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-rw-r--r--sound/core/control.c18
-rw-r--r--sound/core/init.c4
-rw-r--r--sound/core/oss/pcm_oss.c185
-rw-r--r--sound/core/pcm_lib.c8
-rw-r--r--sound/core/pcm_native.c19
-rw-r--r--sound/core/vmaster.c7
6 files changed, 179 insertions, 62 deletions
diff --git a/sound/core/control.c b/sound/core/control.c
index 8a77620a3854..69734b0eafd0 100644
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -105,7 +105,7 @@ static void snd_ctl_empty_read_queue(struct snd_ctl_file * ctl)
{
unsigned long flags;
struct snd_kctl_event *cread;
-
+
spin_lock_irqsave(&ctl->read_lock, flags);
while (!list_empty(&ctl->events)) {
cread = snd_kctl_event(ctl->events.next);
@@ -159,7 +159,7 @@ void snd_ctl_notify(struct snd_card *card, unsigned int mask,
unsigned long flags;
struct snd_ctl_file *ctl;
struct snd_kctl_event *ev;
-
+
if (snd_BUG_ON(!card || !id))
return;
if (card->shutdown)
@@ -213,7 +213,7 @@ static int snd_ctl_new(struct snd_kcontrol **kctl, unsigned int count,
{
unsigned int size;
unsigned int idx;
-
+
if (count == 0 || count > MAX_CONTROL_COUNT)
return -EINVAL;
@@ -238,7 +238,7 @@ static int snd_ctl_new(struct snd_kcontrol **kctl, unsigned int count,
* @ncontrol: the initialization record
* @private_data: the private data to set
*
- * Allocates a new struct snd_kcontrol instance and initialize from the given
+ * Allocates a new struct snd_kcontrol instance and initialize from the given
* template. When the access field of ncontrol is 0, it's assumed as
* READWRITE access. When the count field is 0, it's assumes as one.
*
@@ -251,7 +251,7 @@ struct snd_kcontrol *snd_ctl_new1(const struct snd_kcontrol_new *ncontrol,
unsigned int count;
unsigned int access;
int err;
-
+
if (snd_BUG_ON(!ncontrol || !ncontrol->info))
return NULL;
@@ -753,7 +753,7 @@ static int snd_ctl_elem_list(struct snd_card *card,
struct snd_ctl_elem_id id;
unsigned int offset, space, jidx;
int err = 0;
-
+
if (copy_from_user(&list, _list, sizeof(list)))
return -EFAULT;
offset = list.offset;
@@ -827,7 +827,7 @@ static int snd_ctl_elem_info(struct snd_ctl_file *ctl,
struct snd_kcontrol_volatile *vd;
unsigned int index_offset;
int result;
-
+
down_read(&card->controls_rwsem);
kctl = snd_ctl_find_id(card, &info->id);
if (kctl == NULL) {
@@ -992,7 +992,7 @@ static int snd_ctl_elem_lock(struct snd_ctl_file *file,
struct snd_kcontrol *kctl;
struct snd_kcontrol_volatile *vd;
int result;
-
+
if (copy_from_user(&id, _id, sizeof(id)))
return -EFAULT;
down_write(&card->controls_rwsem);
@@ -1020,7 +1020,7 @@ static int snd_ctl_elem_unlock(struct snd_ctl_file *file,
struct snd_kcontrol *kctl;
struct snd_kcontrol_volatile *vd;
int result;
-
+
if (copy_from_user(&id, _id, sizeof(id)))
return -EFAULT;
down_write(&card->controls_rwsem);
diff --git a/sound/core/init.c b/sound/core/init.c
index 4fa5dd955740..79b4df1c1dc7 100644
--- a/sound/core/init.c
+++ b/sound/core/init.c
@@ -670,7 +670,7 @@ card_id_show_attr(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct snd_card *card = container_of(dev, struct snd_card, card_dev);
- return snprintf(buf, PAGE_SIZE, "%s\n", card->id);
+ return scnprintf(buf, PAGE_SIZE, "%s\n", card->id);
}
static ssize_t
@@ -710,7 +710,7 @@ card_number_show_attr(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct snd_card *card = container_of(dev, struct snd_card, card_dev);
- return snprintf(buf, PAGE_SIZE, "%i\n", card->number);
+ return scnprintf(buf, PAGE_SIZE, "%i\n", card->number);
