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

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

to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-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 754f39158441f4c0d7a8255209dd9a939f08ce80 Mon Sep 17 00:00:00 2001

From: Greg Kroah-Hartman gregkh@linuxfoundation.org Date: Mon, 3 May 2021 13:56:32 +0200 Subject: Revert "serial: mvebu-uart: Fix to avoid a potential NULL pointer dereference"

This reverts commit 32f47179833b63de72427131169809065db6745e.

Because of recent interactions with developers from @umn.edu, all commits from them have been recently re-reviewed to ensure if they were correct or not.

Upon review, this commit was found to be not be needed at all as the change was useless because this function can only be called when of_match_device matched on something. So it should be reverted.

Cc: Aditya Pakki pakki001@umn.edu Cc: stable stable@vger.kernel.org Fixes: 32f47179833b ("serial: mvebu-uart: Fix to avoid a potential NULL pointer dereference") Acked-by: Jiri Slaby jirislaby@kernel.org Link: https://lore.kernel.org/r/20210503115736.2104747-6-gregkh@linuxfoundation.or... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/tty/serial/mvebu-uart.c | 3 --- 1 file changed, 3 deletions(-)

diff --git a/drivers/tty/serial/mvebu-uart.c b/drivers/tty/serial/mvebu-uart.c index e0c00a1b0763..51b0ecabf2ec 100644 --- a/drivers/tty/serial/mvebu-uart.c +++ b/drivers/tty/serial/mvebu-uart.c @@ -818,9 +818,6 @@ 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)