ALSA: seq: Clean up device and driver structs

Use const string pointer instead of copying the id string to each
object.  Also drop the status and list fields of snd_seq_device struct
that are no longer used.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 6 insertions, 12 deletions

diff --git a/include/sound/seq_device.h b/include/sound/seq_device.h
index ea256b825146..b13cd2930d32 100644
--- a/include/sound/seq_device.h
+++ b/include/sound/seq_device.h
@@ -25,24 +25,16 @@
  * registered device information
  */
 
-#define ID_LEN  32
-
-/* status flag */
-#define SNDRV_SEQ_DEVICE_FREE           0
-#define SNDRV_SEQ_DEVICE_REGISTERED     1
-
 struct snd_seq_device {
         /* device info */
         struct snd_card *card;  /* sound card */
         int device;             /* device number */
-        char id[ID_LEN];        /* driver id */
+        const char *id;         /* driver id */
         char name[80];          /* device name */
         int argsize;            /* size of the argument */
         void *driver_data;      /* private data for driver */
-        int status;             /* flag - read only */
         void *private_data;     /* private data for the caller */
         void (*private_free)(struct snd_seq_device *device);
-        struct list_head list;  /* link to next device */
         struct device dev;
 };
 
@@ -75,9 +67,11 @@ void snd_seq_device_load_drivers(void);
 #else
 #define snd_seq_device_load_drivers()
 #endif
-int snd_seq_device_new(struct snd_card *card, int device, char *id, int argsize, struct snd_seq_device **result);
-int snd_seq_device_register_driver(char *id, struct snd_seq_dev_ops *entry, int argsize);
-int snd_seq_device_unregister_driver(char *id);
+int snd_seq_device_new(struct snd_card *card, int device, const char *id,
+                       int argsize, struct snd_seq_device **result);
+int snd_seq_device_register_driver(const char *id,
+                                   struct snd_seq_dev_ops *entry, int argsize);
+int snd_seq_device_unregister_driver(const char *id);
 
 #define SNDRV_SEQ_DEVICE_ARGPTR(dev) (void *)((char *)(dev) + sizeof(struct snd_seq_device))