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

serial: liteuart: Fix NULL pointer dereference in ->remove()

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 0f55f89d98c8b3e12b4f55f71c127a173e29557c Mon Sep 17 00:00:00 2001

From: Ilia Sergachev silia@ethz.ch Date: Mon, 15 Nov 2021 22:49:44 +0100 Subject: serial: liteuart: Fix NULL pointer dereference in ->remove()

drvdata has to be set in _probe() - otherwise platform_get_drvdata() causes null pointer dereference BUG in _remove().

Fixes: 1da81e5562fa ("drivers/tty/serial: add LiteUART driver") Cc: stable stable@vger.kernel.org Reviewed-by: Johan Hovold johan@kernel.org Signed-off-by: Ilia Sergachev silia@ethz.ch Link: https://lore.kernel.org/r/20211115224944.23f8c12b@dtkw Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/tty/serial/liteuart.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/drivers/tty/serial/liteuart.c b/drivers/tty/serial/liteuart.c index dbc0559a9157..f075f4ff5fcf 100644 --- a/drivers/tty/serial/liteuart.c +++ b/drivers/tty/serial/liteuart.c @@ -285,6 +285,8 @@ static int liteuart_probe(struct platform_device *pdev) port->line = dev_id; spin_lock_init(&port->lock);

+ platform_set_drvdata(pdev, port); + return uart_add_one_port(&liteuart_driver, &uart->port); }