Patch "extcon: palmas: Check the parent instance to prevent the NULL" has been added to the 3.18-stable tree

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

extcon: palmas: Check the parent instance to prevent the NULL

to the 3.18-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-palmas-check-the-parent-instance-to-prevent-the-null.patch
and it can be found in the queue-3.18 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Roger Quadros <[email protected]>
Date: Thu, 8 Dec 2016 10:45:31 +0200
Subject: extcon: palmas: Check the parent instance to prevent the NULL

From: Roger Quadros <[email protected]>

[ Upstream commit 9fe172b9be532acc23e35ba693700383ab775e66 ]

extcon-palmas must be child of palmas and expects parent's drvdata to be valid. Check for non NULL parent drvdata and fail if it is NULL. Not doing so will result in a NULL pointer dereference later in the probe() parent drvdata is NULL (e.g. misplaced extcon-palmas node in device tree).

---
 drivers/extcon/extcon-palmas.c |    5 +++++
 1 file changed, 5 insertions(+)

@@ -150,6 +150,11 @@ static int palmas_usb_probe(struct platf
 	struct palmas_usb *palmas_usb;
 	int status;
 
+	if (!palmas) {
+		dev_err(&pdev->dev, "failed to get valid parent\n");
+		return -EINVAL;
+	}
+
 	palmas_usb = devm_kzalloc(&pdev->dev, sizeof(*palmas_usb), GFP_KERNEL);
 	if (!palmas_usb)
 		return -ENOMEM;

Patches currently in stable-queue which might be from [email protected] are

queue-3.18/extcon-palmas-check-the-parent-instance-to-prevent-the-null.patch