This is a note to let you know that I've just added the patch titled
drm/amdgpu/pm: Fix uninitialized variable agc_btc_response
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amdgpu-pm-fix-uninitialized-variable-agc_btc_res.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit e9748e09e043502f2b826c2180ca4b29c8970e3e
Author: Ma Jun <Jun.Ma2@xxxxxxx>
Date: Sun Apr 28 14:41:38 2024 +0800
drm/amdgpu/pm: Fix uninitialized variable agc_btc_response
[ Upstream commit df4409d8a04dd39d7f2aa0c5f528a56b99eaaa13 ]
Assign an default value to agc_btc_response in failed case
Signed-off-by: Ma Jun <Jun.Ma2@xxxxxxx>
Acked-by: Alex Deucher <alexander.deucher@xxxxxxx>
Reviewed-by: Yang Wang <kevinyang.wang@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c
index 91fefaeaf47d..1b1603101d7d 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c
@@ -2361,15 +2361,20 @@ static int vega10_acg_enable(struct pp_hwmgr *hwmgr)
{
struct vega10_hwmgr *data = hwmgr->backend;
uint32_t agc_btc_response;
+ int ret;
if (data->smu_features[GNLD_ACG].supported) {
if (0 == vega10_enable_smc_features(hwmgr, true,
data->smu_features[GNLD_DPM_PREFETCHER].smu_feature_bitmap))
data->smu_features[GNLD_DPM_PREFETCHER].enabled = true;
- smum_send_msg_to_smc(hwmgr, PPSMC_MSG_InitializeAcg, NULL);
+ ret = smum_send_msg_to_smc(hwmgr, PPSMC_MSG_InitializeAcg, NULL);
+ if (ret)
+ return ret;
- smum_send_msg_to_smc(hwmgr, PPSMC_MSG_RunAcgBtc, &agc_btc_response);
+ ret = smum_send_msg_to_smc(hwmgr, PPSMC_MSG_RunAcgBtc, &agc_btc_response);
+ if (ret)
+ agc_btc_response = 0;
if (1 == agc_btc_response) {
if (1 == data->acg_loop_state)
