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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>
This commit is contained in:
Mario Limonciello 2021-11-01 16:15:33 -05:00 committed by Alex Deucher
parent 9a40d0448f
commit 067558177b
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
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@ -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)