USB: serial: mct_u232: clean up urb->status usage

This done in anticipation of removal of urb->status, which will make
that patch easier to review and apply in the future.

Cc: <linux-usb-devel@lists.sourceforge.net>
Cc: Wolfgang Grandegger <wolfgang@ces.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
index 204f0f9..2a3fabc 100644 (file)
--- a/drivers/usb/serial/mct_u232.c
+++ b/drivers/usb/serial/mct_u232.c
@@ -516,10 +516,11 @@ static void mct_u232_read_int_callback (struct urb *urb)
        struct usb_serial *serial = port->serial;
        struct tty_struct *tty;
        unsigned char *data = urb->transfer_buffer;
-       int status;
+       int retval;
+       int status = urb->status;
        unsigned long flags;
 
-       switch (urb->status) {
+       switch (status) {
        case 0:
                /* success */
                break;
@@ -527,10 +528,12 @@ static void mct_u232_read_int_callback (struct urb *urb)
        case -ENOENT:
        case -ESHUTDOWN:
                /* this urb is terminated, clean up */
-               dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
+               dbg("%s - urb shutting down with status: %d",
+                   __FUNCTION__, status);
                return;
        default:
-               dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
+               dbg("%s - nonzero urb status received: %d",
+                   __FUNCTION__, status);
                goto exit;
        }
 
@@ -594,10 +597,10 @@ static void mct_u232_read_int_callback (struct urb *urb)
 #endif
        spin_unlock_irqrestore(&priv->lock, flags);
 exit:
-       status = usb_submit_urb (urb, GFP_ATOMIC);
-       if (status)
+       retval = usb_submit_urb (urb, GFP_ATOMIC);
+       if (retval)
                err ("%s - usb_submit_urb failed with result %d",
-                    __FUNCTION__, status);
+                    __FUNCTION__, retval);
 } /* mct_u232_read_int_callback */
 
 static void mct_u232_set_termios (struct usb_serial_port *port,