| From e5eada85fbbe16a6f329e33b8bf26a74d1a0cbd0 Mon Sep 17 00:00:00 2001 |
| From: Andrew Worsley <amworsley@gmail.com> |
| 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 <amworsley@gmail.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> |
| Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> |
| --- |
| 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 646cc5326219..882af44bf8bb 100644 |
| --- a/drivers/usb/serial/ftdi_sio.c |
| +++ b/drivers/usb/serial/ftdi_sio.c |
| @@ -2336,6 +2336,9 @@ 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) |
| @@ -2349,6 +2352,7 @@ 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; |
| -- |
| 1.8.5.2 |
| |