diff options
| author | Mario Limonciello <[email protected]> | 2023-06-07 01:41:22 -0500 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2023-06-13 17:04:45 -0400 |
| commit | 3eb1a3a04056ba3df3205e169b8acc9da0c65a94 (patch) | |
| tree | 637c908b35b1ce94cbb44905d36474df480da450 /drivers/fpga/fpga-mgr.c | |
| parent | e61f67749b351c19455ce3085af2ae9af80023bc (diff) | |
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/fpga/fpga-mgr.c')
0 files changed, 0 insertions, 0 deletions