This is a note to let you know that I've just added the patch titled
drm/vmwgfx: Initialize drm_mode_fb_cmd2
to the 5.17-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-vmwgfx-initialize-drm_mode_fb_cmd2.patch
and it can be found in the queue-5.17 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 3059d9b9f6aa433a55b9d0d21b566396d5497c33 Mon Sep 17 00:00:00 2001
From: Zack Rusin <zackr@xxxxxxxxxx>
Date: Wed, 2 Mar 2022 10:24:24 -0500
Subject: drm/vmwgfx: Initialize drm_mode_fb_cmd2
From: Zack Rusin <zackr@xxxxxxxxxx>
commit 3059d9b9f6aa433a55b9d0d21b566396d5497c33 upstream.
Transition to drm_mode_fb_cmd2 from drm_mode_fb_cmd left the structure
unitialized. drm_mode_fb_cmd2 adds a few additional members, e.g. flags
and modifiers which were never initialized. Garbage in those members
can cause random failures during the bringup of the fbcon.
Initializing the structure fixes random blank screens after bootup due
to flags/modifiers mismatches during the fbcon bring up.
Fixes: dabdcdc9822a ("drm/vmwgfx: Switch to mode_cmd2")
Signed-off-by: Zack Rusin <zackr@xxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # v4.10+
Reviewed-by: Martin Krastev <krastevm@xxxxxxxxxx>
Reviewed-by: Maaz Mombasawala <mombasawalam@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20220302152426.885214-7-zack@xxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/vmwgfx/vmwgfx_fb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
@@ -483,7 +483,7 @@ static int vmw_fb_kms_detach(struct vmw_
static int vmw_fb_kms_framebuffer(struct fb_info *info)
{
- struct drm_mode_fb_cmd2 mode_cmd;
+ struct drm_mode_fb_cmd2 mode_cmd = {0};
struct vmw_fb_par *par = info->par;
struct fb_var_screeninfo *var = &info->var;
struct drm_framebuffer *cur_fb;
Patches currently in stable-queue which might be from zackr@xxxxxxxxxx are
queue-5.17/drm-vmwgfx-disable-command-buffers-on-svga3-without-gbobjects.patch
queue-5.17/drm-vmwgfx-fix-fencing-on-svgav3.patch
queue-5.17/drm-vmwgfx-initialize-drm_mode_fb_cmd2.patch
