summaryrefslogtreecommitdiff
path: root/sound/core
diff options
context:
space:
mode:
Diffstat (limited to 'sound/core')
-rw-r--r--sound/core/compress_offload.c60
-rw-r--r--sound/core/control.c6
-rw-r--r--sound/core/oss/rate.c4
-rw-r--r--sound/core/pcm_native.c12
-rw-r--r--sound/core/seq/oss/seq_oss_ioctl.c2
-rw-r--r--sound/core/seq/oss/seq_oss_rw.c2
-rw-r--r--sound/core/seq/seq_clientmgr.c14
-rw-r--r--sound/core/seq/seq_fifo.c17
-rw-r--r--sound/core/seq/seq_fifo.h2
9 files changed, 91 insertions, 28 deletions
diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c
index 99b882158705..41905afada63 100644
--- a/sound/core/compress_offload.c
+++ b/sound/core/compress_offload.c
@@ -574,10 +574,7 @@ snd_compr_set_params(struct snd_compr_stream *stream, unsigned long arg)
stream->metadata_set = false;
stream->next_track = false;
- if (stream->direction == SND_COMPRESS_PLAYBACK)
- stream->runtime->state = SNDRV_PCM_STATE_SETUP;
- else
- stream->runtime->state = SNDRV_PCM_STATE_PREPARED;
+ stream->runtime->state = SNDRV_PCM_STATE_SETUP;
} else {
return -EPERM;
}
@@ -693,8 +690,17 @@ static int snd_compr_start(struct snd_compr_stream *stream)
{
int retval;
- if (stream->runtime->state != SNDRV_PCM_STATE_PREPARED)
+ switch (stream->runtime->state) {
+ case SNDRV_PCM_STATE_SETUP:
+ if (stream->direction != SND_COMPRESS_CAPTURE)
+ return -EPERM;
+ break;
+ case SNDRV_PCM_STATE_PREPARED:
+ break;
+ default:
return -EPERM;
+ }
+
retval = stream->ops->trigger(stream, SNDRV_PCM_TRIGGER_START);
if (!retval)
stream->runtime->state = SNDRV_PCM_STATE_RUNNING;
@@ -705,9 +711,15 @@ static int snd_compr_stop(struct snd_compr_stream *stream)
{
int retval;
- if (stream->runtime->state == SNDRV_PCM_STATE_PREPARED ||
- stream->runtime->state == SNDRV_PCM_STATE_SETUP)
+ switch (stream->runtime->state) {
+ case SNDRV_PCM_STATE_OPEN:
+ case SNDRV_PCM_STATE_SETUP:
+ case SNDRV_PCM_STATE_PREPARED:
return -EPERM;
+ default:
+ break;
+ }
+
retval = stream->ops->trigger(stream, SNDRV_PCM_TRIGGER_STOP);
if (!retval) {
snd_compr_drain_notify(stream);
@@ -795,9 +807,17 @@ static int snd_compr_drain(struct snd_compr_stream *stream)
{
int retval;
- if (stream->runtime->state == SNDRV_PCM_STATE_PREPARED ||
- stream->runtime->state == SNDRV_PCM_STATE_SETUP)
+ switch (stream->runtime->state) {
+ case SNDRV_PCM_STATE_OPEN:
+ case SNDRV_PCM_STATE_SETUP:
+ case SNDRV_PCM_STATE_PREPARED:
+ case SNDRV_PCM_STATE_PAUSED:
return -EPERM;
+ case SNDRV_PCM_STATE_XRUN:
+ return -EPIPE;
+ default:
+ break;
+ }
retval = stream->ops->trigger(stream, SND_COMPR_TRIGGER_DRAIN);
if (retval) {
@@ -817,6 +837,10 @@ static int snd_compr_next_track(struct snd_compr_stream *stream)
if (stream->runtime->state != SNDRV_PCM_STATE_RUNNING)
return -EPERM;
+ /* next track doesn't have any meaning for capture streams */
+ if (stream->direction == SND_COMPRESS_CAPTURE)
+ return -EPERM;
+
/* you can signal next track if this is intended to be a gapless stream
* and current track metadata is set
*/
@@ -834,9 +858,23 @@ static int snd_compr_next_track(struct snd_compr_stream *stream)
static int snd_compr_partial_drain(struct snd_compr_stream *stream)
{
int retval;
- if (stream->runtime->state == SNDRV_PCM_STATE_PREPARED ||
- stream->runtime->state == SNDRV_PCM_STATE_SETUP)
+
+ switch (stream->runtime->state) {
+ case SNDRV_PCM_STATE_OPEN:
+ case SNDRV_PCM_STATE_SETUP:
+ case SNDRV_PCM_STATE_PREPARED:
+ case SNDRV_PCM_STATE_PAUSED:
+ return -EPERM;
+ case SNDRV_PCM_STATE_XRUN:
+ return -EPIPE;
+ default:
+ break;
+ }
+
+ /* partial drain doesn't have any meaning for capture streams */
+ if (stream->direction == SND_COMPRESS_CAPTURE)
return -EPERM;
+
/* stream can be drained only when next track has been signalled */