}
static DEVICE_ATTR(number, S_IRUGO, card_number_show_attr, NULL);
diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index 441405081195..481ab0e94ffa 100644
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -823,8 +823,25 @@ static int choose_rate(struct snd_pcm_substream *substream,
return snd_pcm_hw_param_near(substream, params, SNDRV_PCM_HW_PARAM_RATE, best_rate, NULL);
}
-static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream,
- bool trylock)
+/* parameter locking: returns immediately if tried during streaming */
+static int lock_params(struct snd_pcm_runtime *runtime)
+{
+ if (mutex_lock_interruptible(&runtime->oss.params_lock))
+ return -ERESTARTSYS;
+ if (atomic_read(&runtime->oss.rw_ref)) {
+ mutex_unlock(&runtime->oss.params_lock);
+ return -EBUSY;
+ }
+ return 0;
+}
+
+static void unlock_params(struct snd_pcm_runtime *runtime)
+{
+ mutex_unlock(&runtime->oss.params_lock);
+}
+
+/* call with params_lock held */
+static int snd_pcm_oss_change_params_locked(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_pcm_hw_params *params, *sparams;
@@ -838,11 +855,8 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream,
const struct snd_mask *sformat_mask;
struct snd_mask mask;
- if (trylock) {
- if (!(mutex_trylock(&runtime->oss.params_lock)))
- return -EAGAIN;
- } else if (mutex_lock_interruptible(&runtime->oss.params_lock))
- return -ERESTARTSYS;
+ if (!runtime->oss.params)
+ return 0;
sw_params = kzalloc(sizeof(*sw_params), GFP_KERNEL);
params = kmalloc(sizeof(*params), GFP_KERNEL);
sparams = kmalloc(sizeof(*sparams), GFP_KERNEL);
@@ -1068,6 +1082,23 @@ failure:
kfree(sw_params);
kfree(params);
kfree(sparams);
+ return err;
+}
+
+/* this one takes the lock by itself */
+static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream,
+ bool trylock)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ int err;
+
+ if (trylock) {
+ if (!(mutex_trylock(&runtime->oss.params_lock)))
+ return -EAGAIN;
+ } else if (mutex_lock_interruptible(&runtime->oss.params_lock))
+ return -ERESTARTSYS;
+
+ err = snd_pcm_oss_change_params_locked(substream);
mutex_unlock(&runtime->oss.params_lock);
return err;
}
@@ -1096,11 +1127,14 @@ static int snd_pcm_oss_get_active_substream(struct snd_pcm_oss_file *pcm_oss_fil
return 0;
}
+/* call with params_lock held */
static int snd_pcm_oss_prepare(struct snd_pcm_substream *substream)
{
int err;
struct snd_pcm_runtime *runtime = substream->runtime;
+ if (!runtime->oss.prepare)
+ return 0;
err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_PREPARE, NULL);
if (err < 0) {
pcm_dbg(substream->pcm,
@@ -1120,8 +1154,6 @@ static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream)
struct snd_pcm_runtime *runtime;
int err;
- if (substream == NULL)
- return 0;
runtime = substream->runtime;
if (runtime->oss.params) {
err = snd_pcm_oss_change_params(substream, false);
@@ -1129,6 +1161,29 @@ static int snd_pcm_oss_make_ready(struct snd_pcm_substream *substream)
return err;
}
if (runtime->oss.prepare) {
+ if (mutex_lock_interruptible(&runtime->oss.params_lock))
+ return -ERESTARTSYS;
+ err = snd_pcm_oss_prepare(substream);
+ mutex_unlock(&runtime->oss.params_lock);
+ if (err < 0)
+ return err;
+ }
+ return 0;
+}
+
+/* call with params_lock held */
+static int snd_pcm_oss_make_ready_locked(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime;
+ int err;
+
+ runtime = substream->runtime;
+ if (runtime->oss.params) {
+ err = snd_pcm_oss_change_params_locked(substream);
