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authorOliver Hartkopp <socketcan@hartkopp.net>2011-03-22 08:27:25 +0000
committerDavid S. Miller <davem@davemloft.net>2011-03-27 23:34:59 -0700
commit53914b67993c724cec585863755c9ebc8446e83b (patch)
tree851d031dd41a74c7e03436ca7c98455fee1c598e /net/can/af_can.c
parent3b261ade4224852ed841ecfd13876db812846e96 (diff)
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can: make struct proto const
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 <kurt.van.dijck@eia.be> Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/can/af_can.c')
-rw-r--r--net/can/af_can.c9
1 files changed, 3 insertions, 6 deletions
diff --git a/net/can/af_can.c b/net/can/af_can.c
index 702be5a..733d66f 100644
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -95,7 +95,7 @@ struct s_pstats can_pstats; /* receive list statistics */
* af_can socket functions
*/
-static int can_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+int can_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
struct sock *sk = sock->sk;
@@ -108,6 +108,7 @@ static int can_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
return -ENOIOCTLCMD;
}
}
+EXPORT_SYMBOL(can_ioctl);
static void can_sock_destruct(struct sock *sk)
{
@@ -698,13 +699,9 @@ int can_proto_register(struct can_proto *cp)
printk(KERN_ERR "can: protocol %d already registered\n",
proto);
err = -EBUSY;
- } else {
+ } else
proto_tab[proto] = cp;
- /* use generic ioctl function if not defined by module */
- if (!cp->ops->ioctl)
- cp->ops->ioctl = can_ioctl;
- }
spin_unlock(&proto_tab_lock);
if (err < 0)