[PATCH 2/2] drm/amdgpu/pm: Fix uninitialized variable warning

[Ma Jun <Jun.Ma2@amd.com>]

Check return value of smum_send_msg_to_smc to fix
uninitialized variable varning

Signed-off-by: Ma Jun <Jun.Ma2@amd.com>
---
 .../drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.c  | 21 ++++++++++++++-----
 .../drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c |  8 +++++--
 .../drm/amd/pm/powerplay/hwmgr/vega12_hwmgr.c |  6 ++++--
 .../drm/amd/pm/powerplay/hwmgr/vega20_hwmgr.c |  6 ++++--
 4 files changed, 30 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.c
index 0b181bc8931c..f62381b189ad 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.c
@@ -1554,7 +1554,10 @@ static int smu10_set_fine_grain_clk_vol(struct pp_hwmgr *hwmgr,
 		}
 
 		if (input[0] == 0) {
-			smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetMinGfxclkFrequency, &min_freq);
+			ret = smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetMinGfxclkFrequency, &min_freq);
+			if (ret)
+				return ret;
+
 			if (input[1] < min_freq) {
 				pr_err("Fine grain setting minimum sclk (%ld) MHz is less than the minimum allowed (%d) MHz\n",
 					input[1], min_freq);
@@ -1562,7 +1565,10 @@ static int smu10_set_fine_grain_clk_vol(struct pp_hwmgr *hwmgr,
 			}
 			smu10_data->gfx_actual_soft_min_freq = input[1];
 		} else if (input[0] == 1) {
-			smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetMaxGfxclkFrequency, &max_freq);
+			ret = smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetMaxGfxclkFrequency, &max_freq);
+			if (ret)
+				return ret;
+
 			if (input[1] > max_freq) {
 				pr_err("Fine grain setting maximum sclk (%ld) MHz is greater than the maximum allowed (%d) MHz\n",
 					input[1], max_freq);
@@ -1577,10 +1583,15 @@ static int smu10_set_fine_grain_clk_vol(struct pp_hwmgr *hwmgr,
 			pr_err("Input parameter number not correct\n");
 			return -EINVAL;
 		}
-		smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetMinGfxclkFrequency, &min_freq);
-		smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetMaxGfxclkFrequency, &max_freq);
-
+		ret = smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetMinGfxclkFrequency, &min_freq);
+		if (ret)
+			return ret;
 		smu10_data->gfx_actual_soft_min_freq = min_freq;
+
+		ret = smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetMaxGfxclkFrequency, &max_freq);
+		if (ret)
+			return ret;
+
 		smu10_data->gfx_actual_soft_max_freq = max_freq;
 	} else if (type == PP_OD_COMMIT_DPM_TABLE) {
 		if (size != 0) {
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 74a33b9ace6c..c60666f64601 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c
@@ -2486,9 +2486,13 @@ static int vega10_populate_and_upload_avfs_fuse_override(struct pp_hwmgr *hwmgr)
 	struct vega10_hwmgr *data = hwmgr->backend;
 	AvfsFuseOverride_t *avfs_fuse_table = &(data->smc_state_table.avfs_fuse_override_table);
 
-	smum_send_msg_to_smc(hwmgr, PPSMC_MSG_ReadSerialNumTop32, &top32);
+	result = smum_send_msg_to_smc(hwmgr, PPSMC_MSG_ReadSerialNumTop32, &top32);
+	if (result)
+		return result;
 
-	smum_send_msg_to_smc(hwmgr, PPSMC_MSG_ReadSerialNumBottom32, &bottom32);
+	result = smum_send_msg_to_smc(hwmgr, PPSMC_MSG_ReadSerialNumBottom32, &bottom32);
+	if (result)
+		return result;
 
 	serial_number = ((uint64_t)bottom32 << 32) | top32;
 
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega12_hwmgr.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega12_hwmgr.c
index c223e3a6bfca..9dd407134770 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega12_hwmgr.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega12_hwmgr.c
@@ -364,8 +364,10 @@ static void vega12_init_dpm_defaults(struct pp_hwmgr *hwmgr)
 	}
 
 	/* Get the SN to turn into a Unique ID */
-	smum_send_msg_to_smc(hwmgr, PPSMC_MSG_ReadSerialNumTop32, &top32);
-	smum_send_msg_to_smc(hwmgr, PPSMC_MSG_ReadSerialNumBottom32, &bottom32);
+	if (smum_send_msg_to_smc(hwmgr, PPSMC_MSG_ReadSerialNumTop32, &top32))
+		return;
+	if (smum_send_msg_to_smc(hwmgr, PPSMC_MSG_ReadSerialNumBottom32, &bottom32))
+		return;
 
 	adev->unique_id = ((uint64_t)bottom32 << 32) | top32;
 }
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_hwmgr.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_hwmgr.c
index f9efb0bad807..3a95f7c4c6e3 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_hwmgr.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_hwmgr.c
@@ -404,8 +404,10 @@ static void vega20_init_dpm_defaults(struct pp_hwmgr *hwmgr)
 	}
 
 	/* Get the SN to turn into a Unique ID */
-	smum_send_msg_to_smc(hwmgr, PPSMC_MSG_ReadSerialNumTop32, &top32);
-	smum_send_msg_to_smc(hwmgr, PPSMC_MSG_ReadSerialNumBottom32, &bottom32);
+	if (smum_send_msg_to_smc(hwmgr, PPSMC_MSG_ReadSerialNumTop32, &top32))
+		return;
+	if (smum_send_msg_to_smc(hwmgr, PPSMC_MSG_ReadSerialNumBottom32, &bottom32))
+		return;
 
 	adev->unique_id = ((uint64_t)bottom32 << 32) | top32;
 }
-- 
2.34.1