rt2x00: Don't queue ieee80211 work after USB removal

[safe/jmp/linux-2.6] / drivers / net / wireless / rt2x00 / rt2x00usb.c

diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.c b/drivers/net/wireless/rt2x00/rt2x00usb.c
index 5015448..f02b48a 100644 (file)
--- a/drivers/net/wireless/rt2x00/rt2x00usb.c
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.c
@@ -47,6 +47,8 @@ int rt2x00usb_vendor_request(struct rt2x00_dev *rt2x00dev,
            (requesttype == USB_VENDOR_REQUEST_IN) ?
            usb_rcvctrlpipe(usb_dev, 0) : usb_sndctrlpipe(usb_dev, 0);
 
+       if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
+               return -ENODEV;
 
        for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
                status = usb_control_msg(usb_dev, pipe, request, requesttype,
@@ -60,8 +62,10 @@ int rt2x00usb_vendor_request(struct rt2x00_dev *rt2x00dev,
                 * -ENODEV: Device has disappeared, no point continuing.
                 * All other errors: Try again.
                 */
-               else if (status == -ENODEV)
+               else if (status == -ENODEV) {
+                       clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);
                        break;
+               }
        }
 
        ERROR(rt2x00dev,
@@ -161,6 +165,9 @@ int rt2x00usb_regbusy_read(struct rt2x00_dev *rt2x00dev,
 {
        unsigned int i;
 
+       if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
+               return -ENODEV;
+
        for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
                rt2x00usb_register_read_lock(rt2x00dev, offset, reg);
                if (!rt2x00_get_field32(*reg, field))