nfc: pn533: Constify pn533_phy_ops

Neither the driver or the core modifies the pn533_phy_ops struct, so
make them const to allow the compiler to put the static structs in
read-only memory.

Signed-off-by: Rikard Falkeborn <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/nfc/pn533/i2c.c

···
 	return IRQ_HANDLED;
 }
 
-static struct pn533_phy_ops i2c_phy_ops = {
+static const struct pn533_phy_ops i2c_phy_ops = {
 	.send_frame = pn533_i2c_send_frame,
 	.send_ack = pn533_i2c_send_ack,
 	.abort_cmd = pn533_i2c_abort_cmd,

drivers/nfc/pn533/pn533.c

···
 struct pn533 *pn53x_common_init(u32 device_type,
 				enum pn533_protocol_type protocol_type,
 				void *phy,
-				struct pn533_phy_ops *phy_ops,
+				const struct pn533_phy_ops *phy_ops,
 				struct pn533_frame_ops *fops,
 				struct device *dev)
 {

drivers/nfc/pn533/pn533.h

···
 
 	struct device *dev;
 	void *phy;
-	struct pn533_phy_ops *phy_ops;
+	const struct pn533_phy_ops *phy_ops;
 };
 
 typedef int (*pn533_send_async_complete_t) (struct pn533 *dev, void *arg,
···
 struct pn533 *pn53x_common_init(u32 device_type,
 				enum pn533_protocol_type protocol_type,
 				void *phy,
-				struct pn533_phy_ops *phy_ops,
+				const struct pn533_phy_ops *phy_ops,
 				struct pn533_frame_ops *fops,
 				struct device *dev);
 

drivers/nfc/pn533/uart.c

···
 	return 0;
 }
 
-static struct pn533_phy_ops uart_phy_ops = {
+static const struct pn533_phy_ops uart_phy_ops = {
 	.send_frame = pn532_uart_send_frame,
 	.send_ack = pn532_uart_send_ack,
 	.abort_cmd = pn532_uart_abort_cmd,

drivers/nfc/pn533/usb.c

···
 	}
 }
 
-static struct pn533_phy_ops usb_phy_ops = {
+static const struct pn533_phy_ops usb_phy_ops = {
 	.send_frame = pn533_usb_send_frame,
 	.send_ack = pn533_usb_send_ack,
 	.abort_cmd = pn533_usb_abort_cmd,