peci: Constify struct peci_controller_ops

As with most ops structs, we never modify it at runtime, and keeping
function pointers in read-only memory is generally a good thing
security-wise.

Signed-off-by: Zev Weiss <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Reviewed-by: Iwona Winiarska <[e-mail]>
Signed-off-by: Iwona Winiarska <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/peci/controller/peci-aspeed.c

···
 				      ASPEED_PECI_CMD_TIMEOUT_MS_DEFAULT, &priv->cmd_timeout_ms);
 }
 
-static struct peci_controller_ops aspeed_ops = {
+static const struct peci_controller_ops aspeed_ops = {
 	.xfer = aspeed_peci_xfer,
 };
 

drivers/peci/core.c

···
 }
 
 static struct peci_controller *peci_controller_alloc(struct device *dev,
-						     struct peci_controller_ops *ops)
+						     const struct peci_controller_ops *ops)
 {
 	struct peci_controller *controller;
 	int ret;
···
  * Return: Pointer to the newly allocated controller or ERR_PTR() in case of failure.
  */
 struct peci_controller *devm_peci_controller_add(struct device *dev,
-						 struct peci_controller_ops *ops)
+						 const struct peci_controller_ops *ops)
 {
 	struct peci_controller *controller;
 	int ret;

include/linux/peci.h

···
  */
 struct peci_controller {
 	struct device dev;
-	struct peci_controller_ops *ops;
+	const struct peci_controller_ops *ops;
 	struct mutex bus_lock; /* held for the duration of xfer */
 	u8 id;
 };
 
 struct peci_controller *devm_peci_controller_add(struct device *parent,
-						 struct peci_controller_ops *ops);
+						 const struct peci_controller_ops *ops);
 
 static inline struct peci_controller *to_peci_controller(void *d)
 {