linux-kernel - [PATCH 5.8 122/255] drm/amd/powerplay: correct Vega20 cached smu feature state

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Message-Id: <20200901151006.576070658@linuxfoundation.org>
Date:   Tue,  1 Sep 2020 17:09:38 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Evan Quan <evan.quan@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.8 122/255] drm/amd/powerplay: correct Vega20 cached smu feature state

From: Evan Quan <evan.quan@....com>

[ Upstream commit 266d81d9eed30f4994d76a2b237c63ece062eefe ]

Correct the cached smu feature state on pp_features sysfs
setting.

Signed-off-by: Evan Quan <evan.quan@....com>
Acked-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 .../drm/amd/powerplay/hwmgr/vega20_hwmgr.c    | 38 +++++++++----------
 1 file changed, 19 insertions(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c
index 9ff470f1b826c..b7f3f8b62c2ac 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_hwmgr.c
@@ -979,10 +979,7 @@ static int vega20_disable_all_smu_features(struct pp_hwmgr *hwmgr)
 {
 	struct vega20_hwmgr *data =
 			(struct vega20_hwmgr *)(hwmgr->backend);
-	uint64_t features_enabled;
-	int i;
-	bool enabled;
-	int ret = 0;
+	int i, ret = 0;
 
 	PP_ASSERT_WITH_CODE((ret = smum_send_msg_to_smc(hwmgr,
 			PPSMC_MSG_DisableAllSmuFeatures,
@@ -990,17 +987,8 @@ static int vega20_disable_all_smu_features(struct pp_hwmgr *hwmgr)
 			"[DisableAllSMUFeatures] Failed to disable all smu features!",
 			return ret);
 
-	ret = vega20_get_enabled_smc_features(hwmgr, &features_enabled);
-	PP_ASSERT_WITH_CODE(!ret,
-			"[DisableAllSMUFeatures] Failed to get enabled smc features!",
-			return ret);
-
-	for (i = 0; i < GNLD_FEATURES_MAX; i++) {
-		enabled = (features_enabled & data->smu_features[i].smu_feature_bitmap) ?
-			true : false;
-		data->smu_features[i].enabled = enabled;
-		data->smu_features[i].supported = enabled;
-	}
+	for (i = 0; i < GNLD_FEATURES_MAX; i++)
+		data->smu_features[i].enabled = 0;
 
 	return 0;
 }
@@ -3230,10 +3218,11 @@ static int vega20_get_ppfeature_status(struct pp_hwmgr *hwmgr, char *buf)
 
 static int vega20_set_ppfeature_status(struct pp_hwmgr *hwmgr, uint64_t new_ppfeature_masks)
 {
-	uint64_t features_enabled;
-	uint64_t features_to_enable;
-	uint64_t features_to_disable;
-	int ret = 0;
+	struct vega20_hwmgr *data =
+			(struct vega20_hwmgr *)(hwmgr->backend);
+	uint64_t features_enabled, features_to_enable, features_to_disable;
+	int i, ret = 0;
+	bool enabled;
 
 	if (new_ppfeature_masks >= (1ULL << GNLD_FEATURES_MAX))
 		return -EINVAL;
@@ -3262,6 +3251,17 @@ static int vega20_set_ppfeature_status(struct pp_hwmgr *hwmgr, uint64_t new_ppfe
 			return ret;
 	}
 
+	/* Update the cached feature enablement state */
+	ret = vega20_get_enabled_smc_features(hwmgr, &features_enabled);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < GNLD_FEATURES_MAX; i++) {
+		enabled = (features_enabled & data->smu_features[i].smu_feature_bitmap) ?
+			true : false;
+		data->smu_features[i].enabled = enabled;
+	}
+
 	return 0;
 }
 
-- 
2.25.1