USB: ssu100: add register parameter to ssu100_setregister

The function ssu100_setregister was hard coded to only set the MCR
register.  Add a register parameter so that other registers can be
set.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/usb/serial/ssu100.c b/drivers/usb/serial/ssu100.c
index 3c586b5790e1..ad5f9ae40687 100644
--- a/drivers/usb/serial/ssu100.c
+++ b/drivers/usb/serial/ssu100.c
@@ -127,9 +127,10 @@ static inline int ssu100_getregister(struct usb_device *dev,
 
 static inline int ssu100_setregister(struct usb_device *dev,
                                      unsigned short uart,
+                                     unsigned short reg,
                                      u16 data)
 {
-        u16 value = (data << 8) | UART_MCR;
+        u16 value = (data << 8) | reg;
 
         return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
                                QT_SET_GET_REGISTER, 0x40, value, uart,
@@ -159,7 +160,7 @@ static inline int update_mctrl(struct usb_device *dev, unsigned int set,
         if (set & TIOCM_RTS)
                 urb_value |= UART_MCR_RTS;
 
-        result = ssu100_setregister(dev, 0, urb_value);
+        result = ssu100_setregister(dev, 0, UART_MCR, urb_value);
         if (result < 0)
                 dbg("%s Error from MODEM_CTRL urb", __func__);
 
@@ -529,7 +530,7 @@ static void ssu100_dtr_rts(struct usb_serial_port *port, int on)
         if (!port->serial->disconnected) {
                 /* Disable flow control */
                 if (!on &&
-                    ssu100_setregister(dev, 0, 0) < 0)
+                    ssu100_setregister(dev, 0, UART_MCR, 0) < 0)
                         dev_err(&port->dev, "error from flowcontrol urb\n");
                 /* drop RTS and DTR */
                 if (on)