Commit Graph

518826 Commits

Author SHA1 Message Date
Takashi Iwai
1c1784387a ALSA: ca0106: Fix/cleanup ifdef CONFIG_PROC_FS
Build ca0106_proc.o conditionally to drop unneeded ifdef.
Some are replaced with the new CONFIG_SND_PROC_FS.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 07:54:45 +02:00
Takashi Iwai
f68ce62997 ALSA: ac97: Fix ifdef CONFIG_PROC_FS
Replaced with the new CONFIG_SND_PROC_FS.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 07:52:43 +02:00
Takashi Iwai
4bce6fce79 ALSA: ak4xxx-adda: Drop unnecessary ifdef CONFIG_PROC_FS
The compiler can optimize it away if not needed.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 07:51:23 +02:00
Takashi Iwai
c43a55d5b1 ALSA: opl4: Fix / cleanup ifdef CONFIG_PROC_FS
Some are replaced with the new ifdef CONFIG_SND_PROC_FS.  Some are
removed by building opl4_proc.o conditionally.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 07:49:55 +02:00
Takashi Iwai
129a4c9f82 ALSA: dummy: Replace CONFIG_PROC_FS with CONFIG_SND_PROC_FS
Although there shouldn't be a problem in practice (the compiler should
handle well), it's better to follow to the new Kconfig.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 07:47:50 +02:00
Takashi Iwai
41960d9592 ALSA: aloop: Drop unnecessary ifdef CONFIG_PROC_FS
Since the compiler can optimize away the unused code, we can reduce
the messy ifdef.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 07:46:05 +02:00
Takashi Iwai
b816db9d36 ALSA: core: Fix randconfig build wrt CONFIG_PROC_FS
There are a few leftover CONFIG_PROC_FS forgotten to replace with
CONFIG_SND_PROC_FS.

Fixes: cd6a65036f ('ALSA: replace CONFIG_PROC_FS with CONFIG_SND_PROC_FS')
Reported-by: Jim Davis <jim.epost@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-29 07:21:02 +02:00
Takashi Iwai
18fe73ef7c ALSA: hda - Drop unused fields from struct hda_codec_preset
It's very unlikely that we'd need these fields out of sudden.
Let's drop them.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-28 14:46:55 +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
Jie Yang
e0ecb05a96 ALSA: Kconfig: add config item SND_PROC_FS for expert
For some embedded devices, we need reduce code size and data
footprint as much as possible, e.g. disabling procfs, hw/sw
params refinement, mmap, dpcm, dapm, compressed API...

Here add SND_PROC_FS item for expert, we can unselect it to
disable sound proc FS and reduce memory footprint.

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 21:25:17 +02:00
Takashi Sakamoto
31ea49baa1 ALSA: firewire-lib: fix buffer-over-run when detecting packet discontinuity
When detecting packet discontinuity, handle_in_packet() returns minus value
and this value is assigned to unsigned int variable, then the variable has
huge value. As a result, the variable causes buffer-over-run in
handle_out_packet(). This brings invalid page request and system hangup.

This commit fixes the bug to add a new argument into handle_in_packet()
and the number of handled data blocks is assignd to it. The function
return value is just used to check error.

I also considered to change the type of local variable to 'int' in
in_stream_callback(). This idea is based on type-conversion in C standard,
while it may cause future problems when adding more works. Thus, I dropped
this idea.

Fixes: 6fc6b9ce41c6('ALSA: firewire-lib: pass the number of data blocks in incoming packets to outgoing packets')
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-27 17:44:42 +02:00
Takashi Iwai
0d769a523a sound: sound_firmware: Fix invalid use of vfs_read()
It should use kernel_read() instead of vfs_read() to load a firmware
binary onto the kernel pages.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-26 13:48:58 +02:00
Takashi Iwai
574d69c27b ALSA: bcd2000: Make local data static
Spotted by sparse:
  sound/usb/bcd2000/bcd2000.c:73:1: warning: symbol 'devices_used' was not declared. Should it be static?

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-26 13:00:01 +02:00
Takashi Iwai
e42e748efd ALSA: lx6464es: Use NULL for pointers
Spotted by sparse:
  sound/pci/lx6464es/lx6464es.c:415:47: warning: Using plain integer as NULL pointer
  sound/pci/lx6464es/lx6464es.c:417:48: warning: Using plain integer as NULL pointer

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-26 13:00:00 +02:00
Takashi Iwai
1983126f97 ALSA: lx6464es: Fix duplicated SSID entries
PCI_DEVICE() macro itself defines SSID entries while we override them
after that.  Replace with a more appropriate macro, PCI_DEVICE_SUB()
to define all ID values properly.

Spotted by sparse:
  sound/pci/lx6464es/lx6464es.c:60:11: warning: Initializer entry defined twice
  sound/pci/lx6464es/lx6464es.c:61:12:   also defined here
  sound/pci/lx6464es/lx6464es.c:64:11: warning: Initializer entry defined twice
  sound/pci/lx6464es/lx6464es.c:65:12:   also defined here

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-26 13:00:00 +02:00
Takashi Iwai
e4c286880e ALSA: dummy: make local data static
Add missing prefix to make some local data static.

Spotted by sparse:
  sound/drivers/dummy.c:159:20: warning: symbol 'model_emu10k1' was not declared. Should it be static?
  sound/drivers/dummy.c:165:20: warning: symbol 'model_rme9652' was not declared. Should it be static?
  ....

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-26 12:59:26 +02:00
Takashi Sakamoto
146a5e3c1e ALSA: bebob: add Digidesign Mbox 2 Pro support
This device is based on DM1000E, and BeBoB version 1 firmware is
installed.

$ cat /proc/asound/cards
 0 [Pro            ]: BeBoB - Mbox 2 Pro
                      DIGIDESIGN Mbox 2 Pro (id:1, rev:1),
		      GUID 00a07e0100a90000 at fw1.0, S400

$ cat /proc/asound/Pro/firewire/firmware
Manufacturer:	bridgeCo
Protocol Ver:	1
Build Ver:		0
GUID:		0x00A07E0100A90000
Model ID:		0x01
Model Rev:		1
Firmware Date:	20071031
Firmware Time:	034402
Firmware ID:	0xA9
Firmware Ver:	16777215
Base Addr:		0x20080000
Max Size:		1572864
Loader Date:	20051207
Loader Time:	205554

With this patch, