drm/amd/pm: check specific index for aldebaran

Check for specific indexes that may be invalid values.

Signed-off-by: Jesse Zhang <Jesse.Zhang@amd.com>
Reviewed-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Tim Huang <Tim.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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 ce941fb..a22eb6b 100644 (file)
--- 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);