Cp wptr in wb buffer is outdated after VF FLR. The outdated wptr may cause cp to execute unexpected packets. Reset cp wptr in wb buffer. Signed-off-by: HaiJun Chang <HaiJun.Chang@xxxxxxx> --- drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c index d126d66..13363f2 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c @@ -3107,6 +3107,7 @@ static int gfx_v10_0_gfx_init_queue(struct amdgpu_ring *ring) memcpy(mqd, adev->gfx.me.mqd_backup[AMDGPU_MAX_GFX_RINGS], sizeof(*mqd)); /* reset the ring */ ring->wptr = 0; + adev->wb.wb[ring->wptr_offs] = 0; amdgpu_ring_clear_ring(ring); #ifdef BRING_UP_DEBUG mutex_lock(&adev->srbm_mutex); -- 2.7.4 _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx
