This is a note to let you know that I've just added the patch titled
[media] imx-media-of: avoid uninitialized variable warning
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:
imx-media-of-avoid-uninitialized-variable-warning.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 arnd@xxxxxxxx Thu Oct 5 11:08:57 2017
From: Arnd Bergmann <arnd@xxxxxxxx>
Date: Wed, 4 Oct 2017 15:34:55 +0200
Subject: [media] imx-media-of: avoid uninitialized variable warning
To: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>, stable@xxxxxxxxxxxxxxx, Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>, Steve Longerbeam <steve_longerbeam@xxxxxxxxxx>, Hans Verkuil <hans.verkuil@xxxxxxxxx>, Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>, Steve Longerbeam <slongerbeam@xxxxxxxxx>, Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>, Russell King <rmk+kernel@xxxxxxxxxxxxxxx>, linux-media@xxxxxxxxxxxxxxx, devel@xxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
Message-ID: <20171004133507.3539072-1-arnd@xxxxxxxx>
From: Arnd Bergmann <arnd@xxxxxxxx>
Replaces upstream commit 0b2e9e7947e7 ("media: staging/imx: remove
confusing IS_ERR_OR_NULL usage")
We get a harmless warning about a potential uninitialized variable
use in the driver:
drivers/staging/media/imx/imx-media-of.c: In function 'of_parse_subdev':
drivers/staging/media/imx/imx-media-of.c:216:4: warning: 'remote_np' may be used uninitialized in this function [-Wmaybe-uninitialized]
I reworked that code to be easier to understand by gcc in mainline,
but that commit is too large to backport. This is a much simpler
workaround, avoiding the warning by adding a fake initialization
to the variable. The driver was only introduced in linux-4.13,
so the workaround is not needed for earlier stable kernels.
Fixes: e130291212df ("[media] media: Add i.MX media core driver")
Cc: stable@xxxxxxxxxxxxxxx
Cc: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
Cc: Steve Longerbeam <steve_longerbeam@xxxxxxxxxx>
Cc: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/media/imx/imx-media-of.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/staging/media/imx/imx-media-of.c
+++ b/drivers/staging/media/imx/imx-media-of.c
@@ -167,7 +167,7 @@ of_parse_subdev(struct imx_media_dev *im
of_parse_sensor(imxmd, imxsd, sd_np);
for (i = 0; i < num_pads; i++) {
- struct device_node *epnode = NULL, *port, *remote_np;
+ struct device_node *epnode = NULL, *port, *remote_np = NULL;
struct imx_media_subdev *remote_imxsd;
struct imx_media_pad *pad;
int remote_pad;
Patches currently in stable-queue which might be from arnd@xxxxxxxx are
queue-4.13/imx-media-of-avoid-uninitialized-variable-warning.patch