drm/amd/pm: check specific index for smu13

[ Upstream commit a3ac9d1 ] Check for specific indexes that may be invalid values. Signed-off-by: Jesse Zhang <[email protected]> Suggested-by: Tim Huang <[email protected]> Reviewed-by: Tim Huang <[email protected]> Reviewed-by: Yang Wang <[email protected]> Signed-off-by: Alex Deucher <[email protected]> Signed-off-by: Sasha Levin <[email protected]>
xanmod · Sep 8, 2024 · 0312bf1 · 0312bf1
1 parent f8e484c
commit 0312bf1
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c
@@ -2333,6 +2333,8 @@ static int smu_v13_0_6_mode2_reset(struct smu_context *smu)
 
 	index = smu_cmn_to_asic_specific_index(smu, CMN2ASIC_MAPPING_MSG,
 					       SMU_MSG_GfxDeviceDriverReset);
+	if (index < 0)
+		return index;
 
 	mutex_lock(&smu->message_lock);