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can: make struct proto const

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can_ioctl is the only reason for struct proto to be non-const.
script/check-patch.pl suggests struct proto be const.

Setting the reference to the common can_ioctl() in all CAN protocols directly
removes the need to make the struct proto writable in af_can.c

Signed-off-by: Kurt Van Dijck <[email protected]>
Signed-off-by: Oliver Hartkopp <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Oliver Hartkopp 2011-03-22 08:27:25 +00:00 • committed by David S. Miller
commit 53914b6799
4 changed files with 12 additions and 14 deletions
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9
include/linux/can/core.h
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@ -36,10 +36,10 @@
* @prot: pointer to struct proto structure.
*/
struct can_proto {
int type;
int protocol;
struct proto_ops *ops;
struct proto *prot;
int type;
int protocol;
const struct proto_ops *ops;
struct proto *prot;
};
/* function prototypes for the CAN networklayer core (af_can.c) */
@ -58,5 +58,6 @@ extern void can_rx_unregister(struct net_device *dev, canid_t can_id,
void *data);
extern int can_send(struct sk_buff *skb, int loop);
extern int can_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
#endif /* CAN_CORE_H */