[BLUETOOTH]: Make hidp_setup_input() return int

This patch:
- makes hidp_setup_input() return int to indicate errors;
- checks its return value to handle errors.

And this time it is against -rc7-mm1 tree.

Thanks to roel and Marcel Holtmann for comments.

Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 4 deletions

diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index 64d89ca28847..ff5784b440d7 100644
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -625,7 +625,7 @@ static struct device *hidp_get_device(struct hidp_session *session)
         return conn ? &conn->dev : NULL;
 }
 
-static inline void hidp_setup_input(struct hidp_session *session, struct hidp_connadd_req *req)
+static inline int hidp_setup_input(struct hidp_session *session, struct hidp_connadd_req *req)
 {
         struct input_dev *input = session->input;
         int i;
@@ -667,7 +667,7 @@ static inline void hidp_setup_input(struct hidp_session *session, struct hidp_co
 
         input->event = hidp_input_event;
 
-        input_register_device(input);
+        return input_register_device(input);
 }
 
 static int hidp_open(struct hid_device *hid)
@@ -820,8 +820,11 @@ int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock,
         session->flags   = req->flags & (1 << HIDP_BLUETOOTH_VENDOR_ID);
         session->idle_to = req->idle_to;
 
-        if (session->input)
-                hidp_setup_input(session, req);
+        if (session->input) {
+                err = hidp_setup_input(session, req);
+                if (err < 0)
+                        goto failed;
+        }
 
         if (session->hid)
                 hidp_setup_hid(session, req);