saner FASYNC handling on file close

[linux-2.6-omap-h63xx.git] / sound / core / timer.c

diff --git a/sound/core/timer.c b/sound/core/timer.c
index 0af337efc64e282367727e965bb36c090d0afd37..c584408c9f17d32dcace6b8684bfe02647a0f228 100644 (file)
--- a/sound/core/timer.c
+++ b/sound/core/timer.c
@@ -306,7 +306,8 @@ int snd_timer_close(struct snd_timer_instance *timeri)
        struct snd_timer *timer = NULL;
        struct snd_timer_instance *slave, *tmp;
 
-       snd_assert(timeri != NULL, return -ENXIO);
+       if (snd_BUG_ON(!timeri))
+               return -ENXIO;
 
        /* force to stop the timer */
        snd_timer_stop(timeri);
@@ -385,8 +386,9 @@ static void snd_timer_notify1(struct snd_timer_instance *ti, int event)
                do_posix_clock_monotonic_gettime(&tstamp);
        else
                getnstimeofday(&tstamp);
-       snd_assert(event >= SNDRV_TIMER_EVENT_START &&
-                  event <= SNDRV_TIMER_EVENT_PAUSE, return);
+       if (snd_BUG_ON(event < SNDRV_TIMER_EVENT_START ||
+                      event > SNDRV_TIMER_EVENT_PAUSE))
+               return;
        if (event == SNDRV_TIMER_EVENT_START ||
            event == SNDRV_TIMER_EVENT_CONTINUE)
                resolution = snd_timer_resolution(ti);
@@ -474,7 +476,8 @@ static int _snd_timer_stop(struct snd_timer_instance * timeri,
        struct snd_timer *timer;
        unsigned long flags;
 
-       snd_assert(timeri != NULL, return -ENXIO);
+       if (snd_BUG_ON(!timeri))
+               return -ENXIO;
 
        if (timeri->flags & SNDRV_TIMER_IFLG_SLAVE) {
                if (!keep_flag) {
@@ -758,9 +761,10 @@ int snd_timer_new(struct snd_card *card, char *id, struct snd_timer_id *tid,
                .dev_disconnect = snd_timer_dev_disconnect,
        };
 
-       snd_assert(tid != NULL, return -EINVAL);
-       snd_assert(rtimer != NULL, return -EINVAL);
-       *rtimer = NULL;
+       if (snd_BUG_ON(!tid))
+               return -EINVAL;
+       if (rtimer)
+               *rtimer = NULL;
        timer = kzalloc(sizeof(*timer), GFP_KERNEL);
        if (timer == NULL) {
                snd_printk(KERN_ERR "timer: cannot allocate\n");
@@ -788,13 +792,15 @@ int snd_timer_new(struct snd_card *card, char *id, struct snd_timer_id *tid,
                        return err;
                }
        }
-       *rtimer = timer;
+       if (rtimer)
+               *rtimer = timer;
        return 0;
 }
 
 static int snd_timer_free(struct snd_timer *timer)
 {
-       snd_assert(timer != NULL, return -ENXIO);
+       if (!timer)
+               return 0;
 
        mutex_lock(&register_mutex);
        if (! list_empty(&timer->open_list_head)) {
@@ -827,8 +833,8 @@ static int snd_timer_dev_register(struct snd_device *dev)
        struct snd_timer *timer = dev->device_data;
        struct snd_timer *timer1;
 
-       snd_assert(timer != NULL && timer->hw.start != NULL &&
-                  timer->hw.stop != NULL, return -ENXIO);
+       if (snd_BUG_ON(!timer || !timer->hw.start || !timer->hw.stop))
+               return -ENXIO;
        if (!(timer->hw.flags & SNDRV_TIMER_HW_SLAVE) &&
            !timer->hw.resolution && timer->hw.c_resolution == NULL)
                return -EINVAL;
@@ -879,8 +885,9 @@ void snd_timer_notify(struct snd_timer *timer, int event, struct timespec *tstam
 
        if (! (timer->hw.flags & SNDRV_TIMER_HW_SLAVE))
                return;
-       snd_assert(event >= SNDRV_TIMER_EVENT_MSTART &&
-                  event <= SNDRV_TIMER_EVENT_MRESUME, return);
+       if (snd_BUG_ON(event < SNDRV_TIMER_EVENT_MSTART ||
+                      event > SNDRV_TIMER_EVENT_MRESUME))
+               return;
        spin_lock_irqsave(&timer->lock, flags);
        if (event == SNDRV_TIMER_EVENT_MSTART ||
            event == SNDRV_TIMER_EVENT_MCONTINUE ||
@@ -1256,7 +1263,6 @@ static int snd_timer_user_release(struct inode *inode, struct file *file)
        if (file->private_data) {
                tu = file->private_data;
                file->private_data = NULL;
-               fasync_helper(-1, file, 0, &tu->fasync);
                if (tu->timeri)
                        snd_timer_close(tu->timeri);
                kfree(tu->queue);