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Diffstat (limited to 'include/sound/core.h')
-rw-r--r--include/sound/core.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/include/sound/core.h b/include/sound/core.h
index af3dce956c17..ac8b692b69b4 100644
--- a/include/sound/core.h
+++ b/include/sound/core.h
@@ -69,7 +69,7 @@ struct snd_device {
enum snd_device_state state; /* state of the device */
enum snd_device_type type; /* device type */
void *device_data; /* device structure */
- struct snd_device_ops *ops; /* operations */
+ const struct snd_device_ops *ops; /* operations */
};
#define snd_device(n) list_entry(n, struct snd_device, list)
@@ -120,6 +120,9 @@ struct snd_card {
int sync_irq; /* assigned irq, used for PCM sync */
wait_queue_head_t remove_sleep;
+ size_t total_pcm_alloc_bytes; /* total amount of allocated buffers */
+ struct mutex memory_mutex; /* protection for the above */
+
#ifdef CONFIG_PM
unsigned int power_state; /* power state */
wait_queue_head_t power_sleep;
@@ -256,7 +259,7 @@ static inline void snd_card_unref(struct snd_card *card)
/* device.c */
int snd_device_new(struct snd_card *card, enum snd_device_type type,
- void *device_data, struct snd_device_ops *ops);
+ void *device_data, const struct snd_device_ops *ops);
int snd_device_register(struct snd_card *card, void *device_data);
int snd_device_register_all(struct snd_card *card);
void snd_device_disconnect(struct snd_card *card, void *device_data);