On 29/01/2026 04:34, Alex Deucher wrote:
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.
Signed-off-by: Alex Deucher <[email protected]>
---
drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
index e9254ec3b6417..ef7d91a4437ec 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -6883,7 +6883,7 @@ static int gfx_v10_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);
For my education could I ask if this just about writing the 64-bit value
or the atomic part is also important?
Regards,
Tvrtko
amdgpu_ring_clear_ring(ring);
}
