#include <linux/mm.h>
#include <linux/file.h>
#include <linux/slab.h>
+#include <linux/smp_lock.h>
#include <linux/time.h>
-#include <linux/latency.h>
+#include <linux/pm_qos_params.h>
#include <linux/uio.h>
#include <sound/core.h>
#include <sound/control.h>
struct snd_pcm *pcm = substream->pcm;
struct snd_pcm_str *pstr = substream->pstr;
- snd_assert(substream != NULL, return -ENXIO);
memset(info, 0, sizeof(*info));
info->card = pcm->card->number;
info->device = pcm->device;
if (!(params->rmask & (1 << k)))
continue;
#ifdef RULES_DEBUG
- printk("%s = ", snd_pcm_hw_param_names[k]);
+ printk(KERN_DEBUG "%s = ", snd_pcm_hw_param_names[k]);
printk("%04x%04x%04x%04x -> ", m->bits[3], m->bits[2], m->bits[1], m->bits[0]);
#endif
changed = snd_mask_refine(m, constrs_mask(constrs, k));
if (!(params->rmask & (1 << k)))
continue;
#ifdef RULES_DEBUG
- printk("%s = ", snd_pcm_hw_param_names[k]);
+ printk(KERN_DEBUG "%s = ", snd_pcm_hw_param_names[k]);
if (i->empty)
printk("empty");
else
if (!doit)
continue;
#ifdef RULES_DEBUG
- printk("Rule %d [%p]: ", k, r->func);
+ printk(KERN_DEBUG "Rule %d [%p]: ", k, r->func);
if (r->var >= 0) {
printk("%s = ", snd_pcm_hw_param_names[r->var]);
if (hw_is_mask(r->var)) {
struct snd_pcm_hw_params *params;
int err;
- params = kmalloc(sizeof(*params), GFP_KERNEL);
- if (!params) {
- err = -ENOMEM;
- goto out;
- }
- if (copy_from_user(params, _params, sizeof(*params))) {
- err = -EFAULT;
- goto out;
- }
+ params = memdup_user(_params, sizeof(*params));
+ if (IS_ERR(params))
+ return PTR_ERR(params);
+
err = snd_pcm_hw_refine(substream, params);
if (copy_to_user(_params, params, sizeof(*params))) {
if (!err)
err = -EFAULT;
}
-out:
+
kfree(params);
return err;
}
unsigned int bits;
snd_pcm_uframes_t frames;
- snd_assert(substream != NULL, return -ENXIO);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
- snd_assert(runtime != NULL, return -ENXIO);
snd_pcm_stream_lock_irq(substream);
switch (runtime->status->state) {
case SNDRV_PCM_STATE_OPEN:
snd_pcm_timer_resolution_change(substream);
runtime->status->state = SNDRV_PCM_STATE_SETUP;
- remove_acceptable_latency(substream->latency_id);
+ pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY,
+ substream->latency_id);
if ((usecs = period_to_usecs(runtime)) >= 0)
- set_acceptable_latency(substream->latency_id, usecs);
+ pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY,
+ substream->latency_id, usecs);
return 0;
_error:
/* hardware might be unuseable from this time,
struct snd_pcm_hw_params *params;
int err;
- params = kmalloc(sizeof(*params), GFP_KERNEL);
- if (!params) {
- err = -ENOMEM;
- goto out;
- }
- if (copy_from_user(params, _params, sizeof(*params))) {
- err = -EFAULT;
- goto out;
- }
+ params = memdup_user(_params, sizeof(*params));
+ if (IS_ERR(params))
+ return PTR_ERR(params);
+
err = snd_pcm_hw_params(substream, params);
if (copy_to_user(_params, params, sizeof(*params))) {
if (!err)
err = -EFAULT;
}
-out:
+
kfree(params);
return err;
}
struct snd_pcm_runtime *runtime;
int result = 0;
- snd_assert(substream != NULL, return -ENXIO);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
- snd_assert(runtime != NULL, return -ENXIO);
snd_pcm_stream_lock_irq(substream);
switch (runtime->status->state) {
case SNDRV_PCM_STATE_SETUP:
if (substream->ops->hw_free)
