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

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Cp wptr in wb buffer is outdated after VF FLR.
The outdated wptr may cause cp to execute unexpected packets.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>

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HaiJun Chang 2019-10-29 15:44:08 +08:00 • committed by Alex Deucher

parent bff77e86a3

commit 897110eed5

1 changed files with 1 additions and 0 deletions

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

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