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authorMike Frysinger <vapier@gentoo.org>2009-07-17 10:13:21 -0700
committerDavid S. Miller <davem@davemloft.net>2009-07-17 10:13:21 -0700
commit0741241c6b80bfd58417e95de984d60c9e9ef2a0 (patch)
tree9fa70e5e918e0735c531988f64b92cb5655baf28
parente36aa25a533962b08402530e8443ac804a454e27 (diff)
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>
-rw-r--r--Documentation/connector/cn_test.c4
-rw-r--r--drivers/connector/cn_proc.c3
-rw-r--r--drivers/connector/cn_queue.c7
-rw-r--r--drivers/connector/connector.c6
-rw-r--r--drivers/staging/dst/dcore.c3
-rw-r--r--drivers/video/uvesafb.c3
-rw-r--r--drivers/w1/w1_netlink.c3
-rw-r--r--include/linux/connector.h6
8 files changed, 16 insertions, 19 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);
diff --git a/drivers/connector/cn_proc.c b/drivers/connector/cn_proc.c
index c5afc98e2675..85e5dc0431fe 100644
--- a/drivers/connector/cn_proc.c
+++ b/drivers/connector/cn_proc.c
@@ -202,9 +202,8 @@ static void cn_proc_ack(int err, int rcvd_seq, int rcvd_ack)
* cn_proc_mcast_ctl
* @data: message sent from userspace via the connector
*/
-static void cn_proc_mcast_ctl(void *data)
+static void cn_proc_mcast_ctl(struct cn_msg *msg)
{
- struct cn_msg *msg = data;
enum proc_cn_mcast_op *mc_op = NULL;
int err = 0;
diff --git a/drivers/connector/cn_queue.c b/drivers/connector/cn_queue.c
index c769ef269fb5..d478aefcd3be 100644
--- a/drivers/connector/cn_queue.c
+++ b/drivers/connector/cn_queue.c
@@ -87,7 +87,9 @@ void cn_queue_wrapper(struct work_struct *work)
kfree(d->free);
}
-static struct cn_callback_entry *cn_queue_alloc_callback_entry(char *name, struct cb_id *id, void (*callback)(void *))
+static struct cn_callback_entry *
+cn_queue_alloc_callback_entry(char *name, struct cb_id *id,
+ void (*callback)(struct cn_msg *))
{
struct cn_callback_entry *cbq;
@@ -120,7 +122,8 @@ int cn_cb_equal(struct cb_id *i1, struct cb_id *i2)
return ((i1->idx == i2->idx) && (i1->val == i2->val));
}
-int cn_queue_add_callback(struct cn_queue_dev *dev, char *name, struct cb_id *id, void (*callback)(void *))
+int cn_queue_add_callback(struct cn_queue_dev *dev, char *name, struct cb_id *id,
+ void (*callback)(struct cn_msg *))
{
struct cn_callback_entry *cbq, *__cbq;
int found = 0;
diff --git a/drivers/connector/connector.c b/drivers/connector/connector.c
index fd336c5a9057..3f45669f5d76 100644
--- a/drivers/connector/connector.c
+++ b/drivers/connector/connector.c
@@ -269,7 +269,8 @@ static void cn_notify(struct cb_id *id, u32 notify_event)
*
* May sleep.
*/
-int cn_add_callback(struct cb_id *id, char *name, void (*callback)(void *))
+int cn_add_callback(struct cb_id *id, char *name,
+ void (*callback)(struct cn_msg *))
{
int err;
struct cn_dev *dev = &cdev;
@@ -351,9 +352,8 @@ static int cn_ctl_msg_equals(struct cn_ctl_msg *m1, struct cn_ctl_msg *m2)
*
* Used for notification of a request's processing.
*/
-static void cn_callback(void *data)
+static void cn_callback(struct cn_msg *msg)
{
- struct cn_msg *msg = data;
struct cn_ctl_msg *ctl;
struct cn_ctl_entry *ent;
u32 size;
diff --git a/drivers/staging/dst/dcore.c b/drivers/staging/dst/dcore.c
index fad25b753042..84724187ec3e 100644
--- a/drivers/staging/dst/dcore.c
+++ b/drivers/staging/dst/dcore.c
@@ -846,10 +846,9 @@ static dst_command_func dst_commands[] = {
/*
* Configuration parser.
*/
-static void cn_dst_callback(void *data)
+static void cn_dst_callback(struct cn_msg *msg)
{
struct dst_ctl *ctl;
- struct cn_msg *msg = data;
int err;
struct dst_ctl_ack ack;
struct dst_node *n = NULL, *tmp;
diff --git a/drivers/video/uvesafb.c b/drivers/video/uvesafb.c
index ca5b4643a401..e98baf6916b8 100644
--- a/drivers/video/uvesafb.c
+++ b/drivers/video/uvesafb.c
@@ -67,9 +67,8 @@ static DEFINE_MUTEX(uvfb_lock);
* find the kernel part of the task struct, copy the registers and
* the buffer contents and then complete the task.
*/
-static void uvesafb_cn_callback(void *data)
+static void uvesafb_cn_callback(struct cn_msg *msg)
{
- struct cn_msg *msg = data;
struct uvesafb_task *utask;
struct uvesafb_ktask *task;
diff --git a/drivers/w1/w1_netlink.c b/drivers/w1/w1_netlink.c
index fdf72851c574..52ccb3d3a963 100644
--- a/drivers/w1/w1_netlink.c
+++ b/drivers/w1/w1_netlink.c
@@ -306,9 +306,8 @@ static int w1_netlink_send_error(struct cn_msg *rcmsg, struct w1_netlink_msg *rm
return error;
}
-static void w1_cn_callback(void *data)
+static void w1_cn_callback(struct cn_msg *msg)
{
- struct cn_msg *msg = data;
struct w1_netlink_msg *m = (struct w1_netlink_msg *)(msg + 1);
struct w1_netlink_cmd *cmd;
struct w1_slave *sl;
diff --git a/include/linux/connector.h b/include/linux/connector.h
index b68d27850d51..47ebf416f512 100644
--- a/include/linux/connector.h
+++ b/include/linux/connector.h
@@ -136,7 +136,7 @@ struct cn_callback_data {
void *ddata;
void *callback_priv;
- void (*callback) (void *);
+ void (*callback) (struct cn_msg *);
void *free;
};
@@ -167,11 +167,11 @@ struct cn_dev {
struct cn_queue_dev *cbdev;
};
-int cn_add_callback(struct cb_id *, char *, void (*callback) (void *));
+int cn_add_callback(struct cb_id *, char *, void (*callback) (struct cn_msg *));
void cn_del_callback(struct cb_id *);
int cn_netlink_send(struct cn_msg *, u32, gfp_t);
-int cn_queue_add_callback(struct cn_queue_dev *dev, char *name, struct cb_id *id, void (*callback)(void *));
+int cn_queue_add_callback(struct cn_queue_dev *dev, char *name, struct cb_id *id, void (*callback)(struct cn_msg *));
void cn_queue_del_callback(struct cn_queue_dev *dev, struct cb_id *id);
int queue_cn_work(struct cn_callback_entry *cbq, struct work_struct *work);

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