This is a note to let you know that I've just added the patch titled
firmware/sysfb: Disable sysfb for firmware buffers with unknown parent
to the 6.11-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:
firmware-sysfb-disable-sysfb-for-firmware-buffers-with-unknown-parent.patch
and it can be found in the queue-6.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From ad604f0a4c040dcb8faf44dc72db25e457c28076 Mon Sep 17 00:00:00 2001
From: Thomas Zimmermann <[email protected]>
Date: Tue, 24 Sep 2024 10:41:03 +0200
Subject: firmware/sysfb: Disable sysfb for firmware buffers with unknown parent
From: Thomas Zimmermann <[email protected]>
commit ad604f0a4c040dcb8faf44dc72db25e457c28076 upstream.
The sysfb framebuffer handling only operates on graphics devices
that provide the system's firmware framebuffer. If that device is
not known, assume that any graphics device has been initialized by
firmware.
Fixes a problem on i915 where sysfb does not release the firmware
framebuffer after the native graphics driver loaded.
Reported-by: Borah, Chaitanya Kumar <[email protected]>
Closes:
https://lore.kernel.org/dri-devel/sj1pr11mb6129efb8ce63d1ef6d932f94b9...@sj1pr11mb6129.namprd11.prod.outlook.com/
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/12160
Signed-off-by: Thomas Zimmermann <[email protected]>
Fixes: b49420d6a1ae ("video/aperture: optionally match the device in
sysfb_disable()")
Cc: Javier Martinez Canillas <[email protected]>
Cc: Thomas Zimmermann <[email protected]>
Cc: Helge Deller <[email protected]>
Cc: Sam Ravnborg <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Alex Deucher <[email protected]>
Cc: [email protected]
Cc: Linux regression tracking (Thorsten Leemhuis) <[email protected]>
Cc: <[email protected]> # v6.11+
Acked-by: Alex Deucher <[email protected]>
Reviewed-by: Javier Martinez Canillas <[email protected]>
Link:
https://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/firmware/sysfb.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/firmware/sysfb.c
+++ b/drivers/firmware/sysfb.c
@@ -67,9 +67,11 @@ static bool sysfb_unregister(void)
void sysfb_disable(struct device *dev)
{
struct screen_info *si = &screen_info;
+ struct device *parent;
mutex_lock(&disable_lock);
- if (!dev || dev == sysfb_parent_dev(si)) {
+ parent = sysfb_parent_dev(si);
+ if (!dev || !parent || dev == parent) {
sysfb_unregister();
disabled = true;
}
Patches currently in stable-queue which might be from [email protected] are
queue-6.11/firmware-sysfb-disable-sysfb-for-firmware-buffers-with-unknown-parent.patch
queue-6.11/drm-consistently-use-struct-drm_mode_rect-for-fb_damage_clips.patch
