSET;
WREG32(reg, (ring->wptr << 2) & 0x3fffc);
+ (void)RREG32(reg);
}
/**