connector: make callback argument type explicit

The connector documentation states that the argument to the callback
function is always a pointer to a struct cn_msg, but rather than encode it
in the API itself, it uses a void pointer everywhere.  This doesn't make
much sense to encode the pointer in documentation as it prevents proper C
type checking from occurring and can easily allow people to use the wrong
pointer type.  So convert the argument type to an explicit struct cn_msg
pointer.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 3 deletions

diff --git a/Documentation/connector/cn_test.c b/Documentation/connector/cn_test.c
index f688eba87704..50d5ce4899c8 100644
--- a/Documentation/connector/cn_test.c
+++ b/Documentation/connector/cn_test.c
@@ -32,10 +32,8 @@ static char cn_test_name[] = "cn_test";
 static struct sock *nls;
 static struct timer_list cn_test_timer;
 
-void cn_test_callback(void *data)
+void cn_test_callback(struct cn_msg *msg)
 {
-        struct cn_msg *msg = (struct cn_msg *)data;
-
         printk("%s: %lu: idx=%x, val=%x, seq=%u, ack=%u, len=%d: %s.\n",
                __func__, jiffies, msg->id.idx, msg->id.val,
                msg->seq, msg->ack, msg->len, (char *)msg->data);