@@ -75,9 +75,7 @@ void snd_seq_timer_delete(struct snd_seq_timer **tmr)
void snd_seq_timer_defaults(struct snd_seq_timer * tmr)
{
- unsigned long flags;
-
- spin_lock_irqsave(&tmr->lock, flags);
+ guard(spinlock_irqsave)(&tmr->lock);
/* setup defaults */
tmr->ppq = 96; /* 96 PPQ */
tmr->tempo = 500000; /* 120 BPM */
@@ -93,7 +91,6 @@ void snd_seq_timer_defaults(struct snd_seq_timer * tmr)
tmr->preferred_resolution = seq_default_timer_resolution;
tmr->skew = tmr->skew_base = SKEW_BASE;
- spin_unlock_irqrestore(&tmr->lock, flags);
}
static void seq_timer_reset(struct snd_seq_timer *tmr)
@@ -108,11 +105,8 @@ static void seq_timer_reset(struct snd_seq_timer *tmr)
void snd_seq_timer_reset(struct snd_seq_timer *tmr)
{
- unsigned long flags;
-
- spin_lock_irqsave(&tmr->lock, flags);
+ guard(spinlock_irqsave)(&tmr->lock);
seq_timer_reset(tmr);
- spin_unlock_irqrestore(&tmr->lock, flags);
}
@@ -121,7 +115,6 @@ static void snd_seq_timer_interrupt(struct snd_timer_instance *timeri,
unsigned long resolution,
unsigned long ticks)
{
- unsigned long flags;
struct snd_seq_queue *q = timeri->callback_data;
struct snd_seq_timer *tmr;
@@ -130,30 +123,28 @@ static void snd_seq_timer_interrupt(struct snd_timer_instance *timeri,
tmr = q->timer;
if (tmr == NULL)
return;
- spin_lock_irqsave(&tmr->lock, flags);
- if (!tmr->running) {
- spin_unlock_irqrestore(&tmr->lock, flags);
- return;
+
+ scoped_guard(spinlock_irqsave, &tmr->lock) {
+ if (!tmr->running)
+ return;
+
+ resolution *= ticks;
+ if (tmr->skew != tmr->skew_base) {
+ /* FIXME: assuming skew_base = 0x10000 */
+ resolution = (resolution >> 16) * tmr->skew +
+ (((resolution & 0xffff) * tmr->skew) >> 16);
+ }
+
+ /* update timer */
+ snd_seq_inc_time_nsec(&tmr->cur_time, resolution);
+
+ /* calculate current tick */
+ snd_seq_timer_update_tick(&tmr->tick, resolution);
+
+ /* register actual time of this timer update */
+ ktime_get_ts64(&tmr->last_update);
}
- resolution *= ticks;
- if (tmr->skew != tmr->skew_base) {
- /* FIXME: assuming skew_base = 0x10000 */
- resolution = (resolution >> 16) * tmr->skew +
- (((resolution & 0xffff) * tmr->skew) >> 16);
- }
-
- /* update timer */
- snd_seq_inc_time_nsec(&tmr->cur_time, resolution);
-
- /* calculate current tick */
- snd_seq_timer_update_tick(&tmr->tick, resolution);
-
- /* register actual time of this timer update */
- ktime_get_ts64(&tmr->last_update);
-
- spin_unlock_irqrestore(&tmr->lock, flags);
-
/* check queues and dispatch events */
snd_seq_check_queue(q, 1, 0);
}
@@ -161,18 +152,15 @@ static void snd_seq_timer_interrupt(struct snd_timer_instance *timeri,
/* set current tempo */
int snd_seq_timer_set_tempo(struct snd_seq_timer * tmr, int tempo)
{
- unsigned long flags;
-
if (snd_BUG_ON(!tmr))
return -EINVAL;
if (tempo <= 0)
return -EINVAL;
- spin_lock_irqsave(&tmr->lock, flags);
+ guard(spinlock_irqsave)(&tmr->lock);
if ((unsigned int)tempo != tmr->tempo) {
tmr->tempo = tempo;
snd_seq_timer_set_tick_resolution(tmr);
}
- spin_unlock_irqrestore(&tmr->lock, flags);
return 0;
}
@@ -180,17 +168,15 @@ int snd_seq_timer_set_tempo(struct snd_seq_timer * tmr, int tempo)
int snd_seq_timer_set_tempo_ppq(struct snd_seq_timer *tmr, int tempo, int ppq)
{
int changed;
- unsigned long flags;
if (snd_BUG_ON(!tmr))
return -EINVAL;
