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[ALSA] alsa core: convert to list_for_each_entry*

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This patch converts most uses of list_for_each to list_for_each_entry all
across alsa. In some place apparently an item can be on a list with
different pointers so of course that isn't compatible with list_for_each, I
therefore didn't touch those places.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Johannes Berg
2006-10-05 16:02:22 +02:00
committed by Jaroslav Kysela
parent d595ee7e01
commit 9244b2c307
12 changed files with 102 additions and 214 deletions
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77
sound/core/timer.c
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@@ -130,11 +130,8 @@ static struct snd_timer_instance *snd_timer_instance_new(char *owner,
static struct snd_timer *snd_timer_find(struct snd_timer_id *tid)
{
struct snd_timer *timer = NULL;
struct list_head *p;
list_for_each(p, &snd_timer_list) {
timer = list_entry(p, struct snd_timer, device_list);
list_for_each_entry(timer, &snd_timer_list, device_list) {
if (timer->tmr_class != tid->dev_class)
continue;
if ((timer->tmr_class == SNDRV_TIMER_CLASS_CARD ||
@@ -184,13 +181,10 @@ static void snd_timer_check_slave(struct snd_timer_instance *slave)
{
struct snd_timer *timer;
struct snd_timer_instance *master;
struct list_head *p, *q;
/* FIXME: it's really dumb to look up all entries.. */
list_for_each(p, &snd_timer_list) {
timer = list_entry(p, struct snd_timer, device_list);
list_for_each(q, &timer->open_list_head) {
master = list_entry(q, struct snd_timer_instance, open_list);
list_for_each_entry(timer, &snd_timer_list, device_list) {
list_for_each_entry(master, &timer->open_list_head, open_list) {
if (slave->slave_class == master->slave_class &&
slave->slave_id == master->slave_id) {
list_del(&slave->open_list);
@@ -214,16 +208,13 @@ static void snd_timer_check_slave(struct snd_timer_instance *slave)
*/
static void snd_timer_check_master(struct snd_timer_instance *master)
{
struct snd_timer_instance *slave;
struct list_head *p, *n;
struct snd_timer_instance *slave, *tmp;
/* check all pending slaves */
list_for_each_safe(p, n, &snd_timer_slave_list) {
slave = list_entry(p, struct snd_timer_instance, open_list);
list_for_each_entry_safe(slave, tmp, &snd_timer_slave_list, open_list) {
if (slave->slave_class == master->slave_class &&
slave->slave_id == master->slave_id) {
list_del(p);
list_add_tail(p, &master->slave_list_head);
list_move_tail(&slave->open_list, &master->slave_list_head);
spin_lock_irq(&slave_active_lock);
slave->master = master;
slave->timer = master->timer;
@@ -317,8 +308,7 @@ static int _snd_timer_stop(struct snd_timer_instance *timeri,
int snd_timer_close(struct snd_timer_instance *timeri)
{
struct snd_timer *timer = NULL;
struct list_head *p, *n;
struct snd_timer_instance *slave;
struct snd_timer_instance *slave, *tmp;
snd_assert(timeri != NULL, return -ENXIO);
@@ -353,12 +343,11 @@ int snd_timer_close(struct snd_timer_instance *timeri)
timer->hw.close)
timer->hw.close(timer);
/* remove slave links */
list_for_each_safe(p, n, &timeri->slave_list_head) {
slave = list_entry(p, struct snd_timer_instance, open_list);
list_for_each_entry_safe(slave, tmp, &timeri->slave_list_head,
open_list) {
spin_lock_irq(&slave_active_lock);
_snd_timer_stop(slave, 1, SNDRV_TIMER_EVENT_RESOLUTION);
list_del(p);
list_add_tail(p, &snd_timer_slave_list);
list_move_tail(&slave->open_list, &snd_timer_slave_list);
slave->master = NULL;
slave->timer = NULL;
spin_unlock_irq(&slave_active_lock);
@@ -394,7 +383,6 @@ static void snd_timer_notify1(struct snd_timer_instance *ti, int event)
unsigned long flags;
unsigned long resolution = 0;
struct snd_timer_instance *ts;
struct list_head *n;
struct timespec tstamp;
getnstimeofday(&tstamp);
@@ -413,11 +401,9 @@ static void snd_timer_notify1(struct snd_timer_instance *ti, int event)
if (timer->hw.flags & SNDRV_TIMER_HW_SLAVE)
return;
spin_lock_irqsave(&timer->lock, flags);
list_for_each(n, &ti->slave_active_head) {
ts = list_entry(n, struct snd_timer_instance, active_list);
list_for_each_entry(ts, &ti->slave_active_head, active_list)
if (ts->ccallback)
ts->ccallback(ti, event + 100, &tstamp, resolution);
}
spin_unlock_irqrestore(&timer->lock, flags);
}
@@ -593,10 +579,8 @@ static void snd_timer_reschedule(struct snd_timer * timer, unsigned long ticks_l
{
struct snd_timer_instance *ti;
unsigned long ticks = ~0UL;
struct list_head *p;
list_for_each(p, &timer->active_list_head) {
ti = list_entry(p, struct snd_timer_instance, active_list);
list_for_each_entry(ti, &timer->active_list_head, active_list) {
if (ti->flags & SNDRV_TIMER_IFLG_START) {
ti->flags &= ~SNDRV_TIMER_IFLG_START;
ti->flags |= SNDRV_TIMER_IFLG_RUNNING;
@@ -661,9 +645,9 @@ static void snd_timer_tasklet(unsigned long arg)
*/
void snd_timer_interrupt(struct snd_timer * timer, unsigned long ticks_left)
{
struct snd_timer_instance *ti, *ts;
struct snd_timer_instance *ti, *ts, *tmp;
unsigned long resolution, ticks;
struct list_head *p, *q, *n, *ack_list_head;
struct list_head *p, *ack_list_head;
unsigned long flags;
int use_tasklet = 0;
@@ -679,12 +663,12 @@ void snd_timer_interrupt(struct snd_timer * timer, unsigned long ticks_left)
resolution = timer->hw.resolution;
/* loop for all active instances
* Here we cannot use list_for_each because the active_list of a
* Here we cannot use list_for_each_entry because the active_list of a
* processed instance is relinked to done_list_head before the callback
* is called.
