USB: serial: ftdi_sio: Handle the old_termios == 0 case e.g. uart_resume_port()
Handle null old_termios in ftdi_set_termios() calls from uart_resume_port().
Signed-off-by: Andrew Worsley <amworsley@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index bd4298b..13e4ecc 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -2104,6 +2104,9 @@
cflag = termios->c_cflag;
+ if (old_termios == 0)
+ goto no_skip;
+
if (old_termios->c_cflag == termios->c_cflag
&& old_termios->c_ispeed == termios->c_ispeed
&& old_termios->c_ospeed == termios->c_ospeed)
@@ -2117,6 +2120,7 @@
(termios->c_cflag & (CSIZE|PARODD|PARENB|CMSPAR|CSTOPB)))
goto no_data_parity_stop_changes;
+no_skip:
/* Set number of data bits, parity, stop bits */
urb_value = 0;