diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/serial/8250.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c index c129a0e8e807..c0c472ac5311 100644 --- a/drivers/serial/8250.c +++ b/drivers/serial/8250.c @@ -1310,7 +1310,8 @@ static unsigned int check_modem_status(struct uart_8250_port *up) { unsigned int status = serial_in(up, UART_MSR); - if (status & UART_MSR_ANY_DELTA && up->ier & UART_IER_MSI) { + if (status & UART_MSR_ANY_DELTA && up->ier & UART_IER_MSI && + up->port.info != NULL) { if (status & UART_MSR_TERI) up->port.icount.rng++; if (status & UART_MSR_DDSR) |