diff options
| author | Dennis Li <Dennis.Li@amd.com> | 2020-10-14 17:11:41 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-10-21 16:13:43 -0400 |
| commit | 40e7ed973ad99edad24993540ddb26dd45b9441e (patch) | |
| tree | 48f3bf40d79d3c09ce5dc34acad1279a2cabc300 /drivers | |
| parent | a3bab3258568fa3157b0d657328ea3c6a2d924d7 (diff) | |
| download | linux-40e7ed973ad99edad24993540ddb26dd45b9441e.tar.bz2 | |
drm/amdgpu: protect eeprom update from GPU reset
because i2c is unstable in GPU reset, driver need protect
eeprom update from GPU reset, to not miss any bad page record.
Signed-off-by: Dennis Li <Dennis.Li@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c index 0e64c39a2372..695bcfc5c983 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c @@ -149,7 +149,11 @@ static int __update_table_header(struct amdgpu_ras_eeprom_control *control, msg.addr = control->i2c_address; + /* i2c may be unstable in gpu reset */ + down_read(&adev->reset_sem); ret = i2c_transfer(&adev->pm.smu_i2c, &msg, 1); + up_read(&adev->reset_sem); + if (ret < 1) DRM_ERROR("Failed to write EEPROM table header, ret:%d", ret); @@ -557,7 +561,11 @@ int amdgpu_ras_eeprom_process_recods(struct amdgpu_ras_eeprom_control *control, control->next_addr += EEPROM_TABLE_RECORD_SIZE; } + /* i2c may be unstable in gpu reset */ + down_read(&adev->reset_sem); ret = i2c_transfer(&adev->pm.smu_i2c, msgs, num); + up_read(&adev->reset_sem); + if (ret < 1) { DRM_ERROR("Failed to process EEPROM table records, ret:%d", ret); |