USB: serial: navman: 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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/serial/navman.c b/drivers/usb/serial/navman.c
index 9070111..7f337c9 100644
--- a/drivers/usb/serial/navman.c
+++ b/drivers/usb/serial/navman.c
@@ -37,9 +37,10 @@
 	struct usb_serial_port *port = urb->context;
 	unsigned char *data = urb->transfer_buffer;
 	struct tty_struct *tty;
+	int status = urb->status;
 	int result;
 
-	switch (urb->status) {
+	switch (status) {
 	case 0:
 		/* success */
 		break;
@@ -48,11 +49,11 @@
 	case -ESHUTDOWN:
 		/* this urb is terminated, clean up */
 		dbg("%s - urb shutting down with status: %d",
-		    __FUNCTION__, urb->status);
+		    __FUNCTION__, status);
 		return;
 	default:
 		dbg("%s - nonzero urb status received: %d",
-		    __FUNCTION__, urb->status);
+		    __FUNCTION__, status);
 		goto exit;
 	}