patch "serial: mvebu-uart: Fix to avoid a potential NULL pointer dereference" added to tty-linus

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

serial: mvebu-uart: Fix to avoid a potential NULL pointer dereference

to my tty git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git
in the tty-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From 32f47179833b63de72427131169809065db6745e Mon Sep 17 00:00:00 2001
From: Aditya Pakki <[email protected]>
Date: Mon, 18 Mar 2019 18:50:56 -0500
Subject: serial: mvebu-uart: Fix to avoid a potential NULL pointer dereference

of_match_device on failure to find a matching device can return a NULL pointer. The patch checks for such a scenrio and passes the error upstream.

---
 drivers/tty/serial/mvebu-uart.c | 3 +++
 1 file changed, 3 insertions(+)

index 231f751d1ef4..7e7b1559fa36 100644
@@ -810,6 +810,9 @@ static int mvebu_uart_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
+	if (!match)
+		return -ENODEV;
+
 	/* Assume that all UART ports have a DT alias or none has */
 	id = of_alias_get_id(pdev->dev.of_node, "serial");
 	if (!pdev->dev.of_node || id < 0)

2.21.0