if (tempo <= 0 || ppq <= 0)
return -EINVAL;
- spin_lock_irqsave(&tmr->lock, flags);
+ guard(spinlock_irqsave)(&tmr->lock);
if (tmr->running && (ppq != tmr->ppq)) {
/* refuse to change ppq on running timers */
/* because it will upset the song position (ticks) */
- spin_unlock_irqrestore(&tmr->lock, flags);
pr_debug("ALSA: seq: cannot change ppq of a running timer\n");
return -EBUSY;
}
@@ -199,7 +185,6 @@ int snd_seq_timer_set_tempo_ppq(struct snd_seq_timer *tmr, int tempo, int ppq)
tmr->ppq = ppq;
if (changed)
snd_seq_timer_set_tick_resolution(tmr);
- spin_unlock_irqrestore(&tmr->lock, flags);
return 0;
}
@@ -207,15 +192,12 @@ int snd_seq_timer_set_tempo_ppq(struct snd_seq_timer *tmr, int tempo, int ppq)
int snd_seq_timer_set_position_tick(struct snd_seq_timer *tmr,
snd_seq_tick_time_t position)
{
- unsigned long flags;
-
if (snd_BUG_ON(!tmr))
return -EINVAL;
- spin_lock_irqsave(&tmr->lock, flags);
+ guard(spinlock_irqsave)(&tmr->lock);
tmr->tick.cur_tick = position;
tmr->tick.fraction = 0;
- spin_unlock_irqrestore(&tmr->lock, flags);
return 0;
}
@@ -223,15 +205,12 @@ int snd_seq_timer_set_position_tick(struct snd_seq_timer *tmr,
int snd_seq_timer_set_position_time(struct snd_seq_timer *tmr,
snd_seq_real_time_t position)
{
- unsigned long flags;
-
if (snd_BUG_ON(!tmr))
return -EINVAL;
snd_seq_sanity_real_time(&position);
- spin_lock_irqsave(&tmr->lock, flags);
+ guard(spinlock_irqsave)(&tmr->lock);
tmr->cur_time = position;
- spin_unlock_irqrestore(&tmr->lock, flags);
return 0;
}
@@ -239,8 +218,6 @@ int snd_seq_timer_set_position_time(struct snd_seq_timer *tmr,
int snd_seq_timer_set_skew(struct snd_seq_timer *tmr, unsigned int skew,
unsigned int base)
{
- unsigned long flags;
-
if (snd_BUG_ON(!tmr))
return -EINVAL;
@@ -249,9 +226,8 @@ int snd_seq_timer_set_skew(struct snd_seq_timer *tmr, unsigned int skew,
pr_debug("ALSA: seq: invalid skew base 0x%x\n", base);
return -EINVAL;
}
- spin_lock_irqsave(&tmr->lock, flags);
+ guard(spinlock_irqsave)(&tmr->lock);
tmr->skew = skew;
- spin_unlock_irqrestore(&tmr->lock, flags);
return 0;
}
@@ -296,12 +272,12 @@ int snd_seq_timer_open(struct snd_seq_queue *q)
snd_timer_instance_free(t);
return err;
}
- spin_lock_irq(&tmr->lock);
- if (tmr->timeri)
- err = -EBUSY;
- else
- tmr->timeri = t;
- spin_unlock_irq(&tmr->lock);
+ scoped_guard(spinlock_irq, &tmr->lock) {
+ if (tmr->timeri)
+ err = -EBUSY;
+ else
+ tmr->timeri = t;
+ }
if (err < 0) {
snd_timer_close(t);
snd_timer_instance_free(t);
@@ -318,10 +294,10 @@ int snd_seq_timer_close(struct snd_seq_queue *q)
tmr = q->timer;
if (snd_BUG_ON(!tmr))
return -EINVAL;
- spin_lock_irq(&tmr->lock);
- t = tmr->timeri;
- tmr->timeri = NULL;
- spin_unlock_irq(&tmr->lock);
+ scoped_guard(spinlock_irq, &tmr->lock) {
+ t = tmr->timeri;
+ tmr->timeri = NULL;
+ }
if (t) {
snd_timer_close(t);
snd_timer_instance_free(t);
@@ -342,13 +318,8 @@ static int seq_timer_stop(struct snd_seq_timer *tmr)
int snd_seq_timer_stop(struct snd_seq_timer *tmr)
{
- unsigned long flags;
- int err;
-
- spin_lock_irqsave(&tmr->lock, flags);
- err = seq_timer_stop(tmr);
- spin_unlock_irqrestore(&tmr->lock, flags);
- return err;
+ guard(spinlock_irqsave)(&tmr->lock);
+ return seq_timer_stop(tmr);
}
static int initialize_timer(struct snd_seq_timer *tmr)
