1 files changed, 34 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3514-drm-amd-powerplay-Zero-out-power-data-in-AMDGPU_PP_S.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3514-drm-amd-powerplay-Zero-out-power-data-in-AMDGPU_PP_S.patch
new file mode 100644
index 00000000..30f90e25
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/3514-drm-amd-powerplay-Zero-out-power-data-in-AMDGPU_PP_S.patch
@@ -0,0 +1,34 @@
+From fc70b11c716de901a0c1918079bd60ae3a17676e Mon Sep 17 00:00:00 2001
+From: Tom St Denis <tom.stdenis@amd.com>
+Date: Tue, 6 Feb 2018 14:00:01 -0500
+Subject: [PATCH 3514/4131] drm/amd/powerplay: Zero out power data in
+ AMDGPU_PP_SENSOR_GPU_POWER readout
+
+Since 12 of the 16 bytes are not initialized with anything let's ensure they're
+sensibly zeroed out otherwise debugfs callers will read back garbage
+(because they assume debugfs wrote sensible data back...)
+
+Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
+Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+---
+ drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
+index ec39989..d2cd6e6 100644
+--- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
++++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
+@@ -3892,7 +3892,9 @@ static int vega10_get_gpu_power(struct pp_hwmgr *hwmgr,
+ 			return -EINVAL);
+ 
+ 	vega10_read_arg_from_smc(hwmgr, &value);
++
+ 	/* power value is an integer */
++	memset(query, 0, sizeof *query);
+ 	query->average_gpu_power = value << 8;
+ 
+ 	return 0;
+-- 
+2.7.4
+