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authorJohan Hovold <jhovold@gmail.com>2012-01-16 00:36:52 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-02-03 09:22:26 -0800
commit5e005e788f5e28a20355be9d50c05c76b48e6d7e (patch)
treeb7032300034bc5aa09ecbbb9b5f43ca08f242a81
parent4a48179074ac1ee5ed21a6ea0c5416a65a2776f1 (diff)
downloadlinux-linaro-stable-5e005e788f5e28a20355be9d50c05c76b48e6d7e.tar.gz
USB: cp210x: initialise baud rate at open
commit cdc32fd6f7b2b2580d7f1b74563f888e4dd9eb8a upstream. The newer cp2104 devices require the baud rate to be initialised after power on. Make sure it is set when port is opened. Signed-off-by: Johan Hovold <jhovold@gmail.com> Cc: Preston Fick <preston.fick@silabs.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/usb/serial/cp210x.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index d2c40801ed85..07d297f5fe42 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -408,6 +408,10 @@ static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port)
/* Configure the termios structure */
cp210x_get_termios(tty, port);
+ /* The baud rate must be initialised on cp2104 */
+ if (tty)
+ cp210x_change_speed(tty, port, NULL);
+
return usb_serial_generic_open(tty, port);
}