From f87135f56cb266e031f5ec081dfbde7e43f55e80 Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Sun, 20 Nov 2005 14:06:59 +0100 Subject: [ALSA] dynamic minors (3/6): store device-specific object pointers dynamically Instead of storing the pointers to the device-specific structures in an array, put them into the struct snd_minor, and look them up dynamically. This makes the device type modules independent of the minor number encoding. Signed-off-by: Clemens Ladisch --- include/sound/core.h | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'include/sound/core.h') diff --git a/include/sound/core.h b/include/sound/core.h index 67b0a7e764e..90ac6132ea3 100644 --- a/include/sound/core.h +++ b/include/sound/core.h @@ -187,6 +187,7 @@ struct snd_minor { int card; /* card number */ int device; /* device number */ struct file_operations *f_ops; /* file operations */ + void *private_data; /* private data for f_ops->open */ char name[0]; /* device name (keep at the end of structure) */ }; @@ -199,13 +200,17 @@ extern int snd_ecards_limit; void snd_request_card(int card); int snd_register_device(int type, struct snd_card *card, int dev, - struct file_operations *f_ops, const char *name); + struct file_operations *f_ops, void *private_data, + const char *name); int snd_unregister_device(int type, struct snd_card *card, int dev); +void *snd_lookup_minor_data(unsigned int minor, int type); #ifdef CONFIG_SND_OSSEMUL int snd_register_oss_device(int type, struct snd_card *card, int dev, - struct file_operations *f_ops, const char *name); + struct file_operations *f_ops, void *private_data, + const char *name); int snd_unregister_oss_device(int type, struct snd_card *card, int dev); +void *snd_lookup_oss_minor_data(unsigned int minor, int type); #endif int snd_minor_info_init(void); -- cgit v1.2.3