Bluetooth: Use kthread API in hidp
kernel_thread() is a low-level implementation detail and
EXPORT_SYMBOL(kernel_thread) is scheduled for removal.
Use the <linux/kthread.h> API instead.
Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index a1472b7..ae6ebc6 100644
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -37,6 +37,7 @@
#include <linux/init.h>
#include <linux/wait.h>
#include <linux/mutex.h>
+#include <linux/kthread.h>
#include <net/sock.h>
#include <linux/input.h>
@@ -463,8 +464,7 @@
{
struct hidp_session *session = (struct hidp_session *) arg;
- atomic_inc(&session->terminate);
- hidp_schedule(session);
+ kthread_stop(session->task);
}
static void hidp_set_timer(struct hidp_session *session)
@@ -535,9 +535,7 @@
skb_queue_purge(&session->ctrl_transmit);
skb_queue_purge(&session->intr_transmit);
- /* Kill session thread */
- atomic_inc(&session->terminate);
- hidp_schedule(session);
+ kthread_stop(session->task);
}
}
@@ -696,22 +694,10 @@
struct sock *ctrl_sk = session->ctrl_sock->sk;
struct sock *intr_sk = session->intr_sock->sk;
struct sk_buff *skb;
- int vendor = 0x0000, product = 0x0000;
wait_queue_t ctrl_wait, intr_wait;
BT_DBG("session %p", session);
- if (session->input) {
- vendor = session->input->id.vendor;
- product = session->input->id.product;
- }
-
- if (session->hid) {
- vendor = session->hid->vendor;
- product = session->hid->product;
- }
-
- daemonize("khidpd_%04x%04x", vendor, product);
set_user_nice(current, -15);
init_waitqueue_entry(&ctrl_wait, current);
@@ -720,7 +706,7 @@
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)) {
+ while (!kthread_should_stop()) {
set_current_state(TASK_INTERRUPTIBLE);
if (ctrl_sk->sk_state != BT_CONNECTED ||
@@ -968,6 +954,7 @@
int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, struct socket *intr_sock)
{
struct hidp_session *session, *s;
+ int vendor, product;
int err;
BT_DBG("");
@@ -1029,9 +1016,24 @@
hidp_set_timer(session);
- err = kernel_thread(hidp_session, session, CLONE_KERNEL);
- if (err < 0)
+ if (session->hid) {
+ vendor = session->hid->vendor;
+ product = session->hid->product;
+ } else if (session->input) {
+ vendor = session->input->id.vendor;
+ product = session->input->id.product;
+ } else {
+ vendor = 0x0000;
+ product = 0x0000;
+ }
+
+ session->task = kthread_run(hidp_session, session, "khidpd_%04x%04x",
+ vendor, product);
+ if (IS_ERR(session->task)) {
+ err = PTR_ERR(session->task);
goto unlink;
+ }
+
while (session->waiting_for_startup) {
wait_event_interruptible(session->startup_queue,
!session->waiting_for_startup);
@@ -1056,8 +1058,7 @@
err_add_device:
hid_destroy_device(session->hid);
session->hid = NULL;
- atomic_inc(&session->terminate);
- hidp_schedule(session);
+ kthread_stop(session->task);
unlink:
hidp_del_timer(session);
@@ -1108,13 +1109,7 @@
skb_queue_purge(&session->ctrl_transmit);
skb_queue_purge(&session->intr_transmit);
- /* Wakeup user-space polling for socket errors */
- session->intr_sock->sk->sk_err = EUNATCH;
- session->ctrl_sock->sk->sk_err = EUNATCH;
-
- /* Kill session thread */
- atomic_inc(&session->terminate);
- hidp_schedule(session);
+ kthread_stop(session->task);
}
} else
err = -ENOENT;
diff --git a/net/bluetooth/hidp/hidp.h b/net/bluetooth/hidp/hidp.h
index b412e71..12822cd 100644
--- a/net/bluetooth/hidp/hidp.h
+++ b/net/bluetooth/hidp/hidp.h
@@ -142,7 +142,7 @@
uint ctrl_mtu;
uint intr_mtu;
- atomic_t terminate;
+ struct task_struct *task;
unsigned char keys[8];
unsigned char leds;