Bluetooth: btusb: Remove unneeded btusb_wait_on_bit_timeout()

There's now a proper wait_on_bit_timeout() API in linux/wait.h so we can
remove our own copy from btusb.c. Our copy had the task state and
timeout variables swapped so the patch also changes their order.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

drivers/bluetooth/btusb.c

@@ -338,16 +338,6 @@ struct btusb_data {
 	int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 };
 
-static int btusb_wait_on_bit_timeout(void *word, int bit, unsigned long timeout,
-				     unsigned mode)
-{
-	might_sleep();
-	if (!test_bit(bit, word))
-		return 0;
-	return out_of_line_wait_on_bit_timeout(word, bit, bit_wait_timeout,
-					       mode, timeout);
-}
-
 static inline void btusb_free_frags(struct btusb_data *data)
 {
 	unsigned long flags;
@@ -2196,9 +2186,9 @@ static int btusb_setup_intel_new(struct hci_dev *hdev)
 	 * and thus just timeout if that happens and fail the setup
 	 * of this device.
 	 */
-	err = btusb_wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
-					msecs_to_jiffies(5000),
-					TASK_INTERRUPTIBLE);
+	err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
+				  TASK_INTERRUPTIBLE,
+				  msecs_to_jiffies(5000));
 	if (err == 1) {
 		BT_ERR("%s: Firmware loading interrupted", hdev->name);
 		err = -EINTR;
@@ -2249,9 +2239,9 @@ static int btusb_setup_intel_new(struct hci_dev *hdev)
 	 */
 	BT_INFO("%s: Waiting for device to boot", hdev->name);
 
-	err = btusb_wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
-					msecs_to_jiffies(1000),
-					TASK_INTERRUPTIBLE);
+	err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
+				  TASK_INTERRUPTIBLE,
+				  msecs_to_jiffies(1000));
 
 	if (err == 1) {
 		BT_ERR("%s: Device boot interrupted", hdev->name);