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path: root/drivers/usb/serial
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Diffstat (limited to 'drivers/usb/serial')
-rw-r--r--drivers/usb/serial/ftdi_sio.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index bd4298bb6750..13e4ecc6e43d 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -2104,6 +2104,9 @@ static void ftdi_set_termios(struct tty_struct *tty,
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 @@ static void ftdi_set_termios(struct tty_struct *tty,
(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;