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authorAndrew Worsley <amworsley@gmail.com>2011-11-22 10:00:19 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2011-11-27 04:58:47 +0100
commitc515598e0f5769916c31c00392cc2bfe6af74e55 (patch)
tree0ad96e7c288d9f953c537e1959d76ff70fbddae0 /drivers
parentNLS: raname "maxlen" to "maxout" in UTF conversion routines (diff)
downloadlinux-c515598e0f5769916c31c00392cc2bfe6af74e55.tar.xz
linux-c515598e0f5769916c31c00392cc2bfe6af74e55.zip
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>
Diffstat (limited to 'drivers')
-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;