Bluetooth: fix crash with quirky dongles doing sound

Quirky dongles sometimes do not use the iso interface which
causes a crash with runtime PM

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 4cefa91..664f1cc 100644 (file)
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -829,7 +829,7 @@ static void btusb_work(struct work_struct *work)
 
        if (hdev->conn_hash.sco_num > 0) {
                if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
-                       err = usb_autopm_get_interface(data->isoc);
+                       err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
                        if (err < 0) {
                                clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
                                usb_kill_anchored_urbs(&data->isoc_anchor);
@@ -858,7 +858,7 @@ static void btusb_work(struct work_struct *work)
 
                __set_isoc_interface(hdev, 0);
                if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
-                       usb_autopm_put_interface(data->isoc);
+                       usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
        }
 }