+ if (err < 0)
+ return err;
+ }
+ if (runtime->oss.prepare) {
err = snd_pcm_oss_prepare(substream);
if (err < 0)
return err;
@@ -1332,13 +1387,15 @@ static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const cha
if (atomic_read(&substream->mmap_count))
return -ENXIO;
- if ((tmp = snd_pcm_oss_make_ready(substream)) < 0)
- return tmp;
+ atomic_inc(&runtime->oss.rw_ref);
while (bytes > 0) {
if (mutex_lock_interruptible(&runtime->oss.params_lock)) {
tmp = -ERESTARTSYS;
break;
}
+ tmp = snd_pcm_oss_make_ready_locked(substream);
+ if (tmp < 0)
+ goto err;
if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) {
tmp = bytes;
if (tmp + runtime->oss.buffer_used > runtime->oss.period_bytes)
@@ -1394,6 +1451,7 @@ static ssize_t snd_pcm_oss_write1(struct snd_pcm_substream *substream, const cha
}
tmp = 0;
}
+ atomic_dec(&runtime->oss.rw_ref);
return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
}
@@ -1439,13 +1497,15 @@ static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __use
if (atomic_read(&substream->mmap_count))
return -ENXIO;
- if ((tmp = snd_pcm_oss_make_ready(substream)) < 0)
- return tmp;
+ atomic_inc(&runtime->oss.rw_ref);
while (bytes > 0) {
if (mutex_lock_interruptible(&runtime->oss.params_lock)) {
tmp = -ERESTARTSYS;
break;
}
+ tmp = snd_pcm_oss_make_ready_locked(substream);
+ if (tmp < 0)
+ goto err;
if (bytes < runtime->oss.period_bytes || runtime->oss.buffer_used > 0) {
if (runtime->oss.buffer_used == 0) {
tmp = snd_pcm_oss_read2(substream, runtime->oss.buffer, runtime->oss.period_bytes, 1);
@@ -1486,6 +1546,7 @@ static ssize_t snd_pcm_oss_read1(struct snd_pcm_substream *substream, char __use
}
tmp = 0;
}
+ atomic_dec(&runtime->oss.rw_ref);
return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
}
@@ -1501,10 +1562,12 @@ static int snd_pcm_oss_reset(struct snd_pcm_oss_file *pcm_oss_file)
continue;
runtime = substream->runtime;
snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
+ mutex_lock(&runtime->oss.params_lock);
runtime->oss.prepare = 1;
runtime->oss.buffer_used = 0;
runtime->oss.prev_hw_ptr_period = 0;
runtime->oss.period_ptr = 0;
+ mutex_unlock(&runtime->oss.params_lock);
}
return 0;
}
@@ -1590,9 +1653,13 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
goto __direct;
if ((err = snd_pcm_oss_make_ready(substream)) < 0)
return err;
+ atomic_inc(&runtime->oss.rw_ref);
+ if (mutex_lock_interruptible(&runtime->oss.params_lock)) {
+ atomic_dec(&runtime->oss.rw_ref);
+ return -ERESTARTSYS;
+ }
format = snd_pcm_oss_format_from(runtime->oss.format);
width = snd_pcm_format_physical_width(format);
- mutex_lock(&runtime->oss.params_lock);
if (runtime->oss.buffer_used > 0) {
#ifdef OSS_DEBUG
pcm_dbg(substream->pcm, "sync: buffer_used\n");
@@ -1602,10 +1669,8 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
runtime->oss.buffer + runtime->oss.buffer_used,
size);
err = snd_pcm_oss_sync1(substream, runtime->oss.period_bytes);
- if (err < 0) {
- mutex_unlock(&runtime->oss.params_lock);
- return err;
- }
+ if (err < 0)
+ goto unlock;
} else if (runtime->oss.period_ptr > 0) {
#ifdef OSS_DEBUG
pcm_dbg(substream->pcm, "sync: period_ptr\n");
@@ -1615,10 +1680,8 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
runtime->oss.buffer,
size * 8 / width);
err = snd_pcm_oss_sync1(substream, size);
- if (err < 0) {
- mutex_unlock(&runtime->oss.params_lock);
- return err;
- }
+ if (err < 0)
+ goto unlock;
}
/*
* The ALSA's period might be a bit large than OSS one.
