From 9c9d7bf530c4d01e695fd9e8ba69006177d36a14 Mon Sep 17 00:00:00 2001 From: Andrew Worsley Date: Tue, 22 Nov 2011 20:00:19 +1100 Subject: [PATCH] USB: serial: ftdi_sio: Handle the old_termios == 0 case e.g. uart_resume_port() commit c515598e0f5769916c31c00392cc2bfe6af74e55 upstream. Handle null old_termios in ftdi_set_termios() calls from uart_resume_port(). Signed-off-by: Andrew Worsley Signed-off-by: Greg Kroah-Hartman Cc: Lotfi Manseur Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 7639cba79092d..457122a5a965a 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -2141,6 +2141,9 @@ 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) @@ -2154,6 +2157,7 @@ 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; -- 2.47.2