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-rw-r--r--include/sound/pcm.h81
-rw-r--r--sound/core/pcm_native.c64
2 files changed, 72 insertions, 73 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index bc79962f4aa6..67e0bdb9f0fa 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -494,9 +494,6 @@ int snd_pcm_notify(struct snd_pcm_notify *notify, int nfree);
* Native I/O
*/
-extern rwlock_t snd_pcm_link_rwlock;
-extern struct rw_semaphore snd_pcm_link_rwsem;
-
int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info);
int snd_pcm_info_user(struct snd_pcm_substream *substream,
struct snd_pcm_info __user *info);
@@ -540,72 +537,18 @@ static inline int snd_pcm_stream_linked(struct snd_pcm_substream *substream)
return substream->group != &substream->self_group;
}
-static inline void snd_pcm_stream_lock(struct snd_pcm_substream *substream)
-{
- if (substream->pcm->nonatomic) {
- down_read(&snd_pcm_link_rwsem);
- mutex_lock(&substream->self_group.mutex);
- } else {
- read_lock(&snd_pcm_link_rwlock);
- spin_lock(&substream->self_group.lock);
- }
-}
-
-static inline void snd_pcm_stream_unlock(struct snd_pcm_substream *substream)
-{
- if (substream->pcm->nonatomic) {
- mutex_unlock(&substream->self_group.mutex);
- up_read(&snd_pcm_link_rwsem);
- } else {
- spin_unlock(&substream->self_group.lock);
- read_unlock(&snd_pcm_link_rwlock);
- }
-}
-
-static inline void snd_pcm_stream_lock_irq(struct snd_pcm_substream *substream)
-{
- if (substream->pcm->nonatomic) {
- down_read(&snd_pcm_link_rwsem);
- mutex_lock(&substream->self_group.mutex);
- } else {
- read_lock_irq(&snd_pcm_link_rwlock);
- spin_lock(&substream->self_group.lock);
- }
-}
-
-static inline void snd_pcm_stream_unlock_irq(struct snd_pcm_substream *substream)
-{
- if (substream->pcm->nonatomic) {
- mutex_unlock(&substream->self_group.mutex);
- up_read(&snd_pcm_link_rwsem);
- } else {
- spin_unlock(&substream->self_group.lock);
- read_unlock_irq(&snd_pcm_link_rwlock);
- }
-}
-
-#define snd_pcm_stream_lock_irqsave(substream, flags) \
-do { \
- if ((substream)->pcm->nonatomic) { \
- (flags) = 0; /* XXX for avoid warning */ \
- down_read(&snd_pcm_link_rwsem); \
- mutex_lock(&(substream)->self_group.mutex); \
- } else { \
- read_lock_irqsave(&snd_pcm_link_rwlock, (flags)); \
- spin_lock(&(substream)->self_group.lock); \
- } \
-} while (0)
-
-#define snd_pcm_stream_unlock_irqrestore(substream, flags) \
-do { \
- if ((substream)->pcm->nonatomic) { \
- mutex_unlock(&(substream)->self_group.mutex); \
- up_read(&snd_pcm_link_rwsem); \
- } else { \
- spin_unlock(&(substream)->self_group.lock); \
- read_unlock_irqrestore(&snd_pcm_link_rwlock, (flags)); \
- } \
-} while (0)
+void snd_pcm_stream_lock(struct snd_pcm_substream *substream);
+void snd_pcm_stream_unlock(struct snd_pcm_substream *substream);
+void snd_pcm_stream_lock_irq(struct snd_pcm_substream *substream);
+void snd_pcm_stream_unlock_irq(struct snd_pcm_substream *substream);
+unsigned long _snd_pcm_stream_lock_irqsave(struct snd_pcm_substream *substream);
+#define snd_pcm_stream_lock_irqsave(substream, flags) \
+ do { \
+ typecheck(unsigned long, flags); \
+ flags = _snd_pcm_stream_lock_irqsave(substream); \
+ } while (0)
+void snd_pcm_stream_unlock_irqrestore(struct snd_pcm_substream *substream,
+ unsigned long flags);
#define snd_pcm_group_for_each_entry(s, substream) \
list_for_each_entry(s, &substream->group->substreams, link_list)
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 16d9b7e15f8b..85fe1a216225 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -74,11 +74,67 @@ static int snd_pcm_open(struct file *file, struct snd_pcm *pcm, int stream);
*
*/
-DEFINE_RWLOCK(snd_pcm_link_rwlock);
-EXPORT_SYMBOL(snd_pcm_link_rwlock);
+static DEFINE_RWLOCK(snd_pcm_link_rwlock);
+static DECLARE_RWSEM(snd_pcm_link_rwsem);
-DECLARE_RWSEM(snd_pcm_link_rwsem);
-EXPORT_SYMBOL(snd_pcm_link_rwsem);
+void snd_pcm_stream_lock(struct snd_pcm_substream *substream)
+{
+ if (substream->pcm->nonatomic) {
+ down_read(&snd_pcm_link_rwsem);
+ mutex_lock(&substream->self_group.mutex);
+ } else {
+ read_lock(&snd_pcm_link_rwlock);
+ spin_lock(&substream->self_group.lock);
+ }
+}
+EXPORT_SYMBOL_GPL(snd_pcm_stream_lock);
+
+void snd_pcm_stream_unlock(struct snd_pcm_substream *substream)
+{
+ if (substream->pcm->nonatomic) {
+ mutex_unlock(&substream->self_group.mutex);
+ up_read(&snd_pcm_link_rwsem);
+ } else {
+ spin_unlock(&substream->self_group.lock);
+ read_unlock(&snd_pcm_link_rwlock);
+ }
+}
+EXPORT_SYMBOL_GPL(snd_pcm_stream_unlock);
+
+void snd_pcm_stream_lock_irq(struct snd_pcm_substream *substream)
+{
+ if (!substream->pcm->nonatomic)
+ local_irq_disable();
+ snd_pcm_stream_lock(substream);
+}
+EXPORT_SYMBOL_GPL(snd_pcm_stream_lock_irq);
+
+void snd_pcm_stream_unlock_irq(struct snd_pcm_substream *substream)
+{
+ snd_pcm_stream_unlock(substream);
+ if (!substream->pcm->nonatomic)
+ local_irq_enable();
+}
+EXPORT_SYMBOL_GPL(snd_pcm_stream_unlock_irq);
+
+unsigned long _snd_pcm_stream_lock_irqsave(struct snd_pcm_substream *substream)
+{
+ unsigned long flags = 0;
+ if (!substream->pcm->nonatomic)
+ local_irq_save(flags);
+ snd_pcm_stream_lock(substream);
+ return flags;
+}
+EXPORT_SYMBOL_GPL(_snd_pcm_stream_lock_irqsave);
+
+void snd_pcm_stream_unlock_irqrestore(struct snd_pcm_substream *substream,
+ unsigned long flags)
+{
+ snd_pcm_stream_unlock(substream);
+ if (!substream->pcm->nonatomic)
+ local_irq_restore(flags);
+}
+EXPORT_SYMBOL_GPL(snd_pcm_stream_unlock_irqrestore);
static inline mm_segment_t snd_enter_user(void)
{