pcmcia: cs: kill thread_wait

There is not reason to have a waitqueue if it's always the same
thread that is waiting for it.  Just use wake_up_process instead.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Small modification: Also remove unused variable.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c
index 29276bd..6bb1bb5 100644 (file)
--- a/drivers/pcmcia/cs.c
+++ b/drivers/pcmcia/cs.c
@@ -238,7 +238,6 @@ int pcmcia_register_socket(struct pcmcia_socket *socket)
 
        init_completion(&socket->socket_released);
        init_completion(&socket->thread_done);
-       init_waitqueue_head(&socket->thread_wait);
        mutex_init(&socket->skt_mutex);
        spin_lock_init(&socket->thread_lock);
 
@@ -278,10 +277,9 @@ void pcmcia_unregister_socket(struct pcmcia_socket *socket)
 
        cs_dbg(socket, 0, "pcmcia_unregister_socket(0x%p)\n", socket->ops);
 
-       if (socket->thread) {
-               wake_up(&socket->thread_wait);
+       if (socket->thread)
                kthread_stop(socket->thread);
-       }
+
        release_cis_mem(socket);
 
        /* remove from our own list */
@@ -635,7 +633,6 @@ static void socket_detect_change(struct pcmcia_socket *skt)
 static int pccardd(void *__skt)
 {
        struct pcmcia_socket *skt = __skt;
-       DECLARE_WAITQUEUE(wait, current);
        int ret;
 
        skt->thread = current;
@@ -656,7 +653,6 @@ static int pccardd(void *__skt)
        if (ret)
                dev_warn(&skt->dev, "err %d adding socket attributes\n", ret);
 
-       add_wait_queue(&skt->thread_wait, &wait);
        complete(&skt->thread_done);
 
        set_freezable();
@@ -694,8 +690,6 @@ static int pccardd(void *__skt)
        /* make sure we are running before we exit */
        set_current_state(TASK_RUNNING);
 
-       remove_wait_queue(&skt->thread_wait, &wait);
-
        /* remove from the device core */
        pccard_sysfs_remove_socket(&skt->dev);
        device_unregister(&skt->dev);
@@ -716,7 +710,7 @@ void pcmcia_parse_events(struct pcmcia_socket *s, u_int events)
                s->thread_events |= events;
                spin_unlock_irqrestore(&s->thread_lock, flags);
 
-               wake_up(&s->thread_wait);
+               wake_up_process(s->thread);
        }
 } /* pcmcia_parse_events */
 EXPORT_SYMBOL(pcmcia_parse_events);

diff --git a/include/pcmcia/ss.h b/include/pcmcia/ss.h
index f95dca0..2edc7fa 100644 (file)
--- a/include/pcmcia/ss.h
+++ b/include/pcmcia/ss.h
@@ -245,7 +245,6 @@ struct pcmcia_socket {
 
        struct task_struct              *thread;
        struct completion               thread_done;
-       wait_queue_head_t               thread_wait;
        spinlock_t                      thread_lock;    /* protects thread_events */
        unsigned int                    thread_events;