drm/amdgpu/gfx12: fix wptr reset in KGQ init

wptr is a 64 bit value and we need to update the
full value, not just 32 bits. Align with what we
already do for KCQs.

Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Jesse Zhang <jesse.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit a2918f958d3f677ea93c0ac257cb6ba69b7abb7c)
Cc: stable@vger.kernel.org

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
index b786967022d29d2ac9ce2cb7ee54938ddb125cb8..fbc100778f970fa37ed9ff831b3298465746854a 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
@@ -3079,7 +3079,7 @@ static int gfx_v12_0_kgq_init_queue(struct amdgpu_ring *ring, bool reset)
                        memcpy_toio(mqd, adev->gfx.me.mqd_backup[mqd_idx], sizeof(*mqd));
                /* reset the ring */
                ring->wptr = 0;
-               *ring->wptr_cpu_addr = 0;
+               atomic64_set((atomic64_t *)ring->wptr_cpu_addr, 0);
                amdgpu_ring_clear_ring(ring);
        }