linux/sound
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
..
aoa of/device: Replace struct of_device with struct platform_device 2010-08-06 09:25:50 -06:00
arm
atmel ALSA: snd-atmel-abdac: test wrong variable 2010-11-22 07:55:20 +01:00
core ALSA: support module on-demand loading for seq and timer 2010-11-24 05:53:25 +01:00
drivers Merge remote branch 'alsa/devel' into topic/misc 2010-10-20 12:22:11 +02:00
i2c Merge branch 'fix/misc' into topic/misc 2010-10-11 13:45:22 +02:00
isa Merge branch 'fix/misc' into topic/misc 2010-09-09 10:51:45 +02:00
mips sound: Add missing spin_unlock 2010-05-27 09:47:02 +02:00
oss sound/oss: Remove unnecessary casts of void ptr 2010-11-11 01:59:04 +01:00
parisc
pci ALSA: oxygen: support for period wakeup disabling 2010-11-22 08:13:54 +01:00
pcmcia pcmcia: move driver name to struct pcmcia_driver 2010-09-29 17:20:24 +02:00
ppc ALSA: sound/ppc: Use printf extension %pR for struct resource 2010-11-22 07:41:25 +01:00
sh sound: sh: ctrl_in/outX to __raw_read/writeX conversion. 2010-10-27 15:53:50 +09:00
soc ASoC: tpa6130a2: Get rid of compile warning from tpa6130a2_power 2010-11-03 15:50:46 +01:00
sparc of/device: Replace struct of_device with struct platform_device 2010-08-06 09:25:50 -06:00
spi ALSA: AT73C213: Rectify misleading comment. 2010-11-11 02:03:29 +01:00
synth ALSA: emux: Add trivial compat ioctl handler 2010-09-14 16:18:11 +02:00
usb ALSA: usb-audio - Support for Power/Status LED on Creative USB X-Fi S51 2010-11-02 12:40:11 +01:00
ac97_bus.c
Kconfig
last.c
Makefile
sound_core.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
sound_firmware.c