rt2x00: use timeout in rt2x00usb_vendor_request

Use provided timeout value in rt2x00usb_vendor_request() instead
of iterating REGISTER_BUSY_COUNT times.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 10 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.c b/drivers/net/wireless/rt2x00/rt2x00usb.c
index dc85d3e0ffe5..258e2a87c5ea 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.c
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.c
@@ -42,31 +42,27 @@ int rt2x00usb_vendor_request(struct rt2x00_dev *rt2x00dev,
 {
         struct usb_device *usb_dev = to_usb_device_intf(rt2x00dev->dev);
         int status;
-        unsigned int i;
         unsigned int pipe =
             (requesttype == USB_VENDOR_REQUEST_IN) ?
             usb_rcvctrlpipe(usb_dev, 0) : usb_sndctrlpipe(usb_dev, 0);
+        unsigned long expire = jiffies + msecs_to_jiffies(timeout);
 
         if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
                 return -ENODEV;
 
-        for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
+        do {
                 status = usb_control_msg(usb_dev, pipe, request, requesttype,
                                          value, offset, buffer, buffer_length,
-                                         timeout);
+                                         timeout / 2);
                 if (status >= 0)
                         return 0;
 
-                /*
-                 * Check for errors
-                 * -ENODEV: Device has disappeared, no point continuing.
-                 * All other errors: Try again.
-                 */
-                else if (status == -ENODEV) {
+                if (status == -ENODEV) {
+                        /* Device has disappeared. */
                         clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
                         break;
                 }
-        }
+        } while (time_before(jiffies, expire));
 
         /* If the port is powered down, we get a -EPROTO error, and this
          * leads to a endless loop. So just say that the device is gone.