Bluetooth: Fix cancel_delayed_work_sync usage with locks

The cancel_delayed_work_sync function should not be used if we hold any
locks. Luckily all places where this is the case it is also safe to use
the non-sync version.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index be4c3d0..263fa27 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -149,7 +149,7 @@
 	i = 0;
 	list_for_each_entry(d, &hci_dev_list, list) {
 		if (test_and_clear_bit(HCI_AUTO_OFF, &d->flags))
-			cancel_delayed_work_sync(&d->power_off);
+			cancel_delayed_work(&d->power_off);
 
 		if (test_bit(HCI_SETUP, &d->flags))
 			continue;
@@ -398,7 +398,7 @@
 	if (cp->val)
 		scan |= SCAN_INQUIRY;
 	else
-		cancel_delayed_work_sync(&hdev->discov_off);
+		cancel_delayed_work(&hdev->discov_off);
 
 	err = hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
 	if (err < 0)