[PATCH 3/3] drm/radeon/cik: Read back SDMA WPTR register after writing it

[Michel Dänzer]

From: Michel Dänzer <michel.daenzer at amd.com>

For symmetry with other *_set_wptr hooks.

Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
---
 drivers/gpu/drm/radeon/cik_sdma.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/radeon/cik_sdma.c b/drivers/gpu/drm/radeon/cik_sdma.c
index 73bd2b2..ec7c7b6 100644
--- a/drivers/gpu/drm/radeon/cik_sdma.c
+++ b/drivers/gpu/drm/radeon/cik_sdma.c
@@ -121,6 +121,7 @@ void cik_sdma_set_wptr(struct radeon_device *rdev,
 		reg = SDMA0_GFX_RB_WPTR + SDMA1_REGISTER_OFFSET;
 
 	WREG32(reg, (ring->wptr << 2) & 0x3fffc);
+	(void)RREG32(reg);
 }
 
 /**
-- 
2.0.1