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linux/sound/core/seq
Kay Sievers 03cfe6f57d ALSA: support module on-demand loading for seq and timer
If CONFIG_SND_DYNAMIC_MINORS is used, assign /dev/snd/seq and
/dev/snd/timer the usual static minors, and export specific
module aliases to generate udev module on-demand loading
instructions:

  $ cat /lib/modules/2.6.33.4-smp/modules.devname
  # Device nodes to trigger on-demand module loading.
  microcode cpu/microcode c10:184
  fuse fuse c10:229
  ppp_generic ppp c108:0
  tun net/tun c10:200
  uinput uinput c10:223
  dm_mod mapper/control c10:236
  snd_timer snd/timer c116:33
  snd_seq snd/seq c116:1

The last two lines instruct udev to create device nodes, even
when the modules are not loaded at that time.

As soon as userspace accesses any of these nodes, the in-kernel
module-loader will load the module, and the device can be used.

The header file minor calculation needed to be simplified to
make __stringify() (supports only two indirections) in
the MODULE_ALIAS macro work.

This is part of systemd's effort to get rid of unconditional
module load instructions and needless init scripts.

Cc: Lennart Poettering <lennart@poettering.net>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-11-24 05:53:25 +01:00
..
oss llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
Kconfig ALSA: clean up the logic for building sequencer modules 2009-05-29 11:49:42 +02:00
Makefile ALSA: OSS sequencer should be initialized after snd_seq_system_client_init 2009-07-19 19:10:01 +02:00
seq_clientmgr.c ALSA: core - Define llseek fops 2010-04-13 12:01:21 +02:00
seq_clientmgr.h [ALSA] sound/core/seq: move declarations of globally visible variables to proper headers 2008-01-31 17:29:35 +01:00
seq_compat.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
seq_device.c ALSA: Kill snd_assert() in sound/core/* 2008-08-13 11:46:35 +02:00
seq_dummy.c [ALSA] Remove sound/driver.h 2008-01-31 17:29:48 +01:00
seq_fifo.c ALSA: Kill snd_assert() in sound/core/* 2008-08-13 11:46:35 +02:00
seq_fifo.h [ALSA] Remove xxx_t typedefs: Sequencer 2006-01-03 12:17:52 +01:00
seq_info.c [ALSA] Remove sound/driver.h 2008-01-31 17:29:48 +01:00
seq_info.h [ALSA] Optimize for config without PROC_FS (seq and oss parts) 2006-01-03 12:30:05 +01:00
seq_lock.c [ALSA] Remove sound/driver.h 2008-01-31 17:29:48 +01:00
seq_lock.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
seq_memory.c ALSA: Kill snd_assert() in sound/core/* 2008-08-13 11:46:35 +02:00
seq_memory.h spelling fixes 2006-06-26 18:35:02 +02:00
seq_midi_emul.c [ALSA] Remove sound/driver.h 2008-01-31 17:29:48 +01:00
seq_midi_event.c sound: seq_midi_event: fix decoding of (N)RPN events 2009-06-22 11:11:49 +02:00
seq_midi.c sound: rawmidi: disable active-sensing-on-close by default 2009-07-15 11:57:20 +02:00
seq_ports.c ALSA: Kill snd_assert() in sound/core/* 2008-08-13 11:46:35 +02:00
seq_ports.h [ALSA] Remove xxx_t typedefs: Sequencer 2006-01-03 12:17:52 +01:00
seq_prioq.c ALSA: Add missing KERN_* prefix to printk in sound/core 2009-02-05 16:00:49 +01:00
seq_prioq.h [ALSA] Remove xxx_t typedefs: Sequencer 2006-01-03 12:17:52 +01:00
seq_queue.c ALSA: Kill snd_assert() in sound/core/* 2008-08-13 11:46:35 +02:00
seq_queue.h [ALSA] semaphore -> mutex (core part) 2006-03-22 10:24:50 +01:00
seq_system.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
seq_system.h [ALSA] Remove xxx_t typedefs: Sequencer 2006-01-03 12:17:52 +01:00
seq_timer.c sound: seq_timer: simplify snd_seq_timer_set_tick_resolution() parameters 2010-01-18 16:38:30 +01:00
seq_timer.h [ALSA] sound/core/seq: move declarations of globally visible variables to proper headers 2008-01-31 17:29:35 +01:00
seq_virmidi.c [ALSA] Remove sound/driver.h 2008-01-31 17:29:48 +01:00
seq.c ALSA: support module on-demand loading for seq and timer 2010-11-24 05:53:25 +01:00