mac802154: declare struct ieee802154_ops as const

The ieee802154_ops structure should be never changed during runtime.
This patch declare this structure as const to avoid a runtime change.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Cc: Alan Ott <alan@signal11.us>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

drivers/net/ieee802154/at86rf230.c

@@ -1214,7 +1214,7 @@ at86rf230_set_frame_retries(struct ieee802154_hw *hw, s8 retries)
 	return rc;
 }
 
-static struct ieee802154_ops at86rf230_ops = {
+static const struct ieee802154_ops at86rf230_ops = {
 	.owner = THIS_MODULE,
 	.xmit_async = at86rf230_xmit,
 	.ed = at86rf230_ed,

drivers/net/ieee802154/cc2520.c

@@ -631,7 +631,7 @@ cc2520_filter(struct ieee802154_hw *hw,
 	return 0;
 }
 
-static struct ieee802154_ops cc2520_ops = {
+static const struct ieee802154_ops cc2520_ops = {
 	.owner = THIS_MODULE,
 	.start = cc2520_start,
 	.stop = cc2520_stop,

drivers/net/ieee802154/fakelb.c

@@ -129,7 +129,7 @@ fakelb_hw_stop(struct ieee802154_hw *hw) {
 	spin_unlock(&priv->lock);
 }
 
-static struct ieee802154_ops fakelb_ops = {
+static const struct ieee802154_ops fakelb_ops = {
 	.owner = THIS_MODULE,
 	.xmit_sync = fakelb_hw_xmit,
 	.ed = fakelb_hw_ed,

drivers/net/ieee802154/mrf24j40.c

@@ -579,7 +579,7 @@ out:
 	return ret;
 }
 
-static struct ieee802154_ops mrf24j40_ops = {
+static const struct ieee802154_ops mrf24j40_ops = {
 	.owner = THIS_MODULE,
 	.xmit_sync = mrf24j40_tx,
 	.ed = mrf24j40_ed,

include/net/mac802154.h

@@ -197,7 +197,7 @@ struct ieee802154_ops {
 
 /* Basic interface to register ieee802154 hwice */
 struct ieee802154_hw *
-ieee802154_alloc_hw(size_t priv_data_len, struct ieee802154_ops *ops);
+ieee802154_alloc_hw(size_t priv_data_len, const struct ieee802154_ops *ops);
 void ieee802154_free_hw(struct ieee802154_hw *hw);
 int ieee802154_register_hw(struct ieee802154_hw *hw);
 void ieee802154_unregister_hw(struct ieee802154_hw *hw);

net/mac802154/ieee802154_i.h

@@ -28,7 +28,7 @@
 /* mac802154 device private data */
 struct ieee802154_local {
 	struct ieee802154_hw hw;
-	struct ieee802154_ops *ops;
+	const struct ieee802154_ops *ops;
 
 	/* ieee802154 phy */
 	struct wpan_phy *phy;

net/mac802154/main.c

@@ -187,7 +187,7 @@ static void ieee802154_tasklet_handler(unsigned long data)
 }
 
 struct ieee802154_hw *
-ieee802154_alloc_hw(size_t priv_data_len, struct ieee802154_ops *ops)
+ieee802154_alloc_hw(size_t priv_data_len, const struct ieee802154_ops *ops)
 {
 	struct wpan_phy *phy;
 	struct ieee802154_local *local;