Bluetooth: Replace spin_lock by mutex in hci_dev

Now we run everything in HCI in process context, so it's a better idea use
mutex instead spin_lock. The macro remains hci_dev_lock() (and I got rid
of hci_dev_lock_bh()), of course.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index f8e6aa3..c3c1ec8 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -402,7 +402,7 @@
 	struct inquiry_cache *cache = &hdev->inq_cache;
 	struct inquiry_entry *e;
 
-	hci_dev_lock_bh(hdev);
+	hci_dev_lock(hdev);
 
 	for (e = cache->list; e; e = e->next) {
 		struct inquiry_data *data = &e->data;
@@ -415,7 +415,7 @@
 			   data->rssi, data->ssp_mode, e->timestamp);
 	}
 
-	hci_dev_unlock_bh(hdev);
+	hci_dev_unlock(hdev);
 
 	return 0;
 }
@@ -437,12 +437,12 @@
 	struct hci_dev *hdev = f->private;
 	struct bdaddr_list *b;
 
-	hci_dev_lock_bh(hdev);
+	hci_dev_lock(hdev);
 
 	list_for_each_entry(b, &hdev->blacklist, list)
 		seq_printf(f, "%s\n", batostr(&b->bdaddr));
 
-	hci_dev_unlock_bh(hdev);
+	hci_dev_unlock(hdev);
 
 	return 0;
 }
@@ -481,12 +481,12 @@
 	struct hci_dev *hdev = f->private;
 	struct bt_uuid *uuid;
 
-	hci_dev_lock_bh(hdev);
+	hci_dev_lock(hdev);
 
 	list_for_each_entry(uuid, &hdev->uuids, list)
 		print_bt_uuid(f, uuid->uuid);
 
-	hci_dev_unlock_bh(hdev);
+	hci_dev_unlock(hdev);
 
 	return 0;
 }
@@ -507,11 +507,11 @@
 {
 	struct hci_dev *hdev = data;
 
-	hci_dev_lock_bh(hdev);
+	hci_dev_lock(hdev);
 
 	hdev->auto_accept_delay = val;
 
-	hci_dev_unlock_bh(hdev);
+	hci_dev_unlock(hdev);
 
 	return 0;
 }
@@ -520,11 +520,11 @@
 {
 	struct hci_dev *hdev = data;
 
-	hci_dev_lock_bh(hdev);
+	hci_dev_lock(hdev);
 
 	*val = hdev->auto_accept_delay;
 
-	hci_dev_unlock_bh(hdev);
+	hci_dev_unlock(hdev);
 
 	return 0;
 }