Converts from using struct "class_device" to "struct device" making
everything show up properly in /sys/devices/ with symlinks from the
/sys/class directory.

It also makes the struct sound_card to show up as a "real" device
where all the different sound class devices are placed as childs
and different card attribute files can hang off of. /sys/class/sound is
still a flat directory, but the symlink targets of all devices belonging
to the same card, point the the /sys/devices tree below the new card
device object.

Thanks to Kay for the updates to this patch.
Signed-off-by: NKay Sievers <kay.sievers@novell.com>
Acked-by: NJaroslav Kysela <perex@suse.cz>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Alsa used to kmalloc one file->f_op per file per disconnecting snd_card.
This led to oopses sometimes when file->f_op was freed before __fput()
finished.
Patch adds a virtual device for disconnect: VDD.
VDD consists of:
	LIST_HEAD(shutdown_files)
	    protected by DEFINE_SPINLOCK(shutdown_mutex)
	static struct file_operations snd_shutdown_f_ops
	    and functions assigned to it
	Additions to struct snd_monitor_file
	    to specify if instance is hidden by VDD or not.
A VDD's instance is
	created in snd_card_disconnect() under the card->files_lock.
	cleaned up in snd_card_file_remove() under the card->files_lock.
Signed-off-by: NKarsten Wiese <fzu@wemgehoertderstaat.de>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

Deprecated snd_card_free_in_thread(), replaced with
snd_card_free_when_closed().
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

Orignally proposed by Sam Revitch <sam.revitch@gmail.com>.
Unregister device files at disconnection to avoid the futher accesses.
Also, the dev_unregister callback is removed and replaced with the
combination of disconnect + free.
A new function snd_card_free_when_closed() is introduced, which is
used in USB disconnect callback.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

- Add the linked list to each proc entry to enable a single-shot
  disconnection (unregister)
- Deprecate snd_info_unregister(), use snd_info_free_entry()
- Removed NULL checks of snd_info_free_entry()
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

Removed zero-initializations of static variables.
A tiny optimization.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Fixed rwlock around snd_iprintf() in sound core part.
Replaced with mutex.
Also, make mutex and flags static variables with addition of
snd_card_locked() function (just for sound.c).
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Remove unneeded read/write_size fields in proc text ops.
snd_info_set_text_ops() is fixed, too.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Move EXPORT_SYMBOL()s to places adjacent to functions/variables.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Removed the unused file argument of snd_power_wait().
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Mark the f_ops members of inodes as const, as well as fix the
ripple-through this causes by places that copy this f_ops and then "do
stuff" with it.
Signed-off-by: NArjan van de Ven <arjan@infradead.org>
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Modules: ALSA Core

Add dummy functions that return -ENODEV for the struct file_operations
of a disconnected device.  Without such functions, userspace would get
ENOTTY.
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Modules: HWDEP Midlevel,ALSA Core,PCM Midlevel,Timer Midlevel

Optimize the code when compiled without CONFIG_PROC_FS.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Modules: ALSA Core,Memalloc module,ALSA sequencer

With dynamic minor numbers, we can increase the number of sound cards.

This requires that the sequencer client numbers of some kernel drivers
are allocated dynamically, too.
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>

Modules: ALSA Core,Control Midlevel,/oss/Makefile

Remove the centralized PM control in the sound core.
Each driver is responsible to get callbacks from bus/driver now.

SND_GENERIC_DRIVER is removed together with this action.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Modules: ALSA Core

Remove xxx_t typedefs from the core component.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

This allows us to eliminate the casts in the drivers, and eventually
remove the use of the device_driver function pointer methods for
platform device drivers.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Acked-by: NGreg Kroah-Hartman <gregkh@suse.de>

Modules: ALSA Core

Fix a typo (bogus check) in the last patch to fix Oops with suspend/resume.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Remove snd_runtime_check() macro.
This macro worsens the readability of codes.  They should be either
normal if() or removable asserts.

Also, the assert displays stack-dump, instead of only the last caller
pointer.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Convert everyone who uses platform_bus_type to include
linux/platform_device.h.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Acked-by: NGreg Kroah-Hartman <gregkh@suse.de>

In PM v1, all devices were called at SUSPEND_DISABLE level.  Then
all devices were called at SUSPEND_SAVE_STATE level, and finally
SUSPEND_POWER_DOWN level.  However, with PM v2, to maintain
compatibility for platform devices, I arranged for the PM v2
suspend/resume callbacks to call the old PM v1 suspend/resume
callbacks three times with each level in order so that existing
drivers continued to work.

Since this is obsolete infrastructure which is no longer necessary,
we can remove it.  Here's an (untested) patch to do exactly that.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

The patch fixes Oops from sound drivers using generic platform device
but have no suspend/resume callbacks.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Control Midlevel,ALSA Core,HWDEP Midlevel,PCM Midlevel,RawMidi Midlevel
Timer Midlevel,ALSA<-OSS emulation
Replace kcalloc(1,..) with kzalloc().
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

ALSA Core
A new function snd_card_set_generic_dev() is introduced to add the
'generic device' support for devices without proper bus on sysfs.
It's a last resort, and should be removed in future when they have
a proper bus, instead.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

I thought I'm done with fixing u32 vs.  pm_message_t ...  unfortunately that
turned out not to be the case as Russel King pointed out.  This fixes last few
bits in alsa.
Signed-off-by: NPavel Machek <pavel@suse.cz>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!