[PATCH 3.14 45/76] ALSA: timer: Code cleanup

From: Greg Kroah-Hartman
Date: Sun Feb 14 2016 - 18:24:12 EST


3.14-stable review patch. If anyone has any objections, please let me know.

------------------

From: Takashi Iwai <tiwai@xxxxxxx>

commit c3b1681375dc6e71d89a3ae00cc3ce9e775a8917 upstream.

This is a minor code cleanup without any functional changes:
- Kill keep_flag argument from _snd_timer_stop(), as all callers pass
only it false.
- Remove redundant NULL check in _snd_timer_stop().

Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
sound/core/timer.c | 28 +++++++++++-----------------
1 file changed, 11 insertions(+), 17 deletions(-)

--- a/sound/core/timer.c
+++ b/sound/core/timer.c
@@ -300,8 +300,7 @@ int snd_timer_open(struct snd_timer_inst
return 0;
}

-static int _snd_timer_stop(struct snd_timer_instance *timeri,
- int keep_flag, int event);
+static int _snd_timer_stop(struct snd_timer_instance *timeri, int event);

/*
* close a timer instance
@@ -343,7 +342,7 @@ int snd_timer_close(struct snd_timer_ins
spin_unlock_irq(&timer->lock);
mutex_lock(&register_mutex);
list_del(&timeri->open_list);
- if (timer && list_empty(&timer->open_list_head) &&
+ if (list_empty(&timer->open_list_head) &&
timer->hw.close)
timer->hw.close(timer);
/* remove slave links */
@@ -483,8 +482,7 @@ int snd_timer_start(struct snd_timer_ins
return result;
}

-static int _snd_timer_stop(struct snd_timer_instance * timeri,
- int keep_flag, int event)
+static int _snd_timer_stop(struct snd_timer_instance *timeri, int event)
{
struct snd_timer *timer;
unsigned long flags;
@@ -493,13 +491,11 @@ static int _snd_timer_stop(struct snd_ti
return -ENXIO;

if (timeri->flags & SNDRV_TIMER_IFLG_SLAVE) {
- if (!keep_flag) {
- spin_lock_irqsave(&slave_active_lock, flags);
- timeri->flags &= ~SNDRV_TIMER_IFLG_RUNNING;
- list_del_init(&timeri->ack_list);
- list_del_init(&timeri->active_list);
- spin_unlock_irqrestore(&slave_active_lock, flags);
- }
+ spin_lock_irqsave(&slave_active_lock, flags);
+ timeri->flags &= ~SNDRV_TIMER_IFLG_RUNNING;
+ list_del_init(&timeri->ack_list);
+ list_del_init(&timeri->active_list);
+ spin_unlock_irqrestore(&slave_active_lock, flags);
goto __end;
}
timer = timeri->timer;
@@ -520,9 +516,7 @@ static int _snd_timer_stop(struct snd_ti
}
}
}
- if (!keep_flag)
- timeri->flags &=
- ~(SNDRV_TIMER_IFLG_RUNNING | SNDRV_TIMER_IFLG_START);
+ timeri->flags &= ~(SNDRV_TIMER_IFLG_RUNNING | SNDRV_TIMER_IFLG_START);
spin_unlock_irqrestore(&timer->lock, flags);
__end:
if (event != SNDRV_TIMER_EVENT_RESOLUTION)
@@ -541,7 +535,7 @@ int snd_timer_stop(struct snd_timer_inst
unsigned long flags;
int err;

- err = _snd_timer_stop(timeri, 0, SNDRV_TIMER_EVENT_STOP);
+ err = _snd_timer_stop(timeri, SNDRV_TIMER_EVENT_STOP);
if (err < 0)
return err;
timer = timeri->timer;
@@ -585,7 +579,7 @@ int snd_timer_continue(struct snd_timer_
*/
int snd_timer_pause(struct snd_timer_instance * timeri)
{
- return _snd_timer_stop(timeri, 0, SNDRV_TIMER_EVENT_PAUSE);
+ return _snd_timer_stop(timeri, SNDRV_TIMER_EVENT_PAUSE);
}

/*