result = substream->ops->hw_free(substream);
runtime->status->state = SNDRV_PCM_STATE_OPEN;
- remove_acceptable_latency(substream->latency_id);
+ pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY,
+ substream->latency_id);
return result;
}
{
struct snd_pcm_runtime *runtime;
- snd_assert(substream != NULL, return -ENXIO);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
- snd_assert(runtime != NULL, return -ENXIO);
snd_pcm_stream_lock_irq(substream);
if (runtime->status->state == SNDRV_PCM_STATE_OPEN) {
snd_pcm_stream_unlock_irq(substream);
if (status->state == SNDRV_PCM_STATE_OPEN)
goto _end;
status->trigger_tstamp = runtime->trigger_tstamp;
- if (snd_pcm_running(substream))
+ if (snd_pcm_running(substream)) {
snd_pcm_update_hw_ptr(substream);
+ if (runtime->tstamp_mode == SNDRV_PCM_TSTAMP_ENABLE) {
+ status->tstamp = runtime->status->tstamp;
+ goto _tstamp_end;
+ }
+ }
snd_pcm_gettime(runtime, &status->tstamp);
+ _tstamp_end:
status->appl_ptr = runtime->control->appl_ptr;
status->hw_ptr = runtime->status->hw_ptr;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
status->avail = snd_pcm_playback_avail(runtime);
if (runtime->status->state == SNDRV_PCM_STATE_RUNNING ||
- runtime->status->state == SNDRV_PCM_STATE_DRAINING)
+ runtime->status->state == SNDRV_PCM_STATE_DRAINING) {
status->delay = runtime->buffer_size - status->avail;
- else
+ status->delay += runtime->delay;
+ } else
status->delay = 0;
} else {
status->avail = snd_pcm_capture_avail(runtime);
if (runtime->status->state == SNDRV_PCM_STATE_RUNNING)
- status->delay = status->avail;
+ status->delay = status->avail + runtime->delay;
else
status->delay = 0;
}
struct snd_pcm_status __user * _status)
{
struct snd_pcm_status status;
- struct snd_pcm_runtime *runtime;
int res;
- snd_assert(substream != NULL, return -ENXIO);
- runtime = substream->runtime;
memset(&status, 0, sizeof(status));
res = snd_pcm_status(substream, &status);
if (res < 0)
struct snd_pcm_runtime *runtime;
unsigned int channel;
- snd_assert(substream != NULL, return -ENXIO);
channel = info->channel;
runtime = substream->runtime;
snd_pcm_stream_lock_irq(substream);
{
struct snd_pcm_runtime *runtime = substream->runtime;
snd_pcm_trigger_tstamp(substream);
+ runtime->hw_ptr_jiffies = jiffies;
runtime->status->state = state;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
runtime->silence_size > 0)
};
/**
- * snd_pcm_start
+ * snd_pcm_start - start all linked streams
* @substream: the PCM substream instance
- *
- * Start all linked streams.
*/
int snd_pcm_start(struct snd_pcm_substream *substream)
{
};
/**
- * snd_pcm_stop
+ * snd_pcm_stop - try to stop all running streams in the substream group
* @substream: the PCM substream instance
* @state: PCM state after stopping the stream
*
- * Try to stop all running streams in the substream group.
- * The state of each stream is changed to the given value after that unconditionally.
+ * The state of each stream is then changed to the given state unconditionally.
*/
int snd_pcm_stop(struct snd_pcm_substream *substream, int state)
{
EXPORT_SYMBOL(snd_pcm_stop);
/**
- * snd_pcm_drain_done
+ * snd_pcm_drain_done - stop the DMA only when the given stream is playback
* @substream: the PCM substream
*
- * Stop the DMA only when the given stream is playback.
