#include <sound/minors.h>
#include <linux/uio.h>
+#include "pcm_local.h"
+
+#ifdef CONFIG_SND_DEBUG
+#define CREATE_TRACE_POINTS
+#include "pcm_param_trace.h"
+#else
+#define trace_hw_mask_param_enabled() 0
+#define trace_hw_interval_param_enabled() 0
+#define trace_hw_mask_param(substream, type, index, prev, curr)
+#define trace_hw_interval_param(substream, type, index, prev, curr)
+#endif
+
/*
* Compatibility
*/
}
EXPORT_SYMBOL_GPL(snd_pcm_stream_unlock_irqrestore);
-static inline mm_segment_t snd_enter_user(void)
-{
- mm_segment_t fs = get_fs();
- set_fs(get_ds());
- return fs;
-}
-
-static inline void snd_leave_user(mm_segment_t fs)
-{
- set_fs(fs);
-}
-
-
-
int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info)
{
struct snd_pcm_runtime *runtime;
info->subdevices_avail = pstr->substream_count - pstr->substream_opened;
strlcpy(info->subname, substream->name, sizeof(info->subname));
runtime = substream->runtime;
- /* AB: FIXME!!! This is definitely nonsense */
- if (runtime) {
- info->sync = runtime->sync;
- substream->ops->ioctl(substream, SNDRV_PCM_IOCTL1_INFO, info);
- }
+
return 0;
}
{
if (!(substream->runtime->hw.info & SNDRV_PCM_INFO_MMAP))
return false;
- /* check architectures that return -EINVAL from dma_mmap_coherent() */
- /* FIXME: this should be some global flag */
-#if defined(CONFIG_C6X) || defined(CONFIG_FRV) || defined(CONFIG_MN10300) ||\
- defined(CONFIG_PARISC) || defined(CONFIG_XTENSA)
+ /* architecture supports dma_mmap_coherent()? */
+#if defined(CONFIG_ARCH_NO_COHERENT_DMA_MMAP) || !defined(CONFIG_HAS_DMA)
if (!substream->ops->mmap &&
substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV)
return false;
return true;
}
-#undef RULES_DEBUG
-
-#ifdef RULES_DEBUG
-#define HW_PARAM(v) [SNDRV_PCM_HW_PARAM_##v] = #v
-static const char * const snd_pcm_hw_param_names[] = {
- HW_PARAM(ACCESS),
- HW_PARAM(FORMAT),
- HW_PARAM(SUBFORMAT),
- HW_PARAM(SAMPLE_BITS),
- HW_PARAM(FRAME_BITS),
- HW_PARAM(CHANNELS),
- HW_PARAM(RATE),
- HW_PARAM(PERIOD_TIME),
- HW_PARAM(PERIOD_SIZE),
- HW_PARAM(PERIOD_BYTES),
- HW_PARAM(PERIODS),
- HW_PARAM(BUFFER_TIME),
- HW_PARAM(BUFFER_SIZE),
- HW_PARAM(BUFFER_BYTES),
- HW_PARAM(TICK_TIME),
-};
-#endif
-
-int snd_pcm_hw_refine(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
+static int constrain_mask_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
{
+ struct snd_pcm_hw_constraints *constrs =
+ &substream->runtime->hw_constraints;
+ struct snd_mask *m;
unsigned int k;
- struct snd_pcm_hardware *hw;
- struct snd_interval *i = NULL;
- struct snd_mask *m = NULL;
- struct snd_pcm_hw_constraints *constrs = &substream->runtime->hw_constraints;
- unsigned int rstamps[constrs->rules_num];
- unsigned int vstamps[SNDRV_PCM_HW_PARAM_LAST_INTERVAL + 1];
- unsigned int stamp = 2;
- int changed, again;
-
- params->info = 0;
- params->fifo_size = 0;
- if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_SAMPLE_BITS))
- params->msbits = 0;
- if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_RATE)) {
- params->rate_num = 0;
- params->rate_den = 0;
- }
+ struct snd_mask old_mask;
+ int changed;
for (k = SNDRV_PCM_HW_PARAM_FIRST_MASK; k <= SNDRV_PCM_HW_PARAM_LAST_MASK; k++) {
m = hw_param_mask(params, k);
if (snd_mask_empty(m))
return -EINVAL;
+
+ /* This parameter is not requested to change by a caller. */
if (!(params->rmask & (1 << k)))
continue;
-#ifdef RULES_DEBUG
- pr_debug("%s = ", snd_pcm_hw_param_names[k]);
- pr_cont("%04x%04x%04x%04x -> ", m->bits[3], m->bits[2], m->bits[1], m->bits[0]);
-#endif
+
+ if (trace_hw_mask_param_enabled())
+ old_mask = *m;
+
changed = snd_mask_refine(m, constrs_mask(constrs, k));
-#ifdef RULES_DEBUG
- pr_cont("%04x%04x%04x%04x\n", m->bits[3], m->bits[2], m->bits[1], m->bits[0]);
-#endif
- if (changed)
- params->cmask |= 1 << k;
if (changed < 0)
return changed;
+ if (changed == 0)
+ continue;
+
+ /* Set corresponding flag so that the caller gets it. */
+ trace_hw_mask_param(substream, k, 0, &old_mask, m);
+ params->cmask |= 1 << k;
}
+ return 0;
+}
+
+static int constrain_interval_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_pcm_hw_constraints *constrs =
+ &substream->runtime->hw_constraints;
+ struct snd_interval *i;
+ unsigned int k;
+ struct snd_interval old_interval;
+ int changed;
+
for (k = SNDRV_PCM_HW_PARAM_FIRST_INTERVAL; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++) {
i = hw_param_interval(params, k);
if (snd_interval_empty(i))
return -EINVAL;
+
+ /* This parameter is not requested to change by a caller. */
if (!(params->rmask & (1 << k)))
continue;
-#ifdef RULES_DEBUG
- pr_debug("%s = ", snd_pcm_hw_param_names[k]);
- if (i->empty)
- pr_cont("empty");
- else
- pr_cont("%c%u %u%c",
- i->openmin ? '(' : '[', i->min,
- i->max, i->openmax ? ')' : ']');
- pr_cont(" -> ");
-#endif
+
+ if (trace_hw_interval_param_enabled())
+ old_interval = *i;
+
changed = snd_interval_refine(i, constrs_interval(constrs, k));
-#ifdef RULES_DEBUG
- if (i->empty)
- pr_cont("empty\n");
- else
- pr_cont("%c%u %u%c\n",
- i->openmin ? '(' : '[', i->min,
- i->max, i->openmax ? ')' : ']');
-#endif
- if (changed)
- params->cmask |= 1 << k;
if (changed < 0)
return changed;
+ if (changed == 0)
+ continue;
+
+ /* Set corresponding flag so that the caller gets it. */
+ trace_hw_interval_param(substream, k, 0, &old_interval, i);
+ params->cmask |= 1 << k;
}
+ return 0;
+}
+
+static int constrain_params_by_rules(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_pcm_hw_constraints *constrs =
+ &substream->runtime->hw_constraints;
+ unsigned int k;
+ unsigned int rstamps[constrs->rules_num];
+ unsigned int vstamps[SNDRV_PCM_HW_PARAM_LAST_INTERVAL + 1];
+ unsigned int stamp;
+ struct snd_pcm_hw_rule *r;
+ unsigned int d;
+ struct snd_mask old_mask;
+ struct snd_interval old_interval;
+ bool again;
+ int changed;
+
+ /*
+ * Each application of rule has own sequence number.
+ *
+ * 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;
- for (k = 0; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++)
+
+ /*
+ * Each member of 'vstamps' array represents the sequence number of
+ * recent application of rule in which corresponding parameters were
+ * changed.
+ *
+ * In initial state, elements corresponding to parameters requested by
+ * a caller is 1. For unrequested parameters, corresponding members
+ * have 0 so that the parameters are never changed anymore.
+ */
+ for (k = 0; k <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; k++)
vstamps[k] = (params->rmask & (1 << k)) ? 1 : 0;
- do {
- again = 0;
- for (k = 0; k < constrs->rules_num; k++) {
- struct snd_pcm_hw_rule *r = &constrs->rules[k];
- unsigned int d;
- int doit = 0;
- if (r->cond && !(r->cond & params->flags))
- continue;
- for (d = 0; r->deps[d] >= 0; d++) {
- if (vstamps[r->deps[d]] > rstamps[k]) {
- doit = 1;
- break;
- }
- }
- if (!doit)
- continue;
-#ifdef RULES_DEBUG
- pr_debug("Rule %d [%p]: ", k, r->func);
- if (r->var >= 0) {
- pr_cont("%s = ", snd_pcm_hw_param_names[r->var]);
- if (hw_is_mask(r->var)) {
- m = hw_param_mask(params, r->var);
- pr_cont("%x", *m->bits);
- } else {
- i = hw_param_interval(params, r->var);
- if (i->empty)
- pr_cont("empty");
- else
- pr_cont("%c%u %u%c",
- i->openmin ? '(' : '[', i->min,
- i->max, i->openmax ? ')' : ']');
- }
- }
-#endif
- changed = r->func(params, r);
-#ifdef RULES_DEBUG
- if (r->var >= 0) {
- pr_cont(" -> ");
- if (hw_is_mask(r->var))
- pr_cont("%x", *m->bits);
- else {
- if (i->empty)
- pr_cont("empty");
- else
- pr_cont("%c%u %u%c",
- i->openmin ? '(' : '[', i->min,
- i->max, i->openmax ? ')' : ']');
- }
+
+ /* Due to the above design, actual sequence number starts at 2. */
+ stamp = 2;
+retry:
+ /* Apply all rules in order. */
+ again = false;
+ for (k = 0; k < constrs->rules_num; k++) {
+ r = &constrs->rules[k];
+
+ /*
+ * Check condition bits of this rule. When the rule has
+ * some condition bits, parameter without the bits is
+ * never processed. SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP
+ * is an example of the condition bits.
+ */
+ if (r->cond && !(r->cond & params->flags))
+ continue;
+
+ /*
+ * The 'deps' array includes maximum three dependencies
+ * to SNDRV_PCM_HW_PARAM_XXXs for this rule. The fourth
+ * member of this array is a sentinel and should be
+ * negative value.
+ *
+ * This rule should be processed in this time when dependent
+ * parameters were changed at former applications of the other
+ * rules.
+ */
+ for (d = 0; r->deps[d] >= 0; d++) {
+ if (vstamps[r->deps[d]] > rstamps[k])
+ break;
+ }
+ if (r->deps[d] < 0)
+ continue;
+
+ if (trace_hw_mask_param_enabled()) {
+ if (hw_is_mask(r->var))
+ old_mask = *hw_param_mask(params, r->var);
+ }
+ if (trace_hw_interval_param_enabled()) {
+ if (hw_is_interval(r->var))
+ old_interval = *hw_param_interval(params, r->var);
+ }
+
+ changed = r->func(params, r);
+ if (changed < 0)
+ return changed;
+
+ /*
+ * When the parameter is changed, notify it to the caller
+ * by corresponding returned bit, then preparing for next
+ * iteration.
+ */
+ if (changed && r->var >= 0) {
+ if (hw_is_mask(r->var)) {
+ trace_hw_mask_param(substream, r->var,
+ k + 1, &old_mask,
+ hw_param_mask(params, r->var));
}
- pr_cont("\n");
-#endif
- rstamps[k] = stamp;
- if (changed && r->var >= 0) {
- params->cmask |= (1 << r->var);
- vstamps[r->var] = stamp;
- again = 1;
+ if (hw_is_interval(r->var)) {
+ trace_hw_interval_param(substream, r->var,
+ k + 1, &old_interval,
+ hw_param_interval(params, r->var));
}
- if (changed < 0)
- return changed;
- stamp++;
+
+ params->cmask |= (1 << r->var);
+ vstamps[r->var] = stamp;
+ again = true;
}
- } while (again);
+
+ rstamps[k] = stamp++;
+ }
+
+ /* Iterate to evaluate all rules till no parameters are changed. */
+ if (again)
+ goto retry;
+
+ return 0;
+}
+
+static int fixup_unreferenced_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ const struct snd_interval *i;
+ const struct snd_mask *m;
+ int err;
+
if (!params->msbits) {
- i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS);
+ i = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS);
if (snd_interval_single(i))
params->msbits = snd_interval_value(i);
}
if (!params->rate_den) {
- i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+ i = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE);
if (snd_interval_single(i)) {
params->rate_num = snd_interval_value(i);
params->rate_den = 1;
}
}
- hw = &substream->runtime->hw;
+ if (!params->fifo_size) {
+ m = hw_param_mask_c(params, SNDRV_PCM_HW_PARAM_FORMAT);
+ i = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+ if (snd_mask_single(m) && snd_interval_single(i)) {
+ err = substream->ops->ioctl(substream,
+ SNDRV_PCM_IOCTL1_FIFO_SIZE, params);
+ if (err < 0)
+ return err;
+ }
+ }
+
if (!params->info) {
- params->info = hw->info & ~(SNDRV_PCM_INFO_FIFO_IN_FRAMES |
- SNDRV_PCM_INFO_DRAIN_TRIGGER);
+ params->info = substream->runtime->hw.info;
+ params->info &= ~(SNDRV_PCM_INFO_FIFO_IN_FRAMES |
+ SNDRV_PCM_INFO_DRAIN_TRIGGER);
if (!hw_support_mmap(substream))
params->info &= ~(SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_MMAP_VALID);
}
- if (!params->fifo_size) {
- m = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
- i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
- if (snd_mask_min(m) == snd_mask_max(m) &&
- snd_interval_min(i) == snd_interval_max(i)) {
- changed = substream->ops->ioctl(substream,
- SNDRV_PCM_IOCTL1_FIFO_SIZE, params);
- if (changed < 0)
- return changed;
- }
+
+ return 0;
+}
+
+int snd_pcm_hw_refine(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ int err;
+
+ params->info = 0;
+ params->fifo_size = 0;
+ if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_SAMPLE_BITS))
+ params->msbits = 0;
+ if (params->rmask & (1 << SNDRV_PCM_HW_PARAM_RATE)) {
+ params->rate_num = 0;
+ params->rate_den = 0;
}
+
+ err = constrain_mask_params(substream, params);
+ if (err < 0)
+ return err;
+
+ err = constrain_interval_params(substream, params);
+ if (err < 0)
+ return err;
+
+ err = constrain_params_by_rules(substream, params);
+ if (err < 0)
+ return err;
+
params->rmask = 0;
+
return 0;
}
-
EXPORT_SYMBOL(snd_pcm_hw_refine);
static int snd_pcm_hw_refine_user(struct snd_pcm_substream *substream,
return PTR_ERR(params);
err = snd_pcm_hw_refine(substream, params);
- if (copy_to_user(_params, params, sizeof(*params))) {
- if (!err)
- err = -EFAULT;
- }
+ if (err < 0)
+ goto end;
+
+ err = fixup_unreferenced_params(substream, params);
+ if (err < 0)
+ goto end;
+ if (copy_to_user(_params, params, sizeof(*params)))
+ err = -EFAULT;
+end:
kfree(params);
return err;
}
#endif
}
+/**
+ * snd_pcm_hw_param_choose - choose a configuration defined by @params
+ * @pcm: PCM instance
+ * @params: the hw_params instance
+ *
+ * Choose one configuration from configuration space defined by @params.
+ * The configuration chosen is that obtained fixing in this order:
+ * first access, first format, first subformat, min channels,
+ * min rate, min period time, max buffer size, min tick time
+ *
+ * Return: Zero if successful, or a negative error code on failure.
+ */
+static int snd_pcm_hw_params_choose(struct snd_pcm_substream *pcm,
+ struct snd_pcm_hw_params *params)
+{
+ static const int vars[] = {
+ SNDRV_PCM_HW_PARAM_ACCESS,
+ SNDRV_PCM_HW_PARAM_FORMAT,
+ SNDRV_PCM_HW_PARAM_SUBFORMAT,
+ SNDRV_PCM_HW_PARAM_CHANNELS,
+ SNDRV_PCM_HW_PARAM_RATE,
+ SNDRV_PCM_HW_PARAM_PERIOD_TIME,
+ SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
+ SNDRV_PCM_HW_PARAM_TICK_TIME,
+ -1
+ };
+ const int *v;
+ struct snd_mask old_mask;
+ struct snd_interval old_interval;
+ int changed;
+
+ for (v = vars; *v != -1; v++) {
+ /* Keep old parameter to trace. */
+ if (trace_hw_mask_param_enabled()) {
+ if (hw_is_mask(*v))
+ old_mask = *hw_param_mask(params, *v);
+ }
+ if (trace_hw_interval_param_enabled()) {
+ if (hw_is_interval(*v))
+ old_interval = *hw_param_interval(params, *v);
+ }
+ if (*v != SNDRV_PCM_HW_PARAM_BUFFER_SIZE)
+ changed = snd_pcm_hw_param_first(pcm, params, *v, NULL);
+ else
+ changed = snd_pcm_hw_param_last(pcm, params, *v, NULL);
+ if (snd_BUG_ON(changed < 0))
+ return changed;
+ if (changed == 0)
+ continue;
+
+ /* Trace the changed parameter. */
+ if (hw_is_mask(*v)) {
+ trace_hw_mask_param(pcm, *v, 0, &old_mask,
+ hw_param_mask(params, *v));
+ }
+ if (hw_is_interval(*v)) {
+ trace_hw_interval_param(pcm, *v, 0, &old_interval,
+ hw_param_interval(params, *v));
+ }
+ }
+
+ return 0;
+}
+
static int snd_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
if (err < 0)
goto _error;
+ err = fixup_unreferenced_params(substream, params);
+ if (err < 0)
+ goto _error;
+
if (substream->ops->hw_params != NULL) {
err = substream->ops->hw_params(substream, params);
if (err < 0)
return PTR_ERR(params);
err = snd_pcm_hw_params(substream, params);
- if (copy_to_user(_params, params, sizeof(*params))) {
- if (!err)
- err = -EFAULT;
- }
+ if (err < 0)
+ goto end;
+ if (copy_to_user(_params, params, sizeof(*params)))
+ err = -EFAULT;
+end:
kfree(params);
return err;
}
* @substream: the PCM substream instance
*
* Return: Zero if successful, or a negative error code.
+ * The stream lock must be acquired before calling this function.
*/
int snd_pcm_start(struct snd_pcm_substream *substream)
{
SNDRV_PCM_STATE_RUNNING);
}
+/* take the stream lock and start the streams */
+static int snd_pcm_start_lock_irq(struct snd_pcm_substream *substream)
+{
+ return snd_pcm_action_lock_irq(&snd_pcm_action_start, substream,
+ SNDRV_PCM_STATE_RUNNING);
+}
+
/*
* stop callbacks
*/
{
return snd_pcm_action(&snd_pcm_action_stop, substream, state);
}
-
EXPORT_SYMBOL(snd_pcm_stop);
/**
snd_pcm_stream_unlock_irqrestore(substream, flags);
return err;
}
-
EXPORT_SYMBOL(snd_pcm_suspend);
/**
}
return 0;
}
-
EXPORT_SYMBOL(snd_pcm_suspend_all);
/* resume */
static int snd_pcm_resume(struct snd_pcm_substream *substream)
{
- struct snd_card *card = substream->pcm->card;
- int res;
-
- snd_power_lock(card);
- if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0)
- res = snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, 0);
- snd_power_unlock(card);
- return res;
+ return snd_pcm_action_lock_irq(&snd_pcm_action_resume, substream, 0);
}
#else
*/
static int snd_pcm_xrun(struct snd_pcm_substream *substream)
{
- struct snd_card *card = substream->pcm->card;
struct snd_pcm_runtime *runtime = substream->runtime;
int result;
- 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);
switch (runtime->status->state) {
case SNDRV_PCM_STATE_XRUN:
result = -EBADFD;
}
snd_pcm_stream_unlock_irq(substream);
- _unlock:
- snd_power_unlock(card);
return result;
}
static int snd_pcm_prepare(struct snd_pcm_substream *substream,
struct file *file)
{
- int res;
- struct snd_card *card = substream->pcm->card;
int f_flags;
if (file)
else
f_flags = substream->f_flags;
- snd_power_lock(card);
- if ((res = snd_power_wait(card, SNDRV_CTL_POWER_D0)) >= 0)
- res = snd_pcm_action_nonatomic(&snd_pcm_action_prepare,
- substream, f_flags);
- snd_power_unlock(card);
- return res;
+ snd_pcm_stream_lock_irq(substream);
+ switch (substream->runtime->status->state) {
+ case SNDRV_PCM_STATE_PAUSED:
+ snd_pcm_pause(substream, 0);
+ /* fallthru */
+ case SNDRV_PCM_STATE_SUSPENDED:
+ snd_pcm_stop(substream, SNDRV_PCM_STATE_SETUP);
+ break;
+ }
+ snd_pcm_stream_unlock_irq(substream);
+
+ return snd_pcm_action_nonatomic(&snd_pcm_action_prepare,
+ substream, f_flags);
}
/*
if (runtime->status->state == SNDRV_PCM_STATE_OPEN)
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) {
- snd_power_unlock(card);
- return result;
- }
- }
-
if (file) {
if (file->f_flags & O_NONBLOCK)
nonblock = 1;
unlock:
snd_pcm_stream_unlock_irq(substream);
up_read(&snd_pcm_link_rwsem);
- snd_power_unlock(card);
return result;
}
runtime = substream->runtime;
if (runtime->status->state == SNDRV_PCM_STATE_OPEN ||
- runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED ||
- runtime->status->state == SNDRV_PCM_STATE_SUSPENDED)
+ runtime->status->state == SNDRV_PCM_STATE_DISCONNECTED)
return -EBADFD;
snd_pcm_stream_lock_irq(substream);
struct snd_pcm_hw_rule *rule)
{
unsigned int k;
- struct snd_interval *i = hw_param_interval(params, rule->deps[0]);
+ const struct snd_interval *i =
+ hw_param_interval_c(params, rule->deps[0]);
struct snd_mask m;
struct snd_mask *mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
snd_mask_any(&m);
#error "Change this table"
#endif
-static unsigned int rates[] = { 5512, 8000, 11025, 16000, 22050, 32000, 44100,
- 48000, 64000, 88200, 96000, 176400, 192000 };
+static const unsigned int rates[] = {
+ 5512, 8000, 11025, 16000, 22050, 32000, 44100,
+ 48000, 64000, 88200, 96000, 176400, 192000
+};
const struct snd_pcm_hw_constraint_list snd_pcm_known_rates = {
.count = ARRAY_SIZE(rates),
}
snd_pcm_detach_substream(substream);
}
-
EXPORT_SYMBOL(snd_pcm_release_substream);
int snd_pcm_open_substream(struct snd_pcm *pcm, int stream,
snd_pcm_release_substream(substream);
return err;
}
-
EXPORT_SYMBOL(snd_pcm_open_substream);
static int snd_pcm_open_file(struct file *file,
return 0;
}
-static snd_pcm_sframes_t snd_pcm_playback_rewind(struct snd_pcm_substream *substream,
- snd_pcm_uframes_t frames)
+/* check and update PCM state; return 0 or a negative error
+ * call this inside PCM lock
+ */
+static int do_pcm_hwsync(struct snd_pcm_substream *substream)
{
- struct snd_pcm_runtime *runtime = substream->runtime;
- snd_pcm_sframes_t appl_ptr;
- snd_pcm_sframes_t ret;
- snd_pcm_sframes_t hw_avail;
-
- if (frames == 0)
- return 0;
-
- snd_pcm_stream_lock_irq(substream);
- switch (runtime->status->state) {
- case SNDRV_PCM_STATE_PREPARED:
- break;
+ switch (substream->runtime->status->state) {
case SNDRV_PCM_STATE_DRAINING:
- case SNDRV_PCM_STATE_RUNNING:
- if (snd_pcm_update_hw_ptr(substream) >= 0)
- break;
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+ return -EBADFD;
/* Fall through */
- case SNDRV_PCM_STATE_XRUN:
- ret = -EPIPE;
- goto __end;
+ case SNDRV_PCM_STATE_RUNNING:
+ return snd_pcm_update_hw_ptr(substream);
+ case SNDRV_PCM_STATE_PREPARED:
+ case SNDRV_PCM_STATE_PAUSED:
+ return 0;
case SNDRV_PCM_STATE_SUSPENDED:
- ret = -ESTRPIPE;
- goto __end;
+ return -ESTRPIPE;
+ case SNDRV_PCM_STATE_XRUN:
+ return -EPIPE;
default:
- ret = -EBADFD;
- goto __end;
+ return -EBADFD;
}
+}
- hw_avail = snd_pcm_playback_hw_avail(runtime);
- if (hw_avail <= 0) {
- ret = 0;
- goto __end;
- }
- if (frames > (snd_pcm_uframes_t)hw_avail)
- frames = hw_avail;
+/* increase the appl_ptr; returns the processed frames or a negative error */
+static snd_pcm_sframes_t forward_appl_ptr(struct snd_pcm_substream *substream,
+ snd_pcm_uframes_t frames,
+ snd_pcm_sframes_t avail)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ snd_pcm_sframes_t appl_ptr;
+ int ret;
+
+ if (avail <= 0)
+ return 0;
+ if (frames > (snd_pcm_uframes_t)avail)
+ frames = avail;
+ appl_ptr = runtime->control->appl_ptr + frames;
+ if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary)
+ appl_ptr -= runtime->boundary;
+ ret = pcm_lib_apply_appl_ptr(substream, appl_ptr);
+ return ret < 0 ? ret : frames;
+}
+
+/* decrease the appl_ptr; returns the processed frames or a negative error */
+static snd_pcm_sframes_t rewind_appl_ptr(struct snd_pcm_substream *substream,
+ snd_pcm_uframes_t frames,
+ snd_pcm_sframes_t avail)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ snd_pcm_sframes_t appl_ptr;
+ int ret;
+
+ if (avail <= 0)
+ return 0;
+ if (frames > (snd_pcm_uframes_t)avail)
+ frames = avail;
appl_ptr = runtime->control->appl_ptr - frames;
if (appl_ptr < 0)
appl_ptr += runtime->boundary;
- runtime->control->appl_ptr = appl_ptr;
- ret = frames;
- __end:
+ ret = pcm_lib_apply_appl_ptr(substream, appl_ptr);
+ return ret < 0 ? ret : frames;
+}
+
+static snd_pcm_sframes_t snd_pcm_playback_rewind(struct snd_pcm_substream *substream,
+ snd_pcm_uframes_t frames)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ snd_pcm_sframes_t ret;
+
+ if (frames == 0)
+ return 0;
+
+ snd_pcm_stream_lock_irq(substream);
+ ret = do_pcm_hwsync(substream);
+ if (!ret)
+ ret = rewind_appl_ptr(substream, frames,
+ snd_pcm_playback_hw_avail(runtime));
snd_pcm_stream_unlock_irq(substream);
return ret;
}
snd_pcm_uframes_t frames)
{
struct snd_pcm_runtime *runtime = substream->runtime;
- snd_pcm_sframes_t appl_ptr;
snd_pcm_sframes_t ret;
- snd_pcm_sframes_t hw_avail;
if (frames == 0)
return 0;
snd_pcm_stream_lock_irq(substream);
- switch (runtime->status->state) {
- case SNDRV_PCM_STATE_PREPARED:
- case SNDRV_PCM_STATE_DRAINING:
- break;
- case SNDRV_PCM_STATE_RUNNING:
- if (snd_pcm_update_hw_ptr(substream) >= 0)
- break;
- /* Fall through */
- case SNDRV_PCM_STATE_XRUN:
- ret = -EPIPE;
- goto __end;
- case SNDRV_PCM_STATE_SUSPENDED:
- ret = -ESTRPIPE;
- goto __end;
- default:
- ret = -EBADFD;
- goto __end;
- }
-
- hw_avail = snd_pcm_capture_hw_avail(runtime);
- if (hw_avail <= 0) {
- ret = 0;
- goto __end;
- }
- if (frames > (snd_pcm_uframes_t)hw_avail)
- frames = hw_avail;
- appl_ptr = runtime->control->appl_ptr - frames;
- if (appl_ptr < 0)
- appl_ptr += runtime->boundary;
- runtime->control->appl_ptr = appl_ptr;
- ret = frames;
- __end:
+ ret = do_pcm_hwsync(substream);
+ if (!ret)
+ ret = rewind_appl_ptr(substream, frames,
+ snd_pcm_capture_hw_avail(runtime));
snd_pcm_stream_unlock_irq(substream);
return ret;
}
snd_pcm_uframes_t frames)
{
struct snd_pcm_runtime *runtime = substream->runtime;
- snd_pcm_sframes_t appl_ptr;
snd_pcm_sframes_t ret;
- snd_pcm_sframes_t avail;
if (frames == 0)
return 0;
snd_pcm_stream_lock_irq(substream);
- switch (runtime->status->state) {
- case SNDRV_PCM_STATE_PREPARED:
- case SNDRV_PCM_STATE_PAUSED:
- break;
- case SNDRV_PCM_STATE_DRAINING:
- case SNDRV_PCM_STATE_RUNNING:
- if (snd_pcm_update_hw_ptr(substream) >= 0)
- break;
- /* Fall through */
- case SNDRV_PCM_STATE_XRUN:
- ret = -EPIPE;
- goto __end;
- case SNDRV_PCM_STATE_SUSPENDED:
- ret = -ESTRPIPE;
- goto __end;
- default:
- ret = -EBADFD;
- goto __end;
- }
-
- avail = snd_pcm_playback_avail(runtime);
- if (avail <= 0) {
- ret = 0;
- goto __end;
- }
- if (frames > (snd_pcm_uframes_t)avail)
- frames = avail;
- appl_ptr = runtime->control->appl_ptr + frames;
- if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary)
- appl_ptr -= runtime->boundary;
- runtime->control->appl_ptr = appl_ptr;
- ret = frames;
- __end:
+ ret = do_pcm_hwsync(substream);
+ if (!ret)
+ ret = forward_appl_ptr(substream, frames,
+ snd_pcm_playback_avail(runtime));
snd_pcm_stream_unlock_irq(substream);
return ret;
}
snd_pcm_uframes_t frames)
{
struct snd_pcm_runtime *runtime = substream->runtime;
- snd_pcm_sframes_t appl_ptr;
snd_pcm_sframes_t ret;
- snd_pcm_sframes_t avail;
if (frames == 0)
return 0;
snd_pcm_stream_lock_irq(substream);
- switch (runtime->status->state) {
- case SNDRV_PCM_STATE_PREPARED:
- case SNDRV_PCM_STATE_DRAINING:
- case SNDRV_PCM_STATE_PAUSED:
- break;
- case SNDRV_PCM_STATE_RUNNING:
- if (snd_pcm_update_hw_ptr(substream) >= 0)
- break;
- /* Fall through */
- case SNDRV_PCM_STATE_XRUN:
- ret = -EPIPE;
- goto __end;
- case SNDRV_PCM_STATE_SUSPENDED:
- ret = -ESTRPIPE;
- goto __end;
- default:
- ret = -EBADFD;
- goto __end;
- }
-
- avail = snd_pcm_capture_avail(runtime);
- if (avail <= 0) {
- ret = 0;
- goto __end;
- }
- if (frames > (snd_pcm_uframes_t)avail)
- frames = avail;
- appl_ptr = runtime->control->appl_ptr + frames;
- if (appl_ptr >= (snd_pcm_sframes_t)runtime->boundary)
- appl_ptr -= runtime->boundary;
- runtime->control->appl_ptr = appl_ptr;
- ret = frames;
- __end:
+ ret = do_pcm_hwsync(substream);
+ if (!ret)
+ ret = forward_appl_ptr(substream, frames,
+ snd_pcm_capture_avail(runtime));
snd_pcm_stream_unlock_irq(substream);
return ret;
}
static int snd_pcm_hwsync(struct snd_pcm_substream *substream)
{
- struct snd_pcm_runtime *runtime = substream->runtime;
int err;
snd_pcm_stream_lock_irq(substream);
- switch (runtime->status->state) {
- case SNDRV_PCM_STATE_DRAINING:
- if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
- goto __badfd;
- /* Fall through */
- case SNDRV_PCM_STATE_RUNNING:
- if ((err = snd_pcm_update_hw_ptr(substream)) < 0)
- break;
- /* Fall through */
- case SNDRV_PCM_STATE_PREPARED:
- err = 0;
- break;
- case SNDRV_PCM_STATE_SUSPENDED:
- err = -ESTRPIPE;
- break;
- case SNDRV_PCM_STATE_XRUN:
- err = -EPIPE;
- break;
- default:
- __badfd:
- err = -EBADFD;
- break;
- }
+ err = do_pcm_hwsync(substream);
snd_pcm_stream_unlock_irq(substream);
return err;
}
-static int snd_pcm_delay(struct snd_pcm_substream *substream,
- snd_pcm_sframes_t __user *res)
+static snd_pcm_sframes_t snd_pcm_delay(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
snd_pcm_sframes_t n = 0;
snd_pcm_stream_lock_irq(substream);
- switch (runtime->status->state) {
- case SNDRV_PCM_STATE_DRAINING:
- if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
- goto __badfd;
- /* Fall through */
- case SNDRV_PCM_STATE_RUNNING:
- if ((err = snd_pcm_update_hw_ptr(substream)) < 0)
- break;
- /* Fall through */
- case SNDRV_PCM_STATE_PREPARED:
- case SNDRV_PCM_STATE_SUSPENDED:
- err = 0;
+ err = do_pcm_hwsync(substream);
+ if (!err) {
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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;
- break;
- default:
- __badfd:
- err = -EBADFD;
- break;
}
snd_pcm_stream_unlock_irq(substream);
- if (!err)
- if (put_user(n, res))
- err = -EFAULT;
- return err;
+ return err < 0 ? err : n;
}
static int snd_pcm_sync_ptr(struct snd_pcm_substream *substream,
return err;
}
snd_pcm_stream_lock_irq(substream);
- if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL))
- control->appl_ptr = sync_ptr.c.control.appl_ptr;
- else
+ if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_APPL)) {
+ err = pcm_lib_apply_appl_ptr(substream,
+ sync_ptr.c.control.appl_ptr);
+ if (err < 0) {
+ snd_pcm_stream_unlock_irq(substream);
+ return err;
+ }
+ } else {
sync_ptr.c.control.appl_ptr = control->appl_ptr;
+ }
if (!(sync_ptr.flags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
control->avail_min = sync_ptr.c.control.avail_min;
else
return 0;
}
-static int snd_pcm_common_ioctl1(struct file *file,
+static int snd_pcm_common_ioctl(struct file *file,
struct snd_pcm_substream *substream,
unsigned int cmd, void __user *arg)
{
+ struct snd_pcm_file *pcm_file = file->private_data;
+
switch (cmd) {
case SNDRV_PCM_IOCTL_PVERSION:
return put_user(SNDRV_PCM_VERSION, (int __user *)arg) ? -EFAULT : 0;
return 0;
case SNDRV_PCM_IOCTL_TTSTAMP:
return snd_pcm_tstamp(substream, arg);
+ case SNDRV_PCM_IOCTL_USER_PVERSION:
+ if (get_user(pcm_file->user_pversion,
+ (unsigned int __user *)arg))
+ return -EFAULT;
+ return 0;
case SNDRV_PCM_IOCTL_HW_REFINE:
return snd_pcm_hw_refine_user(substream, arg);
case SNDRV_PCM_IOCTL_HW_PARAMS:
case SNDRV_PCM_IOCTL_RESET:
return snd_pcm_reset(substream);
case SNDRV_PCM_IOCTL_START:
- return snd_pcm_action_lock_irq(&snd_pcm_action_start, substream, SNDRV_PCM_STATE_RUNNING);
+ return snd_pcm_start_lock_irq(substream);
case SNDRV_PCM_IOCTL_LINK:
return snd_pcm_link(substream, (int)(unsigned long) arg);
case SNDRV_PCM_IOCTL_UNLINK:
case SNDRV_PCM_IOCTL_HWSYNC:
return snd_pcm_hwsync(substream);
case SNDRV_PCM_IOCTL_DELAY:
- return snd_pcm_delay(substream, arg);
+ {
+ snd_pcm_sframes_t delay = snd_pcm_delay(substream);
+ snd_pcm_sframes_t __user *res = arg;
+
+ if (delay < 0)
+ return delay;
+ if (put_user(delay, res))
+ return -EFAULT;
+ return 0;
+ }
case SNDRV_PCM_IOCTL_SYNC_PTR:
return snd_pcm_sync_ptr(substream, arg);
#ifdef CONFIG_SND_SUPPORT_OLD_API
case SNDRV_PCM_IOCTL_DROP:
return snd_pcm_drop(substream);
case SNDRV_PCM_IOCTL_PAUSE:
- {
- int res;
- snd_pcm_stream_lock_irq(substream);
- res = snd_pcm_pause(substream, (int)(unsigned long)arg);
- snd_pcm_stream_unlock_irq(substream);
- return res;
- }
+ return snd_pcm_action_lock_irq(&snd_pcm_action_pause,
+ substream,
+ (int)(unsigned long)arg);
}
pcm_dbg(substream->pcm, "unknown ioctl = 0x%x\n", cmd);
return -ENOTTY;
}
+static int snd_pcm_common_ioctl1(struct file *file,
+ struct snd_pcm_substream *substream,
+ unsigned int cmd, void __user *arg)
+{
+ struct snd_card *card = substream->pcm->card;
+ int res;
+
+ snd_power_lock(card);
+ res = snd_power_wait(card, SNDRV_CTL_POWER_D0);
+ if (res >= 0)
+ res = snd_pcm_common_ioctl(file, substream, cmd, arg);
+ snd_power_unlock(card);
+ return res;
+}
+
static int snd_pcm_playback_ioctl1(struct file *file,
struct snd_pcm_substream *substream,
unsigned int cmd, void __user *arg)
{
- if (snd_BUG_ON(!substream))
+ if (PCM_RUNTIME_CHECK(substream))
return -ENXIO;
if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_PLAYBACK))
return -EINVAL;
struct snd_pcm_substream *substream,
unsigned int cmd, void __user *arg)
{
- if (snd_BUG_ON(!substream))
+ if (PCM_RUNTIME_CHECK(substream))
return -ENXIO;
if (snd_BUG_ON(substream->stream != SNDRV_PCM_STREAM_CAPTURE))
return -EINVAL;
(void __user *)arg);
}
+/**
+ * snd_pcm_kernel_ioctl - Execute PCM ioctl in the kernel-space
+ * @substream: PCM substream
+ * @cmd: IOCTL cmd
+ * @arg: IOCTL argument
+ *
+ * The function is provided primarily for OSS layer and USB gadget drivers,
+ * and it allows only the limited set of ioctls (hw_params, sw_params,
+ * prepare, start, drain, drop, forward).
+ */
int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream,
unsigned int cmd, void *arg)
{
- mm_segment_t fs;
- int result;
+ snd_pcm_uframes_t *frames = arg;
+ snd_pcm_sframes_t result;
- fs = snd_enter_user();
- switch (substream->stream) {
- case SNDRV_PCM_STREAM_PLAYBACK:
- result = snd_pcm_playback_ioctl1(NULL, substream, cmd,
- (void __user *)arg);
- break;
- case SNDRV_PCM_STREAM_CAPTURE:
- result = snd_pcm_capture_ioctl1(NULL, substream, cmd,
- (void __user *)arg);
- break;
+ switch (cmd) {
+ case SNDRV_PCM_IOCTL_FORWARD:
+ {
+ /* provided only for OSS; capture-only and no value returned */
+ if (substream->stream != SNDRV_PCM_STREAM_CAPTURE)
+ return -EINVAL;
+ result = snd_pcm_capture_forward(substream, *frames);
+ return result < 0 ? result : 0;
+ }
+ case SNDRV_PCM_IOCTL_HW_PARAMS:
+ return snd_pcm_hw_params(substream, arg);
+ case SNDRV_PCM_IOCTL_SW_PARAMS:
+ return snd_pcm_sw_params(substream, arg);
+ case SNDRV_PCM_IOCTL_PREPARE:
+ return snd_pcm_prepare(substream, NULL);
+ case SNDRV_PCM_IOCTL_START:
+ return snd_pcm_start_lock_irq(substream);
+ case SNDRV_PCM_IOCTL_DRAIN:
+ return snd_pcm_drain(substream, NULL);
+ case SNDRV_PCM_IOCTL_DROP:
+ return snd_pcm_drop(substream);
+ case SNDRV_PCM_IOCTL_DELAY:
+ {
+ result = snd_pcm_delay(substream);
+ if (result < 0)
+ return result;
+ *frames = result;
+ return 0;
+ }
default:
- result = -EINVAL;
- break;
+ return -EINVAL;
}
- snd_leave_user(fs);
- return result;
}
-
EXPORT_SYMBOL(snd_pcm_kernel_ioctl);
static ssize_t snd_pcm_read(struct file *file, char __user *buf, size_t count,
area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
return 0;
}
+
+static bool pcm_status_mmap_allowed(struct snd_pcm_file *pcm_file)
+{
+ if (pcm_file->no_compat_mmap)
+ return false;
+ /* See pcm_control_mmap_allowed() below.
+ * Since older alsa-lib requires both status and control mmaps to be
+ * coupled, we have to disable the status mmap for old alsa-lib, too.
+ */
+ if (pcm_file->user_pversion < SNDRV_PROTOCOL_VERSION(2, 0, 14) &&
+ (pcm_file->substream->runtime->hw.info & SNDRV_PCM_INFO_SYNC_APPLPTR))
+ return false;
+ return true;
+}
+
+static bool pcm_control_mmap_allowed(struct snd_pcm_file *pcm_file)
+{
+ if (pcm_file->no_compat_mmap)
+ return false;
+ /* Disallow the control mmap when SYNC_APPLPTR flag is set;
+ * it enforces the user-space to fall back to snd_pcm_sync_ptr(),
+ * thus it effectively assures the manual update of appl_ptr.
+ */
+ if (pcm_file->substream->runtime->hw.info & SNDRV_PCM_INFO_SYNC_APPLPTR)
+ return false;
+ return true;
+}
+
#else /* ! coherent mmap */
/*
* don't support mmap for status and control records.
*/
+#define pcm_status_mmap_allowed(pcm_file) false
+#define pcm_control_mmap_allowed(pcm_file) false
+
static int snd_pcm_mmap_status(struct snd_pcm_substream *substream, struct file *file,
struct vm_area_struct *area)
{
}
#endif /* CONFIG_GENERIC_ALLOCATOR */
#ifndef CONFIG_X86 /* for avoiding warnings arch/x86/mm/pat.c */
- if (!substream->ops->page &&
+ if (IS_ENABLED(CONFIG_HAS_DMA) && !substream->ops->page &&
substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV)
return dma_mmap_coherent(substream->dma_buffer.dev.dev,
area,
area->vm_page_prot = pgprot_noncached(area->vm_page_prot);
return vm_iomap_memory(area, runtime->dma_addr, runtime->dma_bytes);
}
-
EXPORT_SYMBOL(snd_pcm_lib_mmap_iomem);
#endif /* SNDRV_PCM_INFO_MMAP */
atomic_inc(&substream->mmap_count);
return err;
}
-
EXPORT_SYMBOL(snd_pcm_mmap_data);
static int snd_pcm_mmap(struct file *file, struct vm_area_struct *area)
offset = area->vm_pgoff << PAGE_SHIFT;
switch (offset) {
case SNDRV_PCM_MMAP_OFFSET_STATUS:
- if (pcm_file->no_compat_mmap)
+ if (!pcm_status_mmap_allowed(pcm_file))
return -ENXIO;
return snd_pcm_mmap_status(substream, file, area);
case SNDRV_PCM_MMAP_OFFSET_CONTROL:
- if (pcm_file->no_compat_mmap)
+ if (!pcm_control_mmap_allowed(pcm_file))
return -ENXIO;
return snd_pcm_mmap_control(substream, file, area);
default:
}
snd_pcm_hw_convert_from_old_params(params, oparams);
err = snd_pcm_hw_refine(substream, params);
- snd_pcm_hw_convert_to_old_params(oparams, params);
- if (copy_to_user(_oparams, oparams, sizeof(*oparams))) {
- if (!err)
- err = -EFAULT;
- }
+ if (err < 0)
+ goto out_old;
+ err = fixup_unreferenced_params(substream, params);
+ if (err < 0)
+ goto out_old;
+
+ snd_pcm_hw_convert_to_old_params(oparams, params);
+ if (copy_to_user(_oparams, oparams, sizeof(*oparams)))
+ err = -EFAULT;
+out_old:
kfree(oparams);
out:
kfree(params);
err = PTR_ERR(oparams);
goto out;
}
+
snd_pcm_hw_convert_from_old_params(params, oparams);
err = snd_pcm_hw_params(substream, params);
- snd_pcm_hw_convert_to_old_params(oparams, params);
- if (copy_to_user(_oparams, oparams, sizeof(*oparams))) {
- if (!err)
- err = -EFAULT;
- }
+ if (err < 0)
+ goto out_old;
+ snd_pcm_hw_convert_to_old_params(oparams, params);
+ if (copy_to_user(_oparams, oparams, sizeof(*oparams)))
+ err = -EFAULT;
+out_old:
kfree(oparams);
out:
kfree(params);
git.samba.org / sfrench / cifs-2.6.git / blobdiff