if (stream->next_track == false)
return -EPERM;
diff --git a/sound/core/control.c b/sound/core/control.c
index 5be5b9b931bf..7a4d8690ce41 100644
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -196,16 +196,12 @@ EXPORT_SYMBOL(snd_ctl_notify);
static int snd_ctl_new(struct snd_kcontrol **kctl, unsigned int count,
unsigned int access, struct snd_ctl_file *file)
{
- unsigned int size;
unsigned int idx;
if (count == 0 || count > MAX_CONTROL_COUNT)
return -EINVAL;
- size = sizeof(struct snd_kcontrol);
- size += sizeof(struct snd_kcontrol_volatile) * count;
-
- *kctl = kzalloc(size, GFP_KERNEL);
+ *kctl = kzalloc(struct_size(*kctl, vd, count), GFP_KERNEL);
if (!*kctl)
return -ENOMEM;
diff --git a/sound/core/oss/rate.c b/sound/core/oss/rate.c
index 2fa9299a440d..7cd09cef6961 100644
--- a/sound/core/oss/rate.c
+++ b/sound/core/oss/rate.c
@@ -323,8 +323,8 @@ int snd_pcm_plugin_build_rate(struct snd_pcm_substream *plug,
err = snd_pcm_plugin_build(plug, "rate conversion",
src_format, dst_format,
- sizeof(struct rate_priv) +
- src_format->channels * sizeof(struct rate_channel),
+ struct_size(data, channels,
+ src_format->channels),
&plugin);
if (err < 0)
return err;
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 860543a4c840..703857aab00f 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -77,7 +77,7 @@ void snd_pcm_group_init(struct snd_pcm_group *group)
spin_lock_init(&group->lock);
mutex_init(&group->mutex);
INIT_LIST_HEAD(&group->substreams);
- refcount_set(&group->refs, 0);
+ refcount_set(&group->refs, 1);
}
/* define group lock helpers */
@@ -1096,8 +1096,7 @@ static void snd_pcm_group_unref(struct snd_pcm_group *group,
if (!group)
return;
- do_free = refcount_dec_and_test(&group->refs) &&
- list_empty(&group->substreams);
+ do_free = refcount_dec_and_test(&group->refs);
snd_pcm_group_unlock(group, substream->pcm->nonatomic);
if (do_free)
kfree(group);
@@ -1874,6 +1873,7 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream,
if (!to_check)
break; /* all drained */
init_waitqueue_entry(&wait, current);
+ set_current_state(TASK_INTERRUPTIBLE);
add_wait_queue(&to_check->sleep, &wait);
snd_pcm_stream_unlock_irq(substream);
if (runtime->no_period_wakeup)
@@ -1886,7 +1886,7 @@ static int snd_pcm_drain(struct snd_pcm_substream *substream,
}
tout = msecs_to_jiffies(tout * 1000);
}
- tout = schedule_timeout_interruptible(tout);
+ tout = schedule_timeout(tout);
snd_pcm_stream_lock_irq(substream);
group = snd_pcm_stream_group_ref(substream);
@@ -2020,6 +2020,7 @@ static int snd_pcm_link(struct snd_pcm_substream *substream, int fd)
snd_pcm_group_lock_irq(target_group, nonatomic);
snd_pcm_stream_lock(substream1);
snd_pcm_group_assign(substream1, target_group);
+ refcount_inc(&target_group->refs);
snd_pcm_stream_unlock(substream1);
snd_pcm_group_unlock_irq(target_group, nonatomic);
_end:
@@ -2056,13 +2057,14 @@ static int snd_pcm_unlink(struct snd_pcm_substream *substream)
snd_pcm_group_lock_irq(group, nonatomic);
relink_to_local(substream);
+ refcount_dec(&group->refs);
/* detach the last stream, too */
if (list_is_singular(&group->substreams)) {
relink_to_local(list_first_entry(&group->substreams,
struct snd_pcm_substream,
link_list));
- do_free = !refcount_read(&group->refs);
+ do_free = refcount_dec_and_test(&group->refs);
}
snd_pcm_group_unlock_irq(group, nonatomic);
diff --git a/sound/core/seq/oss/seq_oss_ioctl.c b/sound/core/seq/oss/seq_oss_ioctl.c
index 96ad01fb668c..ccf682689ec9 100644
--- a/sound/core/seq/oss/seq_oss_ioctl.c
+++ b/sound/core/seq/oss/seq_oss_ioctl.c
@@ -49,7 +49,7 @@ static int snd_seq_oss_oob_user(struct seq_oss_devinfo *dp, void __user *arg)
if (copy_from_user(ev, arg, 8))
return -EFAULT;
memset(&tmpev, 0, sizeof(tmpev));
