[PATCH] drm/amd/powerplay: avoid access before allocation

Evan Quan evan.quan at amd.com
Fri Jul 12 02:54:39 UTC 2019


No access before allocation.

Change-Id: Ia1d78786f2400cd1cd227d1ab6ea4c6a71619e4c
Signed-off-by: Evan Quan <evan.quan at amd.com>
---
 drivers/gpu/drm/amd/powerplay/vega20_ppt.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/powerplay/vega20_ppt.c b/drivers/gpu/drm/amd/powerplay/vega20_ppt.c
index 9e3e737926aa..c70262e6e250 100644
--- a/drivers/gpu/drm/amd/powerplay/vega20_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/vega20_ppt.c
@@ -441,7 +441,6 @@ static int vega20_store_powerplay_table(struct smu_context *smu)
 {
 	ATOM_Vega20_POWERPLAYTABLE *powerplay_table = NULL;
 	struct smu_table_context *table_context = &smu->smu_table;
-	int ret;
 
 	if (!table_context->power_play_table)
 		return -EINVAL;
@@ -455,9 +454,7 @@ static int vega20_store_powerplay_table(struct smu_context *smu)
 	table_context->thermal_controller_type = powerplay_table->ucThermalControllerType;
 	table_context->TDPODLimit = le32_to_cpu(powerplay_table->OverDrive8Table.ODSettingsMax[ATOM_VEGA20_ODSETTING_POWERPERCENTAGE]);
 
-	ret = vega20_setup_od8_information(smu);
-
-	return ret;
+	return 0;
 }
 
 static int vega20_append_powerplay_table(struct smu_context *smu)
@@ -1507,6 +1504,12 @@ static int vega20_set_default_od8_setttings(struct smu_context *smu)
 
 	smu->od_settings = (void *)od8_settings;
 
+	ret = vega20_setup_od8_information(smu);
+	if (ret) {
+		pr_err("Retrieve board OD limits failed!\n");
+		return ret;
+	}
+
 	if (smu_feature_is_enabled(smu, SMU_FEATURE_DPM_SOCCLK_BIT)) {
 		if (od8_settings->od_feature_capabilities[ATOM_VEGA20_ODFEATURE_GFXCLK_LIMITS] &&
 		    od8_settings->od_settings_max[OD8_SETTING_GFXCLK_FMAX] > 0 &&
-- 
2.21.0



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