From: Johan Hedberg <johan.hedberg@xxxxxxxxx>
It's natural to have *_get() functions that increment the reference
count of an object to return the object type itself. This way it's
simple to make a copy of the object pointer and increase the reference
count in a single step. This patch updates two such get() functions,
namely hci_conn_get() and l2cap_conn_get(), and updates the users to
take advantage of the new API.
Signed-off-by: Johan Hedberg <johan.hedberg@xxxxxxxxx>
---
include/net/bluetooth/hci_core.h | 3 ++-
include/net/bluetooth/l2cap.h | 2 +-
net/bluetooth/hidp/core.c | 10 ++++------
net/bluetooth/l2cap_core.c | 6 +++---
4 files changed, 10 insertions(+), 11 deletions(-)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index b0ded1333865..aa75eee8ad7f 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -756,9 +756,10 @@ void hci_le_conn_failed(struct hci_conn *conn, u8 status);
* _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
*/
-static inline void hci_conn_get(struct hci_conn *conn)
+static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
{
get_device(&conn->dev);
+ return conn;
}
static inline void hci_conn_put(struct hci_conn *conn)
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index 1558eccb19db..8f1652ed3326 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -948,7 +948,7 @@ void l2cap_logical_cfm(struct l2cap_chan *chan, struct hci_chan *hchan,
void __l2cap_physical_cfm(struct l2cap_chan *chan, int result);
void l2cap_conn_shutdown(struct l2cap_conn *conn, int err);
-void l2cap_conn_get(struct l2cap_conn *conn);
+struct l2cap_conn *l2cap_conn_get(struct l2cap_conn *conn);
void l2cap_conn_put(struct l2cap_conn *conn);
int l2cap_register_user(struct l2cap_conn *conn, struct l2cap_user *user);
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index 6c7ecf116e74..1b7d605706aa 100644
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -915,7 +915,7 @@ static int hidp_session_new(struct hidp_session **out, const bdaddr_t *bdaddr,
/* connection management */
bacpy(&session->bdaddr, bdaddr);
- session->conn = conn;
+ session->conn = l2cap_conn_get(conn);
session->user.probe = hidp_session_probe;
session->user.remove = hidp_session_remove;
session->ctrl_sock = ctrl_sock;
@@ -941,13 +941,13 @@ static int hidp_session_new(struct hidp_session **out, const bdaddr_t *bdaddr,
if (ret)
goto err_free;
- l2cap_conn_get(session->conn);
get_file(session->intr_sock->file);
get_file(session->ctrl_sock->file);
*out = session;
return 0;
err_free:
+ l2cap_conn_put(session->conn);
kfree(session);
return ret;
}
@@ -1327,10 +1327,8 @@ int hidp_connection_add(struct hidp_connadd_req *req,
conn = NULL;
l2cap_chan_lock(chan);
- if (chan->conn) {
- l2cap_conn_get(chan->conn);
- conn = chan->conn;
- }
+ if (chan->conn)
+ conn = l2cap_conn_get(chan->conn);
l2cap_chan_unlock(chan);
if (!conn)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index a6559225bb50..cb36169ef300 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -1695,9 +1695,10 @@ static void l2cap_conn_free(struct kref *ref)
kfree(conn);
}
-void l2cap_conn_get(struct l2cap_conn *conn)
+struct l2cap_conn *l2cap_conn_get(struct l2cap_conn *conn)
{
kref_get(&conn->ref);
+ return conn;
}
EXPORT_SYMBOL(l2cap_conn_get);
@@ -6908,8 +6909,7 @@ static struct l2cap_conn *l2cap_conn_add(struct hci_conn *hcon)
kref_init(&conn->ref);
hcon->l2cap_data = conn;
- conn->hcon = hcon;
- hci_conn_get(conn->hcon);
+ conn->hcon = hci_conn_get(hcon);
conn->hchan = hchan;
BT_DBG("hcon %p conn %p hchan %p", hcon, conn, hchan);
--
1.9.3
--
To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
