[PATCH 1/2] drm/amd/powerplay: avoid unnecessary dpm level setting

[Evan Quan]

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

Change-Id: I3ffa0b111a7b37f78a6a4dc1a36d49f0496dd6f9
Signed-off-by: Evan Quan <evan.quan at amd.com>
---
 drivers/gpu/drm/amd/powerplay/hwmgr/pp_psm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/pp_psm.c b/drivers/gpu/drm/amd/powerplay/hwmgr/pp_psm.c
index 56437866d120..68f3dcaa8070 100644
--- 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) {
-- 
2.20.1