From: Evan Quan <evan.quan@amd.com>
Date: Thu, 17 Jan 2019 09:48:30 +0000 (+0800)
Subject: drm/amd/powerplay: avoid unnecessary dpm level setting
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=a0e4fa2f2889c2d02448a9c20d3f24f2fd13e01c;p=openwrt%2Fstaging%2Fblogic.git

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 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) {