@@ -1632,7 +1695,11 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
else if (runtime->access == SNDRV_PCM_ACCESS_RW_NONINTERLEAVED)
snd_pcm_lib_writev(substream, NULL, size);
}
+unlock:
mutex_unlock(&runtime->oss.params_lock);
+ atomic_dec(&runtime->oss.rw_ref);
+ if (err < 0)
+ return err;
/*
* finish sync: drain the buffer
*/
@@ -1643,7 +1710,9 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
substream->f_flags = saved_f_flags;
if (err < 0)
return err;
+ mutex_lock(&runtime->oss.params_lock);
runtime->oss.prepare = 1;
+ mutex_unlock(&runtime->oss.params_lock);
}
substream = pcm_oss_file->streams[SNDRV_PCM_STREAM_CAPTURE];
@@ -1654,8 +1723,10 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
err = snd_pcm_kernel_ioctl(substream, SNDRV_PCM_IOCTL_DROP, NULL);
if (err < 0)
return err;
+ mutex_lock(&runtime->oss.params_lock);
runtime->oss.buffer_used = 0;
runtime->oss.prepare = 1;
+ mutex_unlock(&runtime->oss.params_lock);
}
return 0;
}
@@ -1667,6 +1738,8 @@ static int snd_pcm_oss_set_rate(struct snd_pcm_oss_file *pcm_oss_file, int rate)
for (idx = 1; idx >= 0; --idx) {
struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
struct snd_pcm_runtime *runtime;
+ int err;
+
if (substream == NULL)
continue;
runtime = substream->runtime;
@@ -1674,10 +1747,14 @@ static int snd_pcm_oss_set_rate(struct snd_pcm_oss_file *pcm_oss_file, int rate)
rate = 1000;
else if (rate > 192000)
rate = 192000;
+ err = lock_params(runtime);
+ if (err < 0)
+ return err;
if (runtime->oss.rate != rate) {
runtime->oss.params = 1;
runtime->oss.rate = rate;
}
+ unlock_params(runtime);
}
return snd_pcm_oss_get_rate(pcm_oss_file);
}
@@ -1702,13 +1779,19 @@ static int snd_pcm_oss_set_channels(struct snd_pcm_oss_file *pcm_oss_file, unsig
for (idx = 1; idx >= 0; --idx) {
struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
struct snd_pcm_runtime *runtime;
+ int err;
+
if (substream == NULL)
continue;
runtime = substream->runtime;
+ err = lock_params(runtime);
+ if (err < 0)
+ return err;
if (runtime->oss.channels != channels) {
runtime->oss.params = 1;
runtime->oss.channels = channels;
}
+ unlock_params(runtime);
}
return snd_pcm_oss_get_channels(pcm_oss_file);
}
@@ -1781,6 +1864,7 @@ static int snd_pcm_oss_get_formats(struct snd_pcm_oss_file *pcm_oss_file)
static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int format)
{
int formats, idx;
+ int err;
if (format != AFMT_QUERY) {
formats = snd_pcm_oss_get_formats(pcm_oss_file);
@@ -1794,10 +1878,14 @@ static int snd_pcm_oss_set_format(struct snd_pcm_oss_file *pcm_oss_file, int for
if (substream == NULL)
continue;
runtime = substream->runtime;
+ err = lock_params(runtime);
+ if (err < 0)
+ return err;
if (runtime->oss.format != format) {
runtime->oss.params = 1;
runtime->oss.format = format;
}
+ unlock_params(runtime);
}
}
return snd_pcm_oss_get_format(pcm_oss_file);
@@ -1817,8 +1905,6 @@ static int snd_pcm_oss_set_subdivide1(struct snd_pcm_substream *substream, int s
{
struct snd_pcm_runtime *runtime;
- if (substream == NULL)
- return 0;
runtime = substream->runtime;
