[PATCH 05/22] drm/amd/pm: check specific index for aldebaran

[Jesse Zhang <jesse.zhang@xxxxxxx>]

Check for specific indexes that may be invalid values.

Signed-off-by: Jesse Zhang <Jesse.Zhang@xxxxxxx>
---
 drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
index ce941fbb9cfb..a22eb6bbb05e 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
@@ -1886,7 +1886,8 @@ static int aldebaran_mode2_reset(struct smu_context *smu)
 
 	index = smu_cmn_to_asic_specific_index(smu, CMN2ASIC_MAPPING_MSG,
 						SMU_MSG_GfxDeviceDriverReset);
-
+	if (index < 0 )
+		return -EINVAL;
 	mutex_lock(&smu->message_lock);
 	if (smu->smc_fw_version >= 0x00441400) {
 		ret = smu_cmn_send_msg_without_waiting(smu, (uint16_t)index, SMU_RESET_MODE_2);
-- 
2.25.1