return usecs;
}
+static void snd_pcm_set_state(struct snd_pcm_substream *substream, int state)
+{
+ snd_pcm_stream_lock_irq(substream);
+ if (substream->runtime->status->state != SNDRV_PCM_STATE_DISCONNECTED)
+ substream->runtime->status->state = state;
+ snd_pcm_stream_unlock_irq(substream);
+}
+
static int snd_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
runtime->boundary *= 2;
snd_pcm_timer_resolution_change(substream);
- runtime->status->state = SNDRV_PCM_STATE_SETUP;
+ snd_pcm_set_state(substream, SNDRV_PCM_STATE_SETUP);
if (pm_qos_request_active(&substream->latency_pm_qos_req))
pm_qos_remove_request(&substream->latency_pm_qos_req);
/* hardware might be unusable from this time,
so we force application to retry to set
the correct hardware parameter settings */
- runtime->status->state = SNDRV_PCM_STATE_OPEN;
+ snd_pcm_set_state(substream, SNDRV_PCM_STATE_OPEN);
if (substream->ops->hw_free != NULL)
substream->ops->hw_free(substream);
return err;
return -EBADFD;
if (substream->ops->hw_free)
result = substream->ops->hw_free(substream);
- runtime->status->state = SNDRV_PCM_STATE_OPEN;
+ snd_pcm_set_state(substream, SNDRV_PCM_STATE_OPEN);
pm_qos_remove_request(&substream->latency_pm_qos_req);
return result;
}
{
struct snd_pcm_runtime *runtime = substream->runtime;
runtime->control->appl_ptr = runtime->status->hw_ptr;
- runtime->status->state = SNDRV_PCM_STATE_PREPARED;
+ snd_pcm_set_state(substream, SNDRV_PCM_STATE_PREPARED);
}
static struct action_ops snd_pcm_action_prepare = {
break; /* all drained */
init_waitqueue_entry(&wait, current);
add_wait_queue(&to_check->sleep, &wait);
- set_current_state(TASK_INTERRUPTIBLE);
snd_pcm_stream_unlock_irq(substream);
up_read(&snd_pcm_link_rwsem);
snd_power_unlock(card);
- tout = schedule_timeout(10 * HZ);
+ if (runtime->no_period_wakeup)
+ tout = MAX_SCHEDULE_TIMEOUT;
+ else {
+ tout = 10;
+ if (runtime->rate) {
+ long t = runtime->period_size * 2 / runtime->rate;
+ tout = max(t, tout);
+ }
+ tout = msecs_to_jiffies(tout * 1000);
+ }
+ tout = schedule_timeout_interruptible(tout);
snd_power_lock(card);
down_read(&snd_pcm_link_rwsem);
snd_pcm_stream_lock_irq(substream);
remove_wait_queue(&to_check->sleep, &wait);
+ if (card->shutdown) {
+ result = -ENODEV;
+ break;
+ }
if (tout == 0) {
if (substream->runtime->status->state == SNDRV_PCM_STATE_SUSPENDED)
result = -ESTRPIPE;
static int snd_pcm_drop(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime;
- struct snd_card *card;
int result = 0;
if (PCM_RUNTIME_CHECK(substream))
return -ENXIO;
runtime = substream->runtime;
- card = substream->pcm->card;
if (runtime->status->state == SNDRV_PCM_STATE_OPEN ||
runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED ||
_end:
write_unlock_irq(&snd_pcm_link_rwlock);
up_write(&snd_pcm_link_rwsem);
+ snd_card_unref(substream1->pcm->card);
fput(file);
return res;
}
{
struct snd_pcm_file *pcm_file;
struct snd_pcm_substream *substream;
- struct snd_pcm_str *str;
int err;
if (rpcm_file)
}
pcm_file->substream = substream;
if (substream->ref_count == 1) {
- str = substream->pstr;
substream->file = pcm_file;
substream->pcm_release = pcm_release_private;
}
return err;
pcm = snd_lookup_minor_data(iminor(inode),
SNDRV_DEVICE_TYPE_PCM_PLAYBACK);
- return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_PLAYBACK);
+ err = snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_PLAYBACK);
+ if (pcm)
+ snd_card_unref(pcm->card);
+ return err;
}
static int snd_pcm_capture_open(struct inode *inode, struct file *file)
return err;
pcm = snd_lookup_minor_data(iminor(inode),
SNDRV_DEVICE_TYPE_PCM_CAPTURE);
- return snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_CAPTURE);
+ err = snd_pcm_open(file, pcm, SNDRV_PCM_STREAM_CAPTURE);
+ if (pcm)
+ snd_card_unref(pcm->card);
+ return err;
}
static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream)
mutex_unlock(&pcm->open_mutex);
schedule();
mutex_lock(&pcm->open_mutex);
+ if (pcm->card->shutdown) {
+ err = -ENODEV;
+ break;
+ }
if (signal_pending(current)) {
err = -ERESTARTSYS;
break;
static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file,
struct vm_area_struct *area)
{
- struct snd_pcm_runtime *runtime;
long size;
if (!(area->vm_flags & VM_READ))
return -EINVAL;
- runtime = substream->runtime;
size = area->vm_end - area->vm_start;
if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status)))
return -EINVAL;
static int snd_pcm_mmap_control(struct snd_pcm_substream *substream, struct file *file,
struct vm_area_struct *area)
{
- struct snd_pcm_runtime *runtime;
long size;
if (!(area->vm_flags & VM_READ))
return -EINVAL;
- runtime = substream->runtime;
size = area->vm_end - area->vm_start;
if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control)))
return -EINVAL;