if (subdivide == 0) {
subdivide = runtime->oss.subdivision;
@@ -1842,9 +1928,17 @@ static int snd_pcm_oss_set_subdivide(struct snd_pcm_oss_file *pcm_oss_file, int
for (idx = 1; idx >= 0; --idx) {
struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
+ struct snd_pcm_runtime *runtime;
+
if (substream == NULL)
continue;
- if ((err = snd_pcm_oss_set_subdivide1(substream, subdivide)) < 0)
+ runtime = substream->runtime;
+ err = lock_params(runtime);
+ if (err < 0)
+ return err;
+ err = snd_pcm_oss_set_subdivide1(substream, subdivide);
+ unlock_params(runtime);
+ if (err < 0)
return err;
}
return err;
@@ -1854,8 +1948,6 @@ static int snd_pcm_oss_set_fragment1(struct snd_pcm_substream *substream, unsign
{
struct snd_pcm_runtime *runtime;
- if (substream == NULL)
- return 0;
runtime = substream->runtime;
if (runtime->oss.subdivision || runtime->oss.fragshift)
return -EINVAL;
@@ -1875,9 +1967,17 @@ static int snd_pcm_oss_set_fragment(struct snd_pcm_oss_file *pcm_oss_file, unsig
for (idx = 1; idx >= 0; --idx) {
struct snd_pcm_substream *substream = pcm_oss_file->streams[idx];
+ struct snd_pcm_runtime *runtime;
+
if (substream == NULL)
continue;
- if ((err = snd_pcm_oss_set_fragment1(substream, val)) < 0)
+ runtime = substream->runtime;
+ err = lock_params(runtime);
+ if (err < 0)
+ return err;
+ err = snd_pcm_oss_set_fragment1(substream, val);
+ unlock_params(runtime);
+ if (err < 0)
return err;
}
return err;
@@ -1961,6 +2061,9 @@ static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int tr
}
if (psubstream) {
runtime = psubstream->runtime;
+ cmd = 0;
+ if (mutex_lock_interruptible(&runtime->oss.params_lock))
+ return -ERESTARTSYS;
if (trigger & PCM_ENABLE_OUTPUT) {
if (runtime->oss.trigger)
goto _skip1;
@@ -1978,13 +2081,19 @@ static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int tr
cmd = SNDRV_PCM_IOCTL_DROP;
runtime->oss.prepare = 1;
}
- err = snd_pcm_kernel_ioctl(psubstream, cmd, NULL);
- if (err < 0)
- return err;
- }
_skip1:
+ mutex_unlock(&runtime->oss.params_lock);
+ if (cmd) {
+ err = snd_pcm_kernel_ioctl(psubstream, cmd, NULL);
+ if (err < 0)
+ return err;
+ }
+ }
if (csubstream) {
runtime = csubstream->runtime;
+ cmd = 0;
+ if (mutex_lock_interruptible(&runtime->oss.params_lock))
+ return -ERESTARTSYS;
if (trigger & PCM_ENABLE_INPUT) {
if (runtime->oss.trigger)
goto _skip2;
@@ -1999,11 +2108,14 @@ static int snd_pcm_oss_set_trigger(struct snd_pcm_oss_file *pcm_oss_file, int tr
cmd = SNDRV_PCM_IOCTL_DROP;
runtime->oss.prepare = 1;
}
- err = snd_pcm_kernel_ioctl(csubstream, cmd, NULL);
- if (err < 0)
- return err;
- }
_skip2:
+ mutex_unlock(&runtime->oss.params_lock);
+ if (cmd) {
+ err = snd_pcm_kernel_ioctl(csubstream, cmd, NULL);
+ if (err < 0)
+ return err;
+ }
+ }
return 0;
}
@@ -2255,6 +2367,7 @@ static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream,
runtime->oss.maxfrags = 0;
runtime->oss.subdivision = 0;
substream->pcm_release = snd_pcm_oss_release_substream;
+ atomic_set(&runtime->oss.rw_ref, 0);
}
static int snd_pcm_oss_release_file(struct snd_pcm_oss_file *pcm_oss_file)
