From e1c6a7e5f87d66fce5c6890845400f8425acda4f Mon Sep 17 00:00:00 2001 From: Sergey Organov Date: Wed, 1 Feb 2023 17:26:56 +0300 Subject: [PATCH] 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: Sergey Organov Link: https://lore.kernel.org/r/20230201142700.4346-4-sorganov@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/imx.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 2812222b53b79..bd5d426c28fb6 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -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) -- 2.30.2