*/
list_for_each_safe(p, n, &timer->active_list_head) {
ti = list_entry(p, struct snd_timer_instance, active_list);
list_for_each_entry_safe(ti, tmp, &timer->active_list_head,
active_list) {
if (!(ti->flags & SNDRV_TIMER_IFLG_RUNNING))
continue;
ti->pticks += ticks_left;
@@ -700,7 +684,7 @@ void snd_timer_interrupt(struct snd_timer * timer, unsigned long ticks_left)
} else {
ti->flags &= ~SNDRV_TIMER_IFLG_RUNNING;
if (--timer->running)
list_del(p);
list_del(&ti->active_list);
}
if ((timer->hw.flags & SNDRV_TIMER_HW_TASKLET) ||
(ti->flags & SNDRV_TIMER_IFLG_FAST))
@@ -709,8 +693,7 @@ void snd_timer_interrupt(struct snd_timer * timer, unsigned long ticks_left)
ack_list_head = &timer->sack_list_head;
if (list_empty(&ti->ack_list))
list_add_tail(&ti->ack_list, ack_list_head);
list_for_each(q, &ti->slave_active_head) {
ts = list_entry(q, struct snd_timer_instance, active_list);
list_for_each_entry(ts, &ti->slave_active_head, active_list) {
ts->pticks = ti->pticks;
ts->resolution = resolution;
if (list_empty(&ts->ack_list))
@@ -844,7 +827,6 @@ static int snd_timer_dev_register(struct snd_device *dev)
{
struct snd_timer *timer = dev->device_data;
struct snd_timer *timer1;
struct list_head *p;
snd_assert(timer != NULL && timer->hw.start != NULL &&
timer->hw.stop != NULL, return -ENXIO);
@@ -853,8 +835,7 @@ static int snd_timer_dev_register(struct snd_device *dev)
return -EINVAL;
mutex_lock(&register_mutex);
list_for_each(p, &snd_timer_list) {
timer1 = list_entry(p, struct snd_timer, device_list);
list_for_each_entry(timer1, &snd_timer_list, device_list) {
if (timer1->tmr_class > timer->tmr_class)
break;
if (timer1->tmr_class < timer->tmr_class)
@@ -877,7 +858,7 @@ static int snd_timer_dev_register(struct snd_device *dev)
mutex_unlock(&register_mutex);
return -EBUSY;
}
list_add_tail(&timer->device_list, p);
list_add_tail(&timer->device_list, &timer1->device_list);
mutex_unlock(&register_mutex);
return 0;
}
@@ -896,7 +877,6 @@ void snd_timer_notify(struct snd_timer *timer, int event, struct timespec *tstam
unsigned long flags;
unsigned long resolution = 0;
struct snd_timer_instance *ti, *ts;
struct list_head *p, *n;
if (! (timer->hw.flags & SNDRV_TIMER_HW_SLAVE))
return;
@@ -911,15 +891,12 @@ void snd_timer_notify(struct snd_timer *timer, int event, struct timespec *tstam
else
resolution = timer->hw.resolution;
}
list_for_each(p, &timer->active_list_head) {
ti = list_entry(p, struct snd_timer_instance, active_list);
list_for_each_entry(ti, &timer->active_list_head, active_list) {
if (ti->ccallback)
ti->ccallback(ti, event, tstamp, resolution);
list_for_each(n, &ti->slave_active_head) {
ts = list_entry(n, struct snd_timer_instance, active_list);
list_for_each_entry(ts, &ti->slave_active_head, active_list)
if (ts->ccallback)
ts->ccallback(ts, event, tstamp, resolution);
}
}
spin_unlock_irqrestore(&timer->lock, flags);
}
@@ -1057,11 +1034,9 @@ static void snd_timer_proc_read(struct snd_info_entry *entry,
{
struct snd_timer *timer;
struct snd_timer_instance *ti;
struct list_head *p, *q;
mutex_lock(&register_mutex);
list_for_each(p, &snd_timer_list) {
timer = list_entry(p, struct snd_timer, device_list);
list_for_each_entry(timer, &snd_timer_list, device_list) {
switch (timer->tmr_class) {
case SNDRV_TIMER_CLASS_GLOBAL:
snd_iprintf(buffer, "G%i: ", timer->tmr_device);
@@ -1088,14 +1063,12 @@ static void snd_timer_proc_read(struct snd_info_entry *entry,
if (timer->hw.flags & SNDRV_TIMER_HW_SLAVE)
snd_iprintf(buffer, " SLAVE");
snd_iprintf(buffer, "\n");
list_for_each(q, &timer->open_list_head) {
ti = list_entry(q, struct snd_timer_instance, open_list);
list_for_each_entry(ti, &timer->open_list_head, open_list)
snd_iprintf(buffer, " Client %s : %s\n",
ti->owner ? ti->owner : "unknown",
ti->flags & (SNDRV_TIMER_IFLG_START |
SNDRV_TIMER_IFLG_RUNNING)
? "running" : "stopped");
}
}
mutex_unlock(&register_mutex);
}