No functional change until wptr polling uses this
location (future patch).
Cc: Frank Min <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
---
drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
index 7cb5320..9392799 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
@@ -301,8 +301,8 @@ static void sdma_v4_0_ring_set_wptr(struct amdgpu_ring
*ring)
lower_32_bits(ring->wptr << 2),
upper_32_bits(ring->wptr << 2));
/* XXX check if swapping is necessary on BE */
- adev->wb.wb[ring->wptr_offs] = lower_32_bits(ring->wptr << 2);
- adev->wb.wb[ring->wptr_offs + 1] = upper_32_bits(ring->wptr <<
2);
+ atomic64_set((atomic64_t *)&adev->wb.wb[ring->wptr_offs],
+ (ring->wptr << 2));
DRM_DEBUG("calling WDOORBELL64(0x%08x, 0x%016llx)\n",
ring->doorbell_index, ring->wptr << 2);
--
2.5.5
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