Bluetooth: Prefer sizeof(*ptr) when allocating memory

It's safer practice to use sizeof(*ptr) instead of sizeof(ptr_type) when
allocating memory in case the type changes. This also fixes the
following style of warnings from static analyzers:

CHECK: Prefer kzalloc(sizeof(*ie)...) over kzalloc(sizeof(struct inquiry_entry)...)
+ ie = kzalloc(sizeof(struct inquiry_entry), GFP_KERNEL);

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

net/bluetooth/hci_conn.c

···
 
 	BT_DBG("%s dst %pMR", hdev->name, dst);
 
-	conn = kzalloc(sizeof(struct hci_conn), GFP_KERNEL);
+	conn = kzalloc(sizeof(*conn), GFP_KERNEL);
 	if (!conn)
 		return NULL;
 
···
 
 	BT_DBG("%s hcon %p", hdev->name, conn);
 
-	chan = kzalloc(sizeof(struct hci_chan), GFP_KERNEL);
+	chan = kzalloc(sizeof(*chan), GFP_KERNEL);
 	if (!chan)
 		return NULL;
 

net/bluetooth/hci_core.c

···
 	}
 
 	/* Entry not in the cache. Add new one. */
-	ie = kzalloc(sizeof(struct inquiry_entry), GFP_KERNEL);
+	ie = kzalloc(sizeof(*ie), GFP_KERNEL);
 	if (!ie) {
 		flags |= MGMT_DEV_FOUND_CONFIRM_NAME;
 		goto done;
···
 	if (hci_bdaddr_list_lookup(list, bdaddr, type))
 		return -EEXIST;
 
-	entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL);
+	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
 	if (!entry)
 		return -ENOMEM;
 
···
 {
 	struct hci_dev *hdev;
 
-	hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL);
+	hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
 	if (!hdev)
 		return NULL;
 

net/bluetooth/l2cap_core.c

···
 	if (!hchan)
 		return NULL;
 
-	conn = kzalloc(sizeof(struct l2cap_conn), GFP_KERNEL);
+	conn = kzalloc(sizeof(*conn), GFP_KERNEL);
 	if (!conn) {
 		hci_chan_del(hchan);
 		return NULL;