- * The state is changed to SETUP.
+ * After stopping, the state is changed to SETUP.
* Unlike snd_pcm_stop(), this affects only the given stream.
*/
int snd_pcm_drain_done(struct snd_pcm_substream *substream)
{
if (substream->runtime->trigger_master != substream)
return 0;
+ /* The jiffies check in snd_pcm_update_hw_ptr*() is done by
+ * a delta betwen the current jiffies, this gives a large enough
+ * delta, effectively to skip the check once.
+ */
+ substream->runtime->hw_ptr_jiffies = jiffies - HZ * 1000;
return substream->ops->trigger(substream,
push ? SNDRV_PCM_TRIGGER_PAUSE_PUSH :
SNDRV_PCM_TRIGGER_PAUSE_RELEASE);
};
/**
- * snd_pcm_suspend
+ * snd_pcm_suspend - trigger SUSPEND to all linked streams
* @substream: the PCM substream
*
- * Trigger SUSPEND to all linked streams.
* After this call, all streams are changed to SUSPENDED state.
*/
int snd_pcm_suspend(struct snd_pcm_substream *substream)
EXPORT_SYMBOL(snd_pcm_suspend);
/**
- * snd_pcm_suspend_all
+ * snd_pcm_suspend_all - trigger SUSPEND to all substreams in the given pcm
* @pcm: the PCM instance
*
- * Trigger SUSPEND to all substreams in the given pcm.
* After this call, all streams are changed to SUSPENDED state.
*/
int snd_pcm_suspend_all(struct snd_pcm *pcm)
int err = substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_RESET, NULL);
if (err < 0)
return err;
- // snd_assert(runtime->status->hw_ptr < runtime->buffer_size, );
runtime->hw_ptr_base = 0;
runtime->hw_ptr_interrupt = runtime->status->hw_ptr -
runtime->status->hw_ptr % runtime->period_size;
};
/**
- * snd_pcm_prepare
+ * snd_pcm_prepare - prepare the PCM substream to be triggerable
* @substream: the PCM substream instance
* @file: file to refer f_flags
- *
- * Prepare the PCM substream to be triggerable.
*/
static int snd_pcm_prepare(struct snd_pcm_substream *substream,
struct file *file)
int i, num_drecs;
struct drain_rec *drec, drec_tmp, *d;
- snd_assert(substream != NULL, return -ENXIO);
card = substream->pcm->card;
runtime = substream->runtime;
struct snd_card *card;
int result = 0;
- snd_assert(substream != NULL, return -ENXIO);
+ 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)
+ runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED ||
+ runtime->status->state == SNDRV_PCM_STATE_SUSPENDED)
return -EBADFD;
- snd_power_lock(card);
- if (runtime->status->state == SNDRV_PCM_STATE_SUSPENDED) {
- result = snd_power_wait(card, SNDRV_CTL_POWER_D0);
- if (result < 0)
- goto _unlock;
- }
-
snd_pcm_stream_lock_irq(substream);
/* resume pause */
if (runtime->status->state == SNDRV_PCM_STATE_PAUSED)
snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP);
/* runtime->control->appl_ptr = runtime->status->hw_ptr; */
snd_pcm_stream_unlock_irq(substream);
- _unlock:
- snd_power_unlock(card);
+
return result;
}
mask |= 1 << SNDRV_PCM_ACCESS_MMAP_COMPLEX;
}
err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_ACCESS, mask);
- snd_assert(err >= 0, return -EINVAL);
+ if (err < 0)
+ return err;
err = snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT, hw->formats);
- snd_assert(err >= 0, return -EINVAL);
+ if (err < 0)
+ return err;
err = snd_pcm_hw_constraint_mask(runtime, SNDRV_PCM_HW_PARAM_SUBFORMAT, 1 << SNDRV_PCM_SUBFORMAT_STD);
