This is a note to let you know that I've just added the patch titled
drm/amd/powerplay: fix uninitialized variable
to the 4.13-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-amd-powerplay-fix-uninitialized-variable.patch
and it can be found in the queue-4.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8b95f4f730cba02ef6febbdc4ca7e55ca045b00e Mon Sep 17 00:00:00 2001
From: Rex Zhu <Rex.Zhu@xxxxxxx>
Date: Fri, 20 Oct 2017 15:07:41 +0800
Subject: drm/amd/powerplay: fix uninitialized variable
From: Rex Zhu <Rex.Zhu@xxxxxxx>
commit 8b95f4f730cba02ef6febbdc4ca7e55ca045b00e upstream.
refresh_rate was not initialized when program
display gap.
this patch can fix vce ring test failed
when do S3 on Polaris10.
bug: https://bugs.freedesktop.org/show_bug.cgi?id=103102
bug: https://bugzilla.kernel.org/show_bug.cgi?id=196615
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Rex Zhu <Rex.Zhu@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
@@ -830,7 +830,7 @@ uint32_t smu7_get_xclk(struct pp_hwmgr *
{
uint32_t reference_clock, tmp;
struct cgs_display_info info = {0};
- struct cgs_mode_info mode_info;
+ struct cgs_mode_info mode_info = {0};
info.mode_info = &mode_info;
@@ -3951,10 +3951,9 @@ static int smu7_program_display_gap(stru
uint32_t ref_clock;
uint32_t refresh_rate = 0;
struct cgs_display_info info = {0};
- struct cgs_mode_info mode_info;
+ struct cgs_mode_info mode_info = {0};
info.mode_info = &mode_info;
-
cgs_get_active_displays_info(hwmgr->device, &info);
num_active_displays = info.display_count;
@@ -3970,6 +3969,7 @@ static int smu7_program_display_gap(stru
frame_time_in_us = 1000000 / refresh_rate;
pre_vbi_time_in_us = frame_time_in_us - 200 - mode_info.vblank_time_us;
+
data->frame_time_x2 = frame_time_in_us * 2 / 100;
display_gap2 = pre_vbi_time_in_us * (ref_clock / 100);
Patches currently in stable-queue which might be from Rex.Zhu@xxxxxxx are
queue-4.13/drm-amd-powerplay-fix-uninitialized-variable.patch