public-mirrors/linux
1
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-08-05 16:54:27 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

drm/amdgpu: protect eeprom update from GPU reset

Browse source 
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>
This commit is contained in:
Dennis Li 2020-10-14 17:11:41 +08:00 • committed by Alex Deucher
parent a3bab32585
commit 40e7ed973a
1 changed files with 8 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
View file

@ -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);