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>

1 files changed, 10 insertions, 7 deletions

diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
index 204f0f928f6c..2a3fabcf5186 100644
--- 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,