- snd_assert(err >= 0, return -EINVAL);
+ if (err < 0)
+ return err;
err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_CHANNELS,
hw->channels_min, hw->channels_max);
- snd_assert(err >= 0, return -EINVAL);
+ if (err < 0)
+ return err;
err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_RATE,
hw->rate_min, hw->rate_max);
- snd_assert(err >= 0, return -EINVAL);
+ if (err < 0)
+ return err;
err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
hw->period_bytes_min, hw->period_bytes_max);
- snd_assert(err >= 0, return -EINVAL);
+ if (err < 0)
+ return err;
err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIODS,
hw->periods_min, hw->periods_max);
- snd_assert(err >= 0, return -EINVAL);
+ if (err < 0)
+ return err;
err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
hw->period_bytes_min, hw->buffer_bytes_max);
- snd_assert(err >= 0, return -EINVAL);
+ if (err < 0)
+ return err;
err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
snd_pcm_hw_rule_buffer_bytes_max, substream,
/* FIXME: remove */
if (runtime->dma_bytes) {
err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, runtime->dma_bytes);
- snd_assert(err >= 0, return -EINVAL);
+ if (err < 0)
+ return -EINVAL;
}
if (!(hw->rates & (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_CONTINUOUS))) {
struct snd_pcm_str *str;
int err;
- snd_assert(rpcm_file != NULL, return -EINVAL);
- *rpcm_file = NULL;
+ if (rpcm_file)
+ *rpcm_file = NULL;
err = snd_pcm_open_substream(pcm, stream, file, &substream);
if (err < 0)
substream->pcm_release = pcm_release_private;
}
file->private_data = pcm_file;
- *rpcm_file = pcm_file;
+ if (rpcm_file)
+ *rpcm_file = pcm_file;
return 0;
}
pcm_file = file->private_data;
substream = pcm_file->substream;
- snd_assert(substream != NULL, return -ENXIO);
+ if (snd_BUG_ON(!substream))
+ return -ENXIO;
pcm = substream->pcm;
- fasync_helper(-1, file, 0, &substream->runtime->fasync);
mutex_lock(&pcm->open_mutex);
snd_pcm_release_substream(substream);
kfree(pcm_file);
n = snd_pcm_playback_hw_avail(runtime);
else
n = snd_pcm_capture_avail(runtime);
+ n += runtime->delay;
break;
case SNDRV_PCM_STATE_XRUN:
err = -EPIPE;
struct snd_pcm_substream *substream,
unsigned int cmd, void __user *arg)
{
- snd_assert(substream != NULL, return -ENXIO);
-
switch (cmd) {
case SNDRV_PCM_IOCTL_PVERSION:
return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0;
struct snd_pcm_substream *substream,
unsigned int cmd, void __user *arg)
{
- snd_assert(substream != NULL, return -ENXIO);
- snd_assert(substream->stream == SNDRV_PCM_STREAM_PLAYBACK, return -EINVAL);
+ if (snd_BUG_ON(!substream))
+ return -ENXIO;
+ if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_PLAYBACK))
+ return -EINVAL;
switch (cmd) {
case SNDRV_PCM_IOCTL_WRITEI_FRAMES:
{
return -EFAULT;
if (copy_from_user(&xfern, _xfern, sizeof(xfern)))
return -EFAULT;
- bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL);
- if (bufs == NULL)
- return -ENOMEM;
- if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) {
- kfree(bufs);
- return -EFAULT;
- }
+
+ bufs = memdup_user(xfern.bufs,
+ sizeof(void *) * runtime->channels);
+ if (IS_ERR(bufs))
+ return PTR_ERR(bufs);
result = snd_pcm_lib_writev(substream, bufs, xfern.frames);
