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| author | Mario Limonciello <[email protected]> | 2023-06-07 06:41:22 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2023-06-09 16:47:50 +0000 |
| commit | 3537d6a48c50ed37e419f89931a5acdb6c56c6d6 (patch) | |
| tree | 398191954055a15a8da882023891d0893865125d /drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c | |
| parent | drm/amd/pm: enable more Pstates profile levels for SMU v13.0.4 (diff) | |
| download | kernel-3537d6a48c50ed37e419f89931a5acdb6c56c6d6.tar.gz kernel-3537d6a48c50ed37e419f89931a5acdb6c56c6d6.zip | |
drm/amd: Make sure image is written to trigger VBIOS image update flow
The VBIOS image update flow requires userspace to:
1) Write the image to `psp_vbflash`
2) Read `psp_vbflash`
3) Poll `psp_vbflash_status` to check for completion
If userspace reads `psp_vbflash` before writing an image, it's
possible that it causes problems that can put the dGPU into an invalid
state.
Explicitly check that an image has been written before letting a read
succeed.
Cc: [email protected]
Fixes: 8424f2ccb3c0 ("drm/amdgpu/psp: Add vbflash sysfs interface support")
Reviewed-by: Alex Deucher <[email protected]>
Signed-off-by: Mario Limonciello <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c')
0 files changed, 0 insertions, 0 deletions