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| author | Wyatt Wood <[email protected]> | 2021-09-21 13:17:27 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2021-10-04 19:23:02 +0000 |
| commit | 64df665ffed8dc54a25ac1eedd4955eb56b08081 (patch) | |
| tree | c05a4a7de9f182b2ef04e3cf96d272c51b6d402b /drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | |
| parent | drm/amdgpu/display: fold DRM_AMD_DC_DCN201 into DRM_AMD_DC_DCN (diff) | |
| download | kernel-64df665ffed8dc54a25ac1eedd4955eb56b08081.tar.gz kernel-64df665ffed8dc54a25ac1eedd4955eb56b08081.zip | |
drm/amd/display: Prevent using DMUB rptr that is out-of-bounds
[Why]
Running into bugchecks during stress test where rptr is 0xFFFFFFFF.
Typically this is caused by a hard hang, and can come from HW outside
of DCN.
[How]
To prevent bugchecks when writing the DMUB rptr, fist check that the
rptr is valid.
Reviewed-by: Nicholas Kazlauskas <[email protected]>
Acked-by: Solomon Chiu <[email protected]>
Signed-off-by: Wyatt Wood <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c')
0 files changed, 0 insertions, 0 deletions