linux-toradex.git/sound/core/sound.c, branch v3.18.1

ALSA: Create sysfs attribute files via groups

2014-02-25T11:12:49+00:00

Instead of calling each time device_create_file(), create the groups
of sysfs attribute files at once in a normal way.  Add a new helper
function, snd_get_device(), to return the associated device object,
so that we can handle the sysfs addition locally.

Since the sysfs file addition is done differently now,
snd_add_device_sysfs_file() helper function is removed.

Signed-off-by: Takashi Iwai

ALSA: core: Use standard printk helpers

2014-02-14T07:14:15+00:00

Use dev_err() & co as much as possible.  If not available (no device
assigned at the calling point), use pr_xxx() helpers instead.

Signed-off-by: Takashi Iwai

ALSA: Use standard device refcount for card accounting

2014-02-14T07:14:13+00:00

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

consolidate the reassignments of ->f_op in ->open() instances

2013-10-25T03:34:53+00:00

Signed-off-by: Al Viro

ALSA: add/change some comments describing function return values

2013-03-12T07:32:53+00:00

script/kernel-doc reports the following type of warnings (when run in verbose
mode):

Warning(sound/core/init.c:152): No description found for return value of
'snd_card_create'

To fix that:
- add missing descriptions of function return values
- use "Return:" sections to describe those return values

Along the way:
- complete some descriptions
- fix some typos

Signed-off-by: Yacine Belkadi 
Signed-off-by: Takashi Iwai

ALSA: Fix card refcount unbalance

2012-11-08T13:36:18+00:00

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: 
Signed-off-by: Takashi Iwai

ALSA: Add a reference counter to card instance

2012-10-30T10:07:10+00:00

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 
Cc: 
Signed-off-by: Takashi Iwai

ALSA: remove the main version information

2012-09-04T09:38:32+00:00

Remove the main ALSA version number from the kernel ALSA driver.
The ALSA driver package release diverges from the upstream. This may
confuse users to see the same ALSA version for many kernel releases
and this version lost it's original purpose and connection.

The "ioctl" APIs have own version numbers, so the user space may check
for specific API changes only.

Signed-off-by: Jaroslav Kysela

ALSA: core: add support for compressed devices

2011-12-23T09:07:46+00:00

Use the minor numbers 2 and 3 for audio compressed offload devices.
Also add support for these devices in core

Signed-off-by: Omair Mohammed Abdullah 
Signed-off-by: Pierre-Louis Bossart 
Signed-off-by: Vinod Koul 
Reviewed-by: Mark Brown 
Signed-off-by: Takashi Iwai

sound: fix drivers needing module.h not moduleparam.h

2011-10-31T23:31:19+00:00

The implicit presence of module.h lured several users into
incorrectly thinking that they only needed/used modparam.h
but once we clean up the module.h presence, these will show
up as build failures, so fix 'em now.

Signed-off-by: Paul Gortmaker