This is a note to let you know that I've just added the patch titled
backlight: lcd: Fix race condition during register
to the 4.4-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:
backlight-lcd-fix-race-condition-during-register.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Sun Nov 19 12:02:55 CET 2017
From: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Date: Wed, 6 Jul 2016 19:33:05 +0200
Subject: backlight: lcd: Fix race condition during register
From: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
[ Upstream commit cc21942bce652d1a92dae85b785378256e1df1f7 ]
Once device_register is called for a device its attributes might be
accessed. As the callbacks of a lcd device's attributes make use of the
lcd_ops, the respective member must be setup before calling
device_register.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/video/backlight/lcd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/video/backlight/lcd.c
+++ b/drivers/video/backlight/lcd.c
@@ -226,6 +226,8 @@ struct lcd_device *lcd_device_register(c
dev_set_name(&new_ld->dev, "%s", name);
dev_set_drvdata(&new_ld->dev, devdata);
+ new_ld->ops = ops;
+
rc = device_register(&new_ld->dev);
if (rc) {
put_device(&new_ld->dev);
@@ -238,8 +240,6 @@ struct lcd_device *lcd_device_register(c
return ERR_PTR(rc);
}
- new_ld->ops = ops;
-
return new_ld;
}
EXPORT_SYMBOL(lcd_device_register);
Patches currently in stable-queue which might be from u.kleine-koenig@xxxxxxxxxxxxxx are
queue-4.4/backlight-lcd-fix-race-condition-during-register.patch