From: Jesse Zhang <jesse.zhang@amd.com>
Date: Wed, 8 May 2024 09:13:28 +0000 (+0800)
Subject: drm/amd/pm: check specific index for aldebaran
X-Git-Tag: v6.11-rc1~141^2~25^2~236
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0ce8ef2639c112ae203c985b758389e378630aac;p=thirdparty%2Fkernel%2Flinux.git

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 ce941fbb9cfbe..a22eb6bbb05ed 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);