kfree(bufs);
__put_user(result, &_xfern->result);
struct snd_pcm_substream *substream,
unsigned int cmd, void __user *arg)
{
- snd_assert(substream != NULL, return -ENXIO);
- snd_assert(substream->stream == SNDRV_PCM_STREAM_CAPTURE, return -EINVAL);
+ if (snd_BUG_ON(!substream))
+ return -ENXIO;
+ if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_CAPTURE))
+ return -EINVAL;
switch (cmd) {
case SNDRV_PCM_IOCTL_READI_FRAMES:
{
return -EFAULT;
if (copy_from_user(&xfern, _xfern, sizeof(xfern)))
return -EFAULT;
- bufs = kmalloc(sizeof(void *) * runtime->channels, GFP_KERNEL);
- if (bufs == NULL)
- return -ENOMEM;
- if (copy_from_user(bufs, xfern.bufs, sizeof(void *) * runtime->channels)) {
- kfree(bufs);
- return -EFAULT;
- }
+
+ bufs = memdup_user(xfern.bufs,
+ sizeof(void *) * runtime->channels);
+ if (IS_ERR(bufs))
+ return PTR_ERR(bufs);
result = snd_pcm_lib_readv(substream, bufs, xfern.frames);
kfree(bufs);
__put_user(result, &_xfern->result);
pcm_file = file->private_data;
substream = pcm_file->substream;
- snd_assert(substream != NULL, return -ENXIO);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
return -EBADFD;
pcm_file = file->private_data;
substream = pcm_file->substream;
- snd_assert(substream != NULL, result = -ENXIO; goto end);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
- if (runtime->status->state == SNDRV_PCM_STATE_OPEN) {
- result = -EBADFD;
- goto end;
- }
- if (!frame_aligned(runtime, count)) {
- result = -EINVAL;
- goto end;
- }
+ if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
+ return -EBADFD;
+ if (!frame_aligned(runtime, count))
+ return -EINVAL;
count = bytes_to_frames(runtime, count);
result = snd_pcm_lib_write(substream, buf, count);
if (result > 0)
result = frames_to_bytes(runtime, result);
- end:
return result;
}
pcm_file = iocb->ki_filp->private_data;
substream = pcm_file->substream;
- snd_assert(substream != NULL, return -ENXIO);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
return -EBADFD;
pcm_file = iocb->ki_filp->private_data;
substream = pcm_file->substream;
- snd_assert(substream != NULL, result = -ENXIO; goto end);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
- if (runtime->status->state == SNDRV_PCM_STATE_OPEN) {
- result = -EBADFD;
- goto end;
- }
+ if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
+ return -EBADFD;
if (nr_segs > 128 || nr_segs != runtime->channels ||
- !frame_aligned(runtime, iov->iov_len)) {
- result = -EINVAL;
- goto end;
- }
+ !frame_aligned(runtime, iov->iov_len))
+ return -EINVAL;
frames = bytes_to_samples(runtime, iov->iov_len);
bufs = kmalloc(sizeof(void *) * nr_segs, GFP_KERNEL);
if (bufs == NULL)
if (result > 0)
result = frames_to_bytes(runtime, result);
kfree(bufs);
- end:
return result;
}
pcm_file = file->private_data;
substream = pcm_file->substream;
- snd_assert(substream != NULL, return -ENXIO);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
poll_wait(file, &runtime->sleep, wait);
pcm_file = file->private_data;
substream = pcm_file->substream;
- snd_assert(substream != NULL, return -ENXIO);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
runtime = substream->runtime;
poll_wait(file, &runtime->sleep, wait);
if (!(area->vm_flags & VM_READ))
