drm/amd/powerplay: avoid unnecessary dpm level setting

No dpm level setting is needed when the request level
is actually same as current.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/pp_psm.c b/drivers/gpu/drm/amd/powerplay/hwmgr/pp_psm.c
index 56437866d1206c163f36593e2764bfb6bfd96170..68f3dcaa80703792d05236c77968b666b9fb3780 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/pp_psm.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/pp_psm.c
@@ -278,7 +278,8 @@ int psm_adjust_power_state_dynamic(struct pp_hwmgr *hwmgr, bool skip,
 
        phm_notify_smc_display_config_after_ps_adjustment(hwmgr);
 
-       if (!phm_force_dpm_levels(hwmgr, hwmgr->request_dpm_level))
+       if ((hwmgr->request_dpm_level != hwmgr->dpm_level) &&
+           !phm_force_dpm_levels(hwmgr, hwmgr->request_dpm_level))
                hwmgr->dpm_level = hwmgr->request_dpm_level;
 
        if (hwmgr->dpm_level != AMD_DPM_FORCED_LEVEL_MANUAL) {