USB: serial: io_ti: 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: Al Borchers <alborchers@steinerpoint.com>
Cc: Peter Berger <pberger@brimson.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c
index fbc2e02..1c6850a 100644 (file)
--- a/drivers/usb/serial/io_ti.c
+++ b/drivers/usb/serial/io_ti.c
@@ -1719,13 +1719,14 @@ static void edge_interrupt_callback (struct urb *urb)
        int length = urb->actual_length;
        int port_number;
        int function;
-       int status;
+       int retval;
        __u8 lsr;
        __u8 msr;
+       int status = urb->status;
 
        dbg("%s", __FUNCTION__);
 
-       switch (urb->status) {
+       switch (status) {
        case 0:
                /* success */
                break;
@@ -1733,10 +1734,12 @@ static void edge_interrupt_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:
-               dev_err(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __FUNCTION__, urb->status);
+               dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
+                       "%d\n", __FUNCTION__, status);
                goto exit;
        }
 
@@ -1794,10 +1797,10 @@ static void edge_interrupt_callback (struct urb *urb)
        }
 
 exit:
-       status = usb_submit_urb (urb, GFP_ATOMIC);
-       if (status)
+       retval = usb_submit_urb (urb, GFP_ATOMIC);
+       if (retval)
                dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n",
-                        __FUNCTION__, status);
+                        __FUNCTION__, retval);
 }
 
 static void edge_bulk_in_callback (struct urb *urb)
@@ -1805,12 +1808,13 @@ static void edge_bulk_in_callback (struct urb *urb)
        struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
        unsigned char *data = urb->transfer_buffer;
        struct tty_struct *tty;
-       int status = 0;
+       int retval = 0;
        int port_number;
+       int status = urb->status;
 
        dbg("%s", __FUNCTION__);
 
-       switch (urb->status) {
+       switch (status) {
        case 0:
                /* success */
                break;
@@ -1818,17 +1822,18 @@ static void edge_bulk_in_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:
                dev_err (&urb->dev->dev,"%s - nonzero read bulk status received: %d\n",
-                    __FUNCTION__, urb->status );
+                    __FUNCTION__, status);
        }
 
-       if (urb->status == -EPIPE)
+       if (status == -EPIPE)
                goto exit;
 
-       if (urb->status) {
+       if (status) {
                dev_err(&urb->dev->dev,"%s - stopping read!\n", __FUNCTION__);
                return;
        }
@@ -1862,14 +1867,14 @@ exit:
        spin_lock(&edge_port->ep_lock);
        if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) {
                urb->dev = edge_port->port->serial->dev;
-               status = usb_submit_urb(urb, GFP_ATOMIC);
+               retval = usb_submit_urb(urb, GFP_ATOMIC);
        } else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) {
                edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
        }
        spin_unlock(&edge_port->ep_lock);
-       if (status)
+       if (retval)
                dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n",
-                        __FUNCTION__, status);
+                        __FUNCTION__, retval);
 }
 
 static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length)
@@ -1896,12 +1901,13 @@ static void edge_bulk_out_callback (struct urb *urb)
 {
        struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
        struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+       int status = urb->status;
 
        dbg ("%s - port %d", __FUNCTION__, port->number);
 
        edge_port->ep_write_urb_in_use = 0;
 
-       switch (urb->status) {
+       switch (status) {
        case 0:
                /* success */
                break;
@@ -1909,11 +1915,12 @@ static void edge_bulk_out_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:
-               dev_err (&urb->dev->dev,"%s - nonzero write bulk status received: %d\n",
-                    __FUNCTION__, urb->status);
+               dev_err(&urb->dev->dev, "%s - nonzero write bulk status "
+                       "received: %d\n", __FUNCTION__, status);
        }
 
        /* send any buffered data */