Bluetooth: btusb: also be quiet when suspending

usb_submit_urb() returns -ENODEV when a usb device is disconnected. In
commit 4935f1c1 ("Bluetooth: btusb: be
quiet on device disconnect") I stopped treating that return as an error
in the three btusb_*_complete() functions.

It turns out btusb_send_frame() generates a similar error if the system
is suspended while the bluetooth usb device is enabled. The sensible
thing to do here seems to be to treat -ENODEV (and -EPERM) just like the
btusb_*_complete() functions now do.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

drivers/bluetooth/btusb.c

@@ -767,7 +767,9 @@ static int btusb_send_frame(struct sk_buff *skb)
 
 	err = usb_submit_urb(urb, GFP_ATOMIC);
 	if (err < 0) {
-		BT_ERR("%s urb %p submission failed", hdev->name, urb);
+		if (err != -EPERM && err != -ENODEV)
+			BT_ERR("%s urb %p submission failed (%d)",
+						hdev->name, urb, -err);
 		kfree(urb->setup_packet);
 		usb_unanchor_urb(urb);
 	} else {