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index a83152e7d387..f4a19509cccf 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -1129,16 +1129,12 @@ int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime, unsigned int cond,
if (constrs->rules_num >= constrs->rules_all) {
struct snd_pcm_hw_rule *new;
unsigned int new_rules = constrs->rules_all + 16;
- new = kcalloc(new_rules, sizeof(*c), GFP_KERNEL);
+ new = krealloc(constrs->rules, new_rules * sizeof(*c),
+ GFP_KERNEL);
if (!new) {
va_end(args);
return -ENOMEM;
}
- if (constrs->rules) {
- memcpy(new, constrs->rules,
- constrs->rules_num * sizeof(*c));
- kfree(constrs->rules);
- }
constrs->rules = new;
constrs->rules_all = new_rules;
}
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index d18b3982548b..b84554893fab 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -323,7 +323,7 @@ static int constrain_params_by_rules(struct snd_pcm_substream *substream,
struct snd_pcm_hw_constraints *constrs =
&substream->runtime->hw_constraints;
unsigned int k;
- unsigned int rstamps[constrs->rules_num];
+ unsigned int *rstamps;
unsigned int vstamps[SNDRV_PCM_HW_PARAM_LAST_INTERVAL + 1];
unsigned int stamp;
struct snd_pcm_hw_rule *r;
@@ -331,7 +331,7 @@ static int constrain_params_by_rules(struct snd_pcm_substream *substream,
struct snd_mask old_mask;
struct snd_interval old_interval;
bool again;
- int changed;
+ int changed, err = 0;
/*
* Each application of rule has own sequence number.
@@ -339,8 +339,9 @@ static int constrain_params_by_rules(struct snd_pcm_substream *substream,
* Each member of 'rstamps' array represents the sequence number of
* recent application of corresponding rule.
*/
- for (k = 0; k < constrs->rules_num; k++)
- rstamps[k] = 0;
+ rstamps = kcalloc(constrs->rules_num, sizeof(unsigned int), GFP_KERNEL);
+ if (!rstamps)
+ return -ENOMEM;
/*
* Each member of 'vstamps' array represents the sequence number of
@@ -398,8 +399,10 @@ retry:
}
changed = r->func(params, r);
- if (changed < 0)
- return changed;
+ if (changed < 0) {
+ err = changed;
+ goto out;
+ }
/*
* When the parameter is changed, notify it to the caller
@@ -430,7 +433,9 @@ retry:
if (again)
goto retry;
- return 0;
+ out:
+ kfree(rstamps);
+ return err;
}
static int fixup_unreferenced_params(struct snd_pcm_substream *substream,
diff --git a/sound/core/vmaster.c b/sound/core/vmaster.c
index 8632301489fa..9e96186742d0 100644
--- a/sound/core/vmaster.c
+++ b/sound/core/vmaster.c
@@ -63,15 +63,18 @@ static int slave_update(struct link_slave *slave)
struct snd_ctl_elem_value *uctl;
int err, ch;
- uctl = kmalloc(sizeof(*uctl), GFP_KERNEL);
+ uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
if (!uctl)
return -ENOMEM;
uctl->id = slave->slave.id;
err = slave->slave.get(&slave->slave, uctl);
+ if (err < 0)
+ goto error;
for (ch = 0; ch < slave->info.count; ch++)
slave->vals[ch] = uctl->value.integer.value[ch];
+ error:
kfree(uctl);
- return 0;
+ return err < 0 ? err : 0;
}
/* get the slave ctl info and save the initial values */