diff options
| author | Mario Limonciello <mario.limonciello@amd.com> | 2021-11-01 16:15:33 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-11-03 12:22:07 -0400 |
| commit | 067558177be63c38935f2668cb270e42d37e6372 (patch) | |
| tree | 7e1ffa7f019ffeb824421a58eac75591f3ddab5d /drivers | |
| parent | 9a40d0448f0381dcff2c8f9e63d27ce79aebbdfb (diff) | |
drm/amd/pm: Add missing mutex for pp_get_power_profile_mode
Prevent possible issues from set and get being called simultaneously.
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c index 321215003643..978007664e71 100644 --- a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c +++ b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c @@ -875,6 +875,7 @@ pp_dpm_get_vce_clock_state(void *handle, unsigned idx) static int pp_get_power_profile_mode(void *handle, char *buf) { struct pp_hwmgr *hwmgr = handle; + int ret; if (!hwmgr || !hwmgr->pm_en || !buf) return -EINVAL; @@ -884,7 +885,10 @@ static int pp_get_power_profile_mode(void *handle, char *buf) return snprintf(buf, PAGE_SIZE, "\n"); } - return hwmgr->hwmgr_func->get_power_profile_mode(hwmgr, buf); + mutex_lock(&hwmgr->smu_lock); + ret = hwmgr->hwmgr_func->get_power_profile_mode(hwmgr, buf); + mutex_unlock(&hwmgr->smu_lock); + return ret; } static int pp_set_power_profile_mode(void *handle, long *input, uint32_t size) |