Commit e1c6a7e5 authored by Sergey Organov's avatar Sergey Organov Committed by Greg Kroah-Hartman
Browse files

serial: imx: do not sysrq broken chars 



Do not call uart_handle_sysrq_char() if we got any receive error along with
the character, as we don't want random junk to be considered a sysrq.

Signed-off-by: default avatarSergey Organov <sorganov@gmail.com>
Link: https://lore.kernel.org/r/20230201142700.4346-4-sorganov@gmail.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 496a4471

drivers/tty/serial/imx.c

+2 −3
Original line number Diff line number Diff line
@@ -913,9 +913,6 @@ static irqreturn_t __imx_uart_rxint(int irq, void *dev_id) 
				continue;

		}



		if (uart_handle_sysrq_char(&sport->port, (unsigned char)rx))

			continue;



		if (unlikely(rx & URXD_ERR)) {

			if (rx & URXD_BRK)

				sport->port.icount.brk++;
@@ -944,6 +941,8 @@ static irqreturn_t __imx_uart_rxint(int irq, void *dev_id) 
				flg = TTY_OVERRUN;



			sport->port.sysrq = 0;

		} else if (uart_handle_sysrq_char(&sport->port, (unsigned char)rx)) {

			continue;

		}



		if (sport->port.ignore_status_mask & URXD_DUMMY_READ)