nfc: constify nfc_hci_ops

Neither the core nor the drivers modify the passed pointer to struct
nfc_hci_ops, so make it a pointer to const for correctness and safety.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/nfc/microread/microread.c

···
 	return r;
 }
 
-static struct nfc_hci_ops microread_hci_ops = {
+static const struct nfc_hci_ops microread_hci_ops = {
 	.open = microread_open,
 	.close = microread_close,
 	.hci_ready = microread_hci_ready,

drivers/nfc/pn544/pn544.c

···
 	}
 }
 
-static struct nfc_hci_ops pn544_hci_ops = {
+static const struct nfc_hci_ops pn544_hci_ops = {
 	.open = pn544_hci_open,
 	.close = pn544_hci_close,
 	.hci_ready = pn544_hci_ready,

drivers/nfc/st21nfca/core.c

···
 	}
 }
 
-static struct nfc_hci_ops st21nfca_hci_ops = {
+static const struct nfc_hci_ops st21nfca_hci_ops = {
 	.open = st21nfca_hci_open,
 	.close = st21nfca_hci_close,
 	.load_session = st21nfca_hci_load_session,

include/net/nfc/hci.h

···
 
 	struct sk_buff_head msg_rx_queue;
 
-	struct nfc_hci_ops *ops;
+	const struct nfc_hci_ops *ops;
 
 	struct nfc_llc *llc;
 
···
 };
 
 /* hci device allocation */
-struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops,
+struct nfc_hci_dev *nfc_hci_allocate_device(const struct nfc_hci_ops *ops,
 					    struct nfc_hci_init_data *init_data,
 					    unsigned long quirks,
 					    u32 protocols,

net/nfc/hci/core.c

···
 	.se_io = hci_se_io,
 };
 
-struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops,
+struct nfc_hci_dev *nfc_hci_allocate_device(const struct nfc_hci_ops *ops,
 					    struct nfc_hci_init_data *init_data,
 					    unsigned long quirks,
 					    u32 protocols,