USB: mos7720: fix hardware flow control

commit a26f009a070e840fadacb91013b2391ba7ab6cc2 upstream.

The register access to enable hardware flow control depends on the
device port number and not the port minor number.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
index 42a9523..77d974d 100644 (file)
--- a/drivers/usb/serial/mos7720.c
+++ b/drivers/usb/serial/mos7720.c
@@ -1701,7 +1701,7 @@ static void change_port_settings(struct tty_struct *tty,
                mos7720_port->shadowMCR |= (UART_MCR_XONANY);
                /* To set hardware flow control to the specified *
                 * serial port, in SP1/2_CONTROL_REG             */
-               if (port->number)
+               if (port_number)
                        write_mos_reg(serial, dummy, SP_CONTROL_REG, 0x01);
                else
                        write_mos_reg(serial, dummy, SP_CONTROL_REG, 0x02);