@@ -398,13 +369,8 @@ static int seq_timer_start(struct snd_seq_timer *tmr)
int snd_seq_timer_start(struct snd_seq_timer *tmr)
{
- unsigned long flags;
- int err;
-
- spin_lock_irqsave(&tmr->lock, flags);
- err = seq_timer_start(tmr);
- spin_unlock_irqrestore(&tmr->lock, flags);
- return err;
+ guard(spinlock_irqsave)(&tmr->lock);
+ return seq_timer_start(tmr);
}
static int seq_timer_continue(struct snd_seq_timer *tmr)
@@ -426,13 +392,8 @@ static int seq_timer_continue(struct snd_seq_timer *tmr)
int snd_seq_timer_continue(struct snd_seq_timer *tmr)
{
- unsigned long flags;
- int err;
-
- spin_lock_irqsave(&tmr->lock, flags);
- err = seq_timer_continue(tmr);
- spin_unlock_irqrestore(&tmr->lock, flags);
- return err;
+ guard(spinlock_irqsave)(&tmr->lock);
+ return seq_timer_continue(tmr);
}
/* return current 'real' time. use timeofday() to get better granularity. */
@@ -440,9 +401,8 @@ snd_seq_real_time_t snd_seq_timer_get_cur_time(struct snd_seq_timer *tmr,
bool adjust_ktime)
{
snd_seq_real_time_t cur_time;
- unsigned long flags;
- spin_lock_irqsave(&tmr->lock, flags);
+ guard(spinlock_irqsave)(&tmr->lock);
cur_time = tmr->cur_time;
if (adjust_ktime && tmr->running) {
struct timespec64 tm;
@@ -453,7 +413,6 @@ snd_seq_real_time_t snd_seq_timer_get_cur_time(struct snd_seq_timer *tmr,
cur_time.tv_sec += tm.tv_sec;
snd_seq_sanity_real_time(&cur_time);
}
- spin_unlock_irqrestore(&tmr->lock, flags);
return cur_time;
}
@@ -461,13 +420,8 @@ snd_seq_real_time_t snd_seq_timer_get_cur_time(struct snd_seq_timer *tmr,
high PPQ values) */
snd_seq_tick_time_t snd_seq_timer_get_cur_tick(struct snd_seq_timer *tmr)
{
- snd_seq_tick_time_t cur_tick;
- unsigned long flags;
-
- spin_lock_irqsave(&tmr->lock, flags);
- cur_tick = tmr->tick.cur_tick;
- spin_unlock_irqrestore(&tmr->lock, flags);
- return cur_tick;
+ guard(spinlock_irqsave)(&tmr->lock);
+ return tmr->tick.cur_tick;
}
@@ -486,19 +440,18 @@ void snd_seq_info_timer_read(struct snd_info_entry *entry,
q = queueptr(idx);
if (q == NULL)
continue;
- mutex_lock(&q->timer_mutex);
- tmr = q->timer;
- if (!tmr)
- goto unlock;
- ti = tmr->timeri;
- if (!ti)
- goto unlock;
- snd_iprintf(buffer, "Timer for queue %i : %s\n", q->queue, ti->timer->name);
- resolution = snd_timer_resolution(ti) * tmr->ticks;
- snd_iprintf(buffer, " Period time : %lu.%09lu\n", resolution / 1000000000, resolution % 1000000000);
- snd_iprintf(buffer, " Skew : %u / %u\n", tmr->skew, tmr->skew_base);
-unlock:
- mutex_unlock(&q->timer_mutex);
+ scoped_guard(mutex, &q->timer_mutex) {
+ tmr = q->timer;
+ if (!tmr)
+ break;
+ ti = tmr->timeri;
+ if (!ti)
+ break;
+ snd_iprintf(buffer, "Timer for queue %i : %s\n", q->queue, ti->timer->name);
+ resolution = snd_timer_resolution(ti) * tmr->ticks;
+ snd_iprintf(buffer, " Period time : %lu.%09lu\n", resolution / 1000000000, resolution % 1000000000);
+ snd_iprintf(buffer, " Skew : %u / %u\n", tmr->skew, tmr->skew_base);
+ }
queuefree(q);
}
}
We can simplify the code gracefully with new guard() macro and co for automatic cleanup of locks. Only the code refactoring, and no functional changes. Signed-off-by: Takashi Iwai <tiwai@suse.de> --- sound/core/seq/seq_timer.c | 163 +++++++++++++------------------------ 1 file changed, 58 insertions(+), 105 deletions(-)