return -EINVAL;
runtime = substream->runtime;
- snd_assert(runtime != NULL, return -EAGAIN);
size = area->vm_end - area->vm_start;
if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status)))
return -EINVAL;
if (!(area->vm_flags & VM_READ))
return -EINVAL;
runtime = substream->runtime;
- snd_assert(runtime != NULL, return -EAGAIN);
size = area->vm_end - area->vm_start;
if (size != PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control)))
return -EINVAL;
return -EINVAL;
}
runtime = substream->runtime;
- snd_assert(runtime != NULL, return -EAGAIN);
if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
return -EBADFD;
if (!(runtime->info & SNDRV_PCM_INFO_MMAP))
pcm_file = file->private_data;
substream = pcm_file->substream;
- snd_assert(substream != NULL, return -ENXIO);
+ if (PCM_RUNTIME_CHECK(substream))
+ return -ENXIO;
offset = area->vm_pgoff << PAGE_SHIFT;
switch (offset) {
struct snd_pcm_file * pcm_file;
struct snd_pcm_substream *substream;
struct snd_pcm_runtime *runtime;
- int err;
+ int err = -ENXIO;
+ lock_kernel();
pcm_file = file->private_data;
substream = pcm_file->substream;
- snd_assert(substream != NULL, return -ENXIO);
+ if (PCM_RUNTIME_CHECK(substream))
+ goto out;
runtime = substream->runtime;
-
err = fasync_helper(fd, file, on, &runtime->fasync);
- if (err < 0)
- return err;
- return 0;
+out:
+ unlock_kernel();
+ return err;
}
/*
int err;
params = kmalloc(sizeof(*params), GFP_KERNEL);
- if (!params) {
- err = -ENOMEM;
- goto out;
- }
- oparams = kmalloc(sizeof(*oparams), GFP_KERNEL);
- if (!oparams) {
- err = -ENOMEM;
- goto out;
- }
+ if (!params)
+ return -ENOMEM;
- if (copy_from_user(oparams, _oparams, sizeof(*oparams))) {
- err = -EFAULT;
+ oparams = memdup_user(_oparams, sizeof(*oparams));
+ if (IS_ERR(oparams)) {
+ err = PTR_ERR(oparams);
goto out;
}
snd_pcm_hw_convert_from_old_params(params, oparams);
if (!err)
err = -EFAULT;
}
+
+ kfree(oparams);
out:
kfree(params);
- kfree(oparams);
return err;
}
int err;
params = kmalloc(sizeof(*params), GFP_KERNEL);
- if (!params) {
- err = -ENOMEM;
- goto out;
- }
- oparams = kmalloc(sizeof(*oparams), GFP_KERNEL);
- if (!oparams) {
- err = -ENOMEM;
- goto out;
- }
- if (copy_from_user(oparams, _oparams, sizeof(*oparams))) {
- err = -EFAULT;
+ if (!params)
+ return -ENOMEM;
+
+ oparams = memdup_user(_oparams, sizeof(*oparams));
+ if (IS_ERR(oparams)) {
+ err = PTR_ERR(oparams);
goto out;
}
snd_pcm_hw_convert_from_old_params(params, oparams);
if (!err)
err = -EFAULT;
}
+
+ kfree(oparams);
out:
kfree(params);
- kfree(oparams);
return err;
}
#endif /* CONFIG_SND_SUPPORT_OLD_API */
+#ifndef CONFIG_MMU
+unsigned long dummy_get_unmapped_area(struct file *file, unsigned long addr,
+ unsigned long len, unsigned long pgoff,
+ unsigned long flags)
+{
+ return 0;
+}
+#else
+# define dummy_get_unmapped_area NULL
+#endif
+
/*
* Register section
*/
.compat_ioctl = snd_pcm_ioctl_compat,
.mmap = snd_pcm_mmap,
.fasync = snd_pcm_fasync,
+ .get_unmapped_area = dummy_get_unmapped_area,
},
{
.owner = THIS_MODULE,
.compat_ioctl = snd_pcm_ioctl_compat,
.mmap = snd_pcm_mmap,
.fasync = snd_pcm_fasync,
+ .get_unmapped_area = dummy_get_unmapped_area,
}
};
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff