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| author |   Yintian Tao <yttao@amd.com> | 2020-02-28 14:24:42 +0800 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2020-03-05 00:50:07 -0500 |
| commit | 2ab7e274b86739f4ceed5d94b6879f2d07b2802f (patch) | |
| tree | 3f2a23f6f9c8c60c7b0f24318c01eca3a50c9923 /net/dcb | |
| parent | Merge tag 'mediatek-drm-fixes-5.6' of https://github.com/ckhu-mediatek/linux.git-tags into drm-fixes (diff) | |
| download | linux-dev-2ab7e274b86739f4ceed5d94b6879f2d07b2802f.tar.xz linux-dev-2ab7e274b86739f4ceed5d94b6879f2d07b2802f.zip | |
drm/amdgpu: clean wptr on wb when gpu recovery
The TDR will be randomly failed due to compute ring
test failure. If the compute ring wptr & 0x7ff(ring_buf_mask)
is 0x100 then after map mqd the compute ring rptr will be
synced with 0x100. And the ring test packet size is also 0x100.
Then after invocation of amdgpu_ring_commit, the cp will not
really handle the packet on the ring buffer because rptr is equal to wptr.
Signed-off-by: Yintian Tao <yttao@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Monk Liu <Monk.Liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'net/dcb')
0 files changed, 0 insertions, 0 deletions