From: Evan Quan <evan.quan@amd.com>
Date: Thu, 28 Dec 2017 14:37:58 +0800
Subject: drm/amd/powerplay: set pp_num_states as 0 on error situation
Git-commit: 4dbda35ffaa3eb52ecf960b56220644158ddae12
Patch-mainline: v4.16-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/powerplay/amd_powerplay.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
+++ b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
@@ -718,6 +718,8 @@ static int pp_dpm_get_pp_num_states(void
 	struct pp_instance *pp_handle = (struct pp_instance *)handle;
 	int ret = 0;
 
+	memset(data, 0, sizeof(*data));
+
 	ret = pp_check(pp_handle);
 
 	if (ret)