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Bluetooth: Use kthread API in hidp

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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>
This commit is contained in:
Szymon Janc 2011-04-05 15:37:45 +02:00 committed by Gustavo F. Padovan
parent a88a9652d2
commit aabf6f897e
2 changed files with 25 additions and 30 deletions
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53
net/bluetooth/hidp/core.c
View File

@ -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 @@ static void hidp_idle_timeout(unsigned long arg)
{
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 @@ static void hidp_process_hid_control(struct hidp_session *session,
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 @@ static int hidp_session(void *arg)
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 @@ static int hidp_session(void *arg)
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 @@ fault:
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 @@ int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock,
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 @@ int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock,
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 @@ int hidp_del_connection(struct hidp_conndel_req *req)
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;

2
net/bluetooth/hidp/hidp.h
View File

@ -142,7 +142,7 @@ struct hidp_session {
uint ctrl_mtu;
uint intr_mtu;
atomic_t terminate;
struct task_struct *task;
unsigned char keys[8];
unsigned char leds;