Messages in this thread Patch in this message | | | Date | Wed, 01 Feb 2012 12:56:44 -0800 | From | Greg KH <> | Subject | [64/65] USB: cp210x: initialise baud rate at open |
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3.0-stable review patch. If anyone has any objections, please let me know.
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From: Johan Hovold <jhovold@gmail.com>
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>
--- drivers/usb/serial/cp210x.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -408,6 +408,10 @@ static int cp210x_open(struct tty_struct /* 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); }
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