- snd_seq_oss_fill_addr(dp, &tmpev, dp->addr.port, dp->addr.client);
+ snd_seq_oss_fill_addr(dp, &tmpev, dp->addr.client, dp->addr.port);
tmpev.time.tick = 0;
if (! snd_seq_oss_process_event(dp, (union evrec *)ev, &tmpev)) {
snd_seq_oss_dispatch(dp, &tmpev, 0, 0);
diff --git a/sound/core/seq/oss/seq_oss_rw.c b/sound/core/seq/oss/seq_oss_rw.c
index 79ef430e56e1..537d5f423e20 100644
--- a/sound/core/seq/oss/seq_oss_rw.c
+++ b/sound/core/seq/oss/seq_oss_rw.c
@@ -161,7 +161,7 @@ insert_queue(struct seq_oss_devinfo *dp, union evrec *rec, struct file *opt)
memset(&event, 0, sizeof(event));
/* set dummy -- to be sure */
event.type = SNDRV_SEQ_EVENT_NOTEOFF;
- snd_seq_oss_fill_addr(dp, &event, dp->addr.port, dp->addr.client);
+ snd_seq_oss_fill_addr(dp, &event, dp->addr.client, dp->addr.port);
if (snd_seq_oss_process_event(dp, rec, &event))
return 0; /* invalid event - no need to insert queue */
diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
index a60e7a17f0b8..6d9592f0ae1d 100644
--- a/sound/core/seq/seq_clientmgr.c
+++ b/sound/core/seq/seq_clientmgr.c
@@ -1021,7 +1021,7 @@ static ssize_t snd_seq_write(struct file *file, const char __user *buf,
{
struct snd_seq_client *client = file->private_data;
int written = 0, len;
- int err;
+ int err, handled;
struct snd_seq_event event;
if (!(snd_seq_file_flags(file) & SNDRV_SEQ_LFLG_OUTPUT))
@@ -1034,6 +1034,8 @@ static ssize_t snd_seq_write(struct file *file, const char __user *buf,
if (!client->accept_output || client->pool == NULL)
return -ENXIO;
+ repeat:
+ handled = 0;
/* allocate the pool now if the pool is not allocated yet */
mutex_lock(&client->ioctl_mutex);
if (client->pool->size > 0 && !snd_seq_write_pool_allocated(client)) {
@@ -1093,12 +1095,19 @@ static ssize_t snd_seq_write(struct file *file, const char __user *buf,
0, 0, &client->ioctl_mutex);
if (err < 0)
break;
+ handled++;
__skip_event:
/* Update pointers and counts */
count -= len;
buf += len;
written += len;
+
+ /* let's have a coffee break if too many events are queued */
+ if (++handled >= 200) {
+ mutex_unlock(&client->ioctl_mutex);
+ goto repeat;
+ }
}
out:
@@ -1826,8 +1835,7 @@ static int snd_seq_ioctl_get_client_pool(struct snd_seq_client *client,
if (cptr->type == USER_CLIENT) {
info->input_pool = cptr->data.user.fifo_pool_size;
info->input_free = info->input_pool;
- if (cptr->data.user.fifo)
- info->input_free = snd_seq_unused_cells(cptr->data.user.fifo->pool);
+ info->input_free = snd_seq_fifo_unused_cells(cptr->data.user.fifo);
} else {
info->input_pool = 0;
info->input_free = 0;
diff --git a/sound/core/seq/seq_fifo.c b/sound/core/seq/seq_fifo.c
index ea69261f269a..eaaa8b5830bb 100644
--- a/sound/core/seq/seq_fifo.c
+++ b/sound/core/seq/seq_fifo.c
@@ -263,3 +263,20 @@ int snd_seq_fifo_resize(struct snd_seq_fifo *f, int poolsize)
return 0;
}
+
+/* get the number of unused cells safely */
+int snd_seq_fifo_unused_cells(struct snd_seq_fifo *f)
+{
+ unsigned long flags;
+ int cells;
+
+ if (!f)
+ return 0;
+
+ snd_use_lock_use(&f->use_lock);
+ spin_lock_irqsave(&f->lock, flags);
+ cells = snd_seq_unused_cells(f->pool);
+ spin_unlock_irqrestore(&f->lock, flags);
+ snd_use_lock_free(&f->use_lock);
+ return cells;
+}
diff --git a/sound/core/seq/seq_fifo.h b/sound/core/seq/seq_fifo.h
index edc68743943d..b56a7b897c9c 100644
--- a/sound/core/seq/seq_fifo.h
+++ b/sound/core/seq/seq_fifo.h
@@ -53,5 +53,7 @@ int snd_seq_fifo_poll_wait(struct snd_seq_fifo *f, struct file *file, poll_table
/* resize pool in fifo */
int snd_seq_fifo_resize(struct snd_seq_fifo *f, int poolsize);
+/* get the number of unused cells safely */
+int snd_seq_fifo_unused_cells(struct snd_seq_fifo *f);
#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-06 00:29:48 +0000