Commit Graph

32 Commits

Author SHA1 Message Date
Takashi Iwai
35f8001415 ALSA: core: Follow standard EXPORT_SYMBOL() declarations
Just a tidy up to follow the standard EXPORT_SYMBOL*() declarations
in order to improve grep-ability.

- Move EXPORT_SYMBOL*() to the position right after its definition
- Remove superfluous blank line before EXPORT_SYMBOL*() lines

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-06-16 16:19:16 +02:00
Jie Yang
cd6a65036f ALSA: replace CONFIG_PROC_FS with CONFIG_SND_PROC_FS
We may disable proc fs only for sound part, to reduce ALSA
memory footprint. So add CONFIG_SND_PROC_FS and replace the
old CONFIG_PROC_FSs in alsa code.

With sound proc fs disabled, we can save about 9KB memory
size on X86_64 platform.

Signed-off-by: Jie Yang <yang.jie@intel.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-27 21:25:19 +02:00
Takashi Iwai
85d1431807 ALSA: core: Build conditionally and remove superfluous ifdefs
Minor cleanups of Makefile to build some codes conditionally so that
a few ifdefs can be reduced.

Acked-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-04-24 17:31:07 +02:00
Takashi Iwai
b591b6e9e9 ALSA: core: Don't ignore errors at creating proc files
So far we've ignored the errors at creating proc files in many places.
But they should be rather treated seriously.

Also, by assuring the error handling, we can get rid of superfluous
snd_info_free_entry() calls as they will be removed by the parent in
the caller side.

This patch fixes the missing error checks and reduces the superfluous
free calls.

Acked-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-04-24 17:31:06 +02:00
Takashi Iwai
b046d244e2 ALSA: core: Remove superfluous exit calls for proc entries
Since each proc entry is freed automatically by the parent, we don't
have to take care of its life cycle any longer.  This allows us to
reduce a few more lines of codes.

Acked-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-04-24 17:31:04 +02:00
Takashi Iwai
f246406481 ALSA: Use standard device refcount for card accounting
Drop the own refcount but use the standard device refcounting via
get_device() and put_device().  Introduce a new completion to snd_card
instead of the wait queue for syncing the last release, which is used
in snd_card_free().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-02-14 08:14:13 +01:00
Takashi Iwai
80d7d771ae ALSA: Drop unused name argument in snd_register_oss_device()
The last argument, name, of snd_oss_register_device() is nowhere
referred in the function in the current code.  Let's drop it.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-02-12 10:58:19 +01:00
Takashi Iwai
8eeaa2f9e0 ALSA: Replace with IS_ENABLED()
Replace the lengthy #if defined(XXX) || defined(XXX_MODULE) with the
new IS_ENABLED() macro.

The patch still doesn't cover all ifdefs.  For example, the dependency
on CONFIG_GAMEPORT is still open-coded because this also has an extra
dependency on MODULE.  Similarly, an open-coded ifdef in pcm_oss.c and
some sequencer-related stuff are left untouched.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-02-10 11:42:00 +01:00
Takashi Iwai
8bb4d9ce08 ALSA: Fix card refcount unbalance
There are uncovered cases whether the card refcount introduced by the
commit a0830dbd isn't properly increased or decreased:
- OSS PCM and mixer success paths
- When lookup function gets NULL

This patch fixes these places.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=50251

Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-11-08 14:36:18 +01:00
Takashi Iwai
a0830dbd4e ALSA: Add a reference counter to card instance
For more strict protection for wild disconnections, a refcount is
introduced to the card instance, and let it up/down when an object is
referred via snd_lookup_*() in the open ops.

The free-after-last-close check is also changed to check this refcount
instead of the empty list, too.

Reported-by: Matthieu CASTET <matthieu.castet@parrot.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-10-30 11:07:10 +01:00
Takashi Iwai
779ae5a083 ALSA: Fix the card number limit of OSS-emulation
There are left-over codes from the ancient days with the static device
number limitation of 8.  Actaully OSS can support up to 16 cards.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2012-05-08 17:25:56 +02:00
Paul Gortmaker
d81a6d7176 sound: Add export.h for THIS_MODULE/EXPORT_SYMBOL where needed
These aren't modules, but they do make use of these macros, so
they will need export.h to get that definition.  Previously,
they got it via the implicit module.h inclusion.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-31 19:31:22 -04:00
Takashi Iwai
808c569f36 ALSA: Remove warning message for invalid OSS minor ranges
When a card instance with a higher card number is registered, warning
messages are spewed eventually with stack traces due to the invalid minor
number for OSS device registration.  For example, thinkpad-acpi registers
the card number 29 as default, and you'll see always these messages.
This is rather confusing (and worries users), thus better to return
simply the error code.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-01-18 14:18:55 +01:00
Takashi Iwai
7eaa943c8e ALSA: Kill snd_assert() in sound/core/*
Kill snd_assert() in sound/core/*, either removed or replaced with
if () with snd_BUG_ON().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-08-13 11:46:35 +02:00
Takashi Iwai
9004acc70e [ALSA] Remove sound/driver.h
This header file exists only for some hacks to adapt alsa-driver
tree.  It's useless for building in the kernel.  Let's move a few
lines in it to sound/core.h and remove it.
With this patch, sound/driver.h isn't removed but has just a single
compile warning to include it.  This should be really killed in
future.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:29:48 +01:00
Jaroslav Kysela
c1017a4cdb [ALSA] Changed Jaroslav Kysela's e-mail from perex@suse.cz to perex@perex.cz
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2007-10-16 16:51:18 +02:00
Takashi Iwai
7d2aae1e88 [PATCH] ALSA: Fix sysfs breakage
The recent change for a new sysfs tree with card* object breaks the
/sys/class/sound tree if CONFIG_SYSFS_DEPRECATED is enabled.
The device in each entry doesn't point the correct device object:

  /sys/class/sound
  ...
  |-- pcmC0D0c
  |   |-- dev
  |   |-- device -> ../../../class/sound/card0
  |   |-- pcm_class
  |   |-- power
  |   |   `-- wakeup
  |   |-- subsystem -> ../../../class/sound
  |   `-- uevent

Also, this change breaks some drivers (like sound/arm/*) referring
card->dev directly to obtain the device object for memory handling.

This patch reverts the semantics of card->dev to the former version,
which points to a real device object.  The card* object is stored in a
new card->card_dev field, instead.  The device parent is chosen either
card->dev or card->card_dev according to CONFIG_SYSFS_DEPRECATED to
keep the tree compatibility.
Also, card* isn't created if CONFIG_SYSFS_DEPRECATED is enabled.  The
reason of card* object is a root of all beloing devices, and it makes
little sense if each sound device points to the real device object
directly.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Monty Montgomery <xiphmont@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-01-29 14:32:53 -08:00
Takashi Iwai
746d4a02e6 [ALSA] Fix disconnection of proc interface
- 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: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2006-09-23 10:36:48 +02:00
Takashi Iwai
6581f4e74d [ALSA] Remove zero-initialization of static variables
Removed zero-initializations of static variables.
A tiny optimization.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-06-22 21:33:45 +02:00
Takashi Iwai
bf850204a7 [ALSA] Remove unneeded read/write_size fields in proc text ops
Remove unneeded read/write_size fields in proc text ops.
snd_info_set_text_ops() is fixed, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-06-22 21:33:09 +02:00
Takashi Iwai
c0d3fb39e9 [ALSA] Clean up EXPORT_SYMBOL()s in snd module
Move EXPORT_SYMBOL()s to places adjacent to functions/variables.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-06-22 21:32:52 +02:00
Arjan van de Ven
99ac48f54a [PATCH] mark f_ops const in the inode
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: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-28 09:16:05 -08:00
Adrian Bunk
3a63e44420 [ALSA] sound/core/: fix 3 off-by-one errors
Modules: ALSA Core

This patch fixes three off-by-one errors found by the Coverity checker.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-03-22 10:37:31 +01:00
Ingo Molnar
1a60d4c5a0 [ALSA] semaphore -> mutex (core part)
Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-03-22 10:24:50 +01:00
Takashi Iwai
e28563cceb [ALSA] Optimize for config without PROC_FS
Modules: HWDEP Midlevel,ALSA Core,PCM Midlevel,Timer Midlevel

Optimize the code when compiled without CONFIG_PROC_FS.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-01-03 12:30:02 +01:00
Clemens Ladisch
d001544ded [ALSA] dynamic minors (6/6): increase maximum number of sound cards
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: Clemens Ladisch <clemens@ladisch.de>
2006-01-03 12:29:21 +01:00
Clemens Ladisch
f87135f56c [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 <clemens@ladisch.de>
2006-01-03 12:29:17 +01:00
Clemens Ladisch
6983b7240c [ALSA] dynamic minors (2/6): simplify storage of snd_minor structures
Modules: ALSA Core

Store the snd_minor structure pointers in one array instead of using a
separate list for each card.  This simplifies the mapping from device
files to minor struct by removing the need to know about the encoding
of the card number in the minor number.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
2006-01-03 12:29:15 +01:00
Clemens Ladisch
2af677fc88 [ALSA] dynamic minors (1/6): store device type in struct snd_minor
Instead of a comment string, store the device type in the snd_minor
structure.  This makes snd_minor more flexible, and has the nice side
effect that we don't need anymore to create a separate snd_minor
template for registering a device but can pass the file_operations
directly to snd_register_device().

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
2006-01-03 12:29:14 +01:00
Takashi Iwai
174c1f65e5 [ALSA] Remove xxx_t typedefs: OSS-emulation
Modules: ALSA Core

Remove xxx_t typedefs from the core OSS-emulation codes.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-01-03 12:17:44 +01:00
Takashi Iwai
d568121ce3 [PATCH] Assign device pointer to OSS devices
Add register_sound_special_device() function to allow assignment of
device pointer to a specific OSS device for HAL.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2005-08-30 08:58:37 +02:00
Linus Torvalds
1da177e4c3 Linux-2.6.12-rc2
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!
2005-04-16 15:20:36 -07:00