Commit 897110ee authored Oct 29, 2019 by HaiJun Chang Committed by Alex Deucher Oct 30, 2019

drm/amdgpu: fix gfx VF FLR test fail on navi



Cp wptr in wb buffer is outdated after VF FLR.
The outdated wptr may cause cp to execute unexpected packets.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@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent bff77e86

drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -3106,6 +3106,7 @@ 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);

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