Patch "extcon: return error code on failure" has been added to the 4.9-stable tree

Patch "extcon: return error code on failure" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    extcon: return error code on failure

to the 4.9-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:
     extcon-return-error-code-on-failure.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 5b11ebedd6a8bb4271b796e498cd15c0fe1133b6 Mon Sep 17 00:00:00 2001
From: Pan Bian <bianpan2016@163.com>
Date: Sat, 3 Dec 2016 16:56:49 +0800
Subject: extcon: return error code on failure

From: Pan Bian <bianpan2016@163.com>

commit 5b11ebedd6a8bb4271b796e498cd15c0fe1133b6 upstream.

Function get_zeroed_page() returns a NULL pointer if there is no enough
memory. In function extcon_sync(), it returns 0 if the call to
get_zeroed_page() fails. The return value 0 indicates success in the
context, which is incosistent with the execution status. This patch
fixes the bug by returning -ENOMEM.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188611

Signed-off-by: Pan Bian <bianpan2016@163.com>
Fixes: a580982f0836e
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/extcon/extcon.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/extcon/extcon.c
+++ b/drivers/extcon/extcon.c
@@ -453,7 +453,7 @@ int extcon_sync(struct extcon_dev *edev,
 		dev_err(&edev->dev, "out of memory in extcon_set_state\n");
 		kobject_uevent(&edev->dev.kobj, KOBJ_CHANGE);
 
-		return 0;
+		return -ENOMEM;
 	}
 
 	length = name_show(&edev->dev, NULL, prop_buf);


Patches currently in stable-queue which might be from bianpan2016@163.com are

queue-4.9/extcon-return-error-code-on-failure.patch