diff options
| -rw-r--r-- | net/bluetooth/hidp/core.c | 28 | ||||
| -rw-r--r-- | net/bluetooth/hidp/hidp.h | 3 |
2 files changed, 23 insertions, 8 deletions
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c index 29544c2..67cc4bc 100644 --- a/net/bluetooth/hidp/core.c +++ b/net/bluetooth/hidp/core.c @@ -563,6 +563,8 @@ static int hidp_session(void *arg) init_waitqueue_entry(&intr_wait, current); add_wait_queue(sk_sleep(ctrl_sk), &ctrl_wait); add_wait_queue(sk_sleep(intr_sk), &intr_wait); + session->waiting_for_startup = 0; + wake_up_interruptible(&session->startup_queue); while (!atomic_read(&session->terminate)) { set_current_state(TASK_INTERRUPTIBLE); @@ -754,6 +756,8 @@ static struct hid_ll_driver hidp_hid_driver = { .hidinput_input_event = hidp_hidinput_event, }; +/* This function sets up the hid device. It does not add it + to the HID system. That is done in hidp_add_connection(). */ static int hidp_setup_hid(struct hidp_session *session, struct hidp_connadd_req *req) { @@ -795,16 +799,8 @@ static int hidp_setup_hid(struct hidp_session *session, hid->hid_output_raw_report = hidp_output_raw_report; - err = hid_add_device(hid); - if (err < 0) - goto failed; - return 0; -failed: - hid_destroy_device(hid); - session->hid = NULL; - fault: kfree(session->rd_data); session->rd_data = NULL; @@ -853,6 +849,8 @@ int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, skb_queue_head_init(&session->ctrl_transmit); skb_queue_head_init(&session->intr_transmit); + init_waitqueue_head(&session->startup_queue); + session->waiting_for_startup = 1; session->flags = req->flags & (1 << HIDP_BLUETOOTH_VENDOR_ID); session->idle_to = req->idle_to; @@ -875,6 +873,14 @@ int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, err = kernel_thread(hidp_session, session, CLONE_KERNEL); if (err < 0) goto unlink; + while (session->waiting_for_startup) { + wait_event_interruptible(session->startup_queue, + !session->waiting_for_startup); + } + + err = hid_add_device(session->hid); + if (err < 0) + goto err_add_device; if (session->input) { hidp_send_ctrl_message(session, @@ -888,6 +894,12 @@ int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, up_write(&hidp_session_sem); return 0; +err_add_device: + hid_destroy_device(session->hid); + session->hid = NULL; + atomic_inc(&session->terminate); + hidp_schedule(session); + unlink: hidp_del_timer(session); diff --git a/net/bluetooth/hidp/hidp.h b/net/bluetooth/hidp/hidp.h index 8d934a1..2cc35dc 100644 --- a/net/bluetooth/hidp/hidp.h +++ b/net/bluetooth/hidp/hidp.h @@ -157,6 +157,9 @@ struct hidp_session { /* Report descriptor */ __u8 *rd_data; uint rd_size; + + wait_queue_head_t startup_queue; + int waiting_for_startup; }; static inline void hidp_schedule(struct hidp_session *session) |