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| author | David (Ming Qiang) Wu <David.Wu3@amd.com> | 2025-05-12 22:14:43 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-05-14 18:28:39 +0300 |
| commit | 07c9db090b86e5211188e1b351303fbc673378cf (patch) | |
| tree | 601f04db20dd9cd0bc2a833b301d94aaf5a186b1 /drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c | |
| parent | f6a305d4748801a6c799ae9375b2ecff3aed094b (diff) | |
| download | linux-07c9db090b86e5211188e1b351303fbc673378cf.tar.xz | |
drm/amdgpu: read back register after written for VCN v4.0.5
On VCN v4.0.5 there is a race condition where the WPTR is not
updated after starting from idle when doorbell is used. Adding
register read-back after written at function end is to ensure
all register writes are done before they can be used.
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/12528
Signed-off-by: David (Ming Qiang) Wu <David.Wu3@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Tested-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Ruijing Dong <ruijing.dong@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c')
0 files changed, 0 insertions, 0 deletions