Commit 32f47179 authored Mar 18, 2019 by Aditya Pakki Committed by Greg Kroah-Hartman Mar 19, 2019

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.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 9e98c678

drivers/tty/serial/mvebu-uart.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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)

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