USB: class: cdc-acm: 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.

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

1 files changed, 10 insertions, 8 deletions

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index cd51520c7e7..fe940e0536e 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -257,9 +257,10 @@ static void acm_ctrl_irq(struct urb *urb)
         struct usb_cdc_notification *dr = urb->transfer_buffer;
         unsigned char *data;
         int newctrl;
-        int status;
+        int retval;
+        int status = urb->status;
 
-        switch (urb->status) {
+        switch (status) {
         case 0:
                 /* success */
                 break;
@@ -267,10 +268,10 @@ static void acm_ctrl_irq(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;
         }
 
@@ -311,10 +312,10 @@ static void acm_ctrl_irq(struct urb *urb)
                         break;
         }
 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);
 }
 
 /* data interface returns incoming bytes, or we got unthrottled */
@@ -324,7 +325,8 @@ static void acm_read_bulk(struct urb *urb)
         struct acm_ru *rcv = urb->context;
         struct acm *acm = rcv->instance;
         int status = urb->status;
-        dbg("Entering acm_read_bulk with status %d", urb->status);
+
+        dbg("Entering acm_read_bulk with status %d", status);
 
         if (!ACM_READY(acm))
                 return;