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Diffstat (limited to 'sound')
-rw-r--r--sound/core/oss/pcm_oss.c133
1 files changed, 63 insertions, 70 deletions
diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index c056cbfe551..91114c7aeff 100644
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -208,9 +208,8 @@ static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream,
oss_buffer_size = runtime->oss.mmap_bytes;
}
- if (substream->oss.setup &&
- substream->oss.setup->period_size > 16)
- oss_period_size = substream->oss.setup->period_size;
+ if (substream->oss.setup.period_size > 16)
+ oss_period_size = substream->oss.setup.period_size;
else if (runtime->oss.fragshift) {
oss_period_size = 1 << runtime->oss.fragshift;
if (oss_period_size > oss_buffer_size / 2)
@@ -252,10 +251,8 @@ static int snd_pcm_oss_period_size(struct snd_pcm_substream *substream,
oss_periods = oss_buffer_size / oss_period_size;
- if (substream->oss.setup) {
- if (substream->oss.setup->periods > 1)
- oss_periods = substream->oss.setup->periods;
- }
+ if (substream->oss.setup.periods > 1)
+ oss_periods = substream->oss.setup.periods;
s = snd_pcm_hw_param_value_max(slave_params, SNDRV_PCM_HW_PARAM_PERIODS, NULL);
if (runtime->oss.maxfrags && s > runtime->oss.maxfrags)
@@ -341,12 +338,10 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream)
goto failure;
}
- if (atomic_read(&runtime->mmap_count)) {
+ if (atomic_read(&runtime->mmap_count))
direct = 1;
- } else {
- struct snd_pcm_oss_setup *setup = substream->oss.setup;
- direct = (setup != NULL && setup->direct);
- }
+ else
+ direct = substream->oss.setup.direct;
_snd_pcm_hw_params_any(sparams);
_snd_pcm_hw_param_setinteger(sparams, SNDRV_PCM_HW_PARAM_PERIODS);
@@ -482,7 +477,7 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream)
1 : runtime->period_size;
sw_params->xfer_align = 1;
if (atomic_read(&runtime->mmap_count) ||
- (substream->oss.setup && substream->oss.setup->nosilence)) {
+ substream->oss.setup.nosilence) {
sw_params->silence_threshold = 0;
sw_params->silence_size = 0;
} else {
@@ -843,7 +838,7 @@ static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const cha
buf += tmp;
bytes -= tmp;
xfer += tmp;
- if ((substream->oss.setup != NULL && substream->oss.setup->partialfrag) ||
+ if (substream->oss.setup.partialfrag ||
runtime->oss.buffer_used == runtime->oss.period_bytes) {
tmp = snd_pcm_oss_write2(substream, runtime->oss.buffer + runtime->oss.period_ptr,
runtime->oss.buffer_used - runtime->oss.period_ptr, 1);
@@ -1214,12 +1209,10 @@ static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file)
if ((err = snd_pcm_oss_get_active_substream(pcm_oss_file, &substream)) < 0)
return err;
- if (atomic_read(&substream->runtime->mmap_count)) {
+ if (atomic_read(&substream->runtime->mmap_count))
direct = 1;
- } else {
- struct snd_pcm_oss_setup *setup = substream->oss.setup;
- direct = (setup != NULL && setup->direct);
- }
+ else
+ direct = substream->oss.setup.direct;
if (!direct)
return AFMT_MU_LAW | AFMT_U8 |
AFMT_S16_LE | AFMT_S16_BE |
@@ -1555,8 +1548,7 @@ static int snd_pcm_oss_get_ptr(struct snd_pcm_oss_file *pcm_oss_file, int stream
} else {
delay = snd_pcm_oss_bytes(substream, delay);
if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
- struct snd_pcm_oss_setup *setup = substream->oss.setup;
- if (setup && setup->buggyptr)
+ if (substream->oss.setup.buggyptr)
info.blocks = (runtime->oss.buffer_bytes - delay - fixup) / runtime->oss.period_bytes;
else
info.blocks = (delay + fixup) / runtime->oss.period_bytes;
@@ -1638,37 +1630,34 @@ static int snd_pcm_oss_get_mapbuf(struct snd_pcm_oss_file *pcm_oss_file, int str
return -EINVAL;
}
-static struct snd_pcm_oss_setup *snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream, const char *task_name)
+static const char *strip_task_path(const char *path)
{
- const char *ptr, *ptrl;
- struct snd_pcm_oss_setup *setup;
-
- mutex_lock(&pcm->streams[stream].oss.setup_mutex);
- for (setup = pcm->streams[stream].oss.setup_list; setup; setup = setup->next) {
- if (!strcmp(setup->task_name, task_name)) {
- mutex_unlock(&pcm->streams[stream].oss.setup_mutex);
- return setup;
- }
- }
- ptr = ptrl = task_name;
- while (*ptr) {
+ const char *ptr, *ptrl = NULL;
+ for (ptr = path; *ptr; ptr++) {
if (*ptr == '/')
ptrl = ptr + 1;
- ptr++;
- }
- if (ptrl == task_name) {
- goto __not_found;
- return NULL;
}
- for (setup = pcm->streams[stream].oss.setup_list; setup; setup = setup->next) {
- if (!strcmp(setup->task_name, ptrl)) {
- mutex_unlock(&pcm->streams[stream].oss.setup_mutex);
- return setup;
+ return ptrl;
+}
+
+static void snd_pcm_oss_look_for_setup(struct snd_pcm *pcm, int stream,
+ const char *task_name,
+ struct snd_pcm_oss_setup *rsetup)
+{
+ struct snd_pcm_oss_setup *setup;
+
+ mutex_lock(&pcm->streams[stream].oss.setup_mutex);
+ do {
+ for (setup = pcm->streams[stream].oss.setup_list; setup;
+ setup = setup->next) {
+ if (!strcmp(setup->task_name, task_name))
+ goto out;
}
- }
- __not_found:
+ } while ((task_name = strip_task_path(task_name)) != NULL);
+ out:
+ if (setup)
+ *rsetup = *setup;
mutex_unlock(&pcm->streams[stream].oss.setup_mutex);
- return NULL;
}
static void snd_pcm_oss_release_substream(struct snd_pcm_substream *substream)
@@ -1690,7 +1679,7 @@ static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream,
struct snd_pcm_runtime *runtime;
substream->oss.oss = 1;
- substream->oss.setup = setup;
+ substream->oss.setup = *setup;
if (setup->nonblock)
substream->ffile->f_flags |= O_NONBLOCK;
else
@@ -1733,7 +1722,7 @@ static int snd_pcm_oss_open_file(struct file *file,
struct snd_pcm *pcm,
struct snd_pcm_oss_file **rpcm_oss_file,
int minor,
- struct snd_pcm_oss_setup **setup)
+ struct snd_pcm_oss_setup *setup)
{
int idx, err;
struct snd_pcm_oss_file *pcm_oss_file;
@@ -1752,7 +1741,7 @@ static int snd_pcm_oss_open_file(struct file *file,
f_mode = FMODE_WRITE;
for (idx = 0; idx < 2; idx++) {
- if (! setup[idx] || setup[idx]->disable)
+ if (setup[idx].disable)
continue;
if (idx == SNDRV_PCM_STREAM_PLAYBACK) {
if (! (f_mode & FMODE_WRITE))
@@ -1768,7 +1757,7 @@ static int snd_pcm_oss_open_file(struct file *file,
}
pcm_oss_file->streams[idx] = substream;
- snd_pcm_oss_init_substream(substream, setup[idx], minor);
+ snd_pcm_oss_init_substream(substream, &setup[idx], minor);
}
if (! pcm_oss_file->streams[0] && pcm_oss_file->streams[1]) {
@@ -1799,7 +1788,7 @@ static int snd_pcm_oss_open(struct inode *inode, struct file *file)
char task_name[32];
struct snd_pcm *pcm;
struct snd_pcm_oss_file *pcm_oss_file;
- struct snd_pcm_oss_setup *setup[2];
+ struct snd_pcm_oss_setup setup[2];
int nonblock;
wait_queue_t wait;
@@ -1822,9 +1811,11 @@ static int snd_pcm_oss_open(struct inode *inode, struct file *file)
}
memset(setup, 0, sizeof(*setup));
if (file->f_mode & FMODE_WRITE)
- setup[0] = snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK, task_name);
+ snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+ task_name, &setup[0]);
if (file->f_mode & FMODE_READ)
- setup[1] = snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_CAPTURE, task_name);
+ snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_CAPTURE,
+ task_name, &setup[1]);
nonblock = !!(file->f_flags & O_NONBLOCK);
if (!nonblock)
@@ -2249,13 +2240,8 @@ static void snd_pcm_oss_proc_read(struct snd_info_entry *entry,
static void snd_pcm_oss_proc_free_setup_list(struct snd_pcm_str * pstr)
{
- unsigned int idx;
- struct snd_pcm_substream *substream;
struct snd_pcm_oss_setup *setup, *setupn;
- for (idx = 0, substream = pstr->substream;
- idx < pstr->substream_count; idx++, substream = substream->next)
- substream->oss.setup = NULL;
for (setup = pstr->oss.setup_list, pstr->oss.setup_list = NULL;
setup; setup = setupn) {
setupn = setup->next;
@@ -2316,21 +2302,28 @@ static void snd_pcm_oss_proc_write(struct snd_info_entry *entry,
}
} while (*str);
if (setup == NULL) {
- setup = kmalloc(sizeof(struct snd_pcm_oss_setup), GFP_KERNEL);
- if (setup) {
- if (pstr->oss.setup_list == NULL) {
- pstr->oss.setup_list = setup;
- } else {
- for (setup1 = pstr->oss.setup_list; setup1->next; setup1 = setup1->next);
- setup1->next = setup;
- }
- template.task_name = kstrdup(task_name, GFP_KERNEL);
- } else {
+ setup = kmalloc(sizeof(*setup), GFP_KERNEL);
+ if (! setup) {
+ buffer->error = -ENOMEM;
+ mutex_lock(&pstr->oss.setup_mutex);
+ return;
+ }
+ if (pstr->oss.setup_list == NULL)
+ pstr->oss.setup_list = setup;
+ else {
+ for (setup1 = pstr->oss.setup_list;
+ setup1->next; setup1 = setup1->next);
+ setup1->next = setup;
+ }
+ template.task_name = kstrdup(task_name, GFP_KERNEL);
+ if (! template.task_name) {
+ kfree(setup);
buffer->error = -ENOMEM;
+ mutex_lock(&pstr->oss.setup_mutex);
+ return;
}
}
- if (setup)
- *setup = template;
+ *setup = template;
mutex_unlock(&pstr->oss.setup_mutex);
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 20:49:13 +0000