Bluetooth: btusb, hci_intel: Fix wait_on_bit_timeout() return value checks

wait_on_bit_timeout() returns one of the following three values:
* 0 to indicate success.
* -EINTR to indicate that a signal has been received;
* -EAGAIN to indicate timeout;
Make the wait_on_bit_timeout() callers check for these values.

Signed-off-by: Bart Van Assche <[e-mail]>
Signed-off-by: Johan Hedberg <[e-mail]>
Signed-off-by: Marcel Holtmann <[e-mail]>

drivers/bluetooth/btusb.c

···
 	err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
 				  TASK_INTERRUPTIBLE,
 				  msecs_to_jiffies(5000));
-	if (err == 1) {
+	if (err == -EINTR) {
 		BT_ERR("%s: Firmware loading interrupted", hdev->name);
-		err = -EINTR;
 		goto done;
 	}
 
···
 				  TASK_INTERRUPTIBLE,
 				  msecs_to_jiffies(1000));
 
-	if (err == 1) {
+	if (err == -EINTR) {
 		BT_ERR("%s: Device boot interrupted", hdev->name);
 		return -EINTR;
 	}

drivers/bluetooth/hci_intel.c

···
 				  TASK_INTERRUPTIBLE,
 				  msecs_to_jiffies(1000));
 
-	if (err == 1) {
+	if (err == -EINTR) {
 		bt_dev_err(hu->hdev, "Device boot interrupted");
 		return -EINTR;
 	}
···
 				  TASK_INTERRUPTIBLE,
 				  msecs_to_jiffies(1000));
 
-	if (err == 1) {
+	if (err == -EINTR) {
 		bt_dev_err(hu->hdev, "LPM transaction interrupted");
 		return -EINTR;
 	}
···
 	err = wait_on_bit_timeout(&intel->flags, STATE_DOWNLOADING,
 				  TASK_INTERRUPTIBLE,
 				  msecs_to_jiffies(5000));
-	if (err == 1) {
+	if (err == -EINTR) {
 		bt_dev_err(hdev, "Firmware loading interrupted");
 		err = -EINTR;
 		goto done;