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serial: imx: do not sysrq broken chars

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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 <sorganov@gmail.com>
Link: https://lore.kernel.org/r/20230201142700.4346-4-sorganov@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sergey Organov 2023-02-01 17:26:56 +03:00 committed by Greg Kroah-Hartman
parent 496a4471b7
commit e1c6a7e5f8
1 changed files with 2 additions and 3 deletions
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5
drivers/tty/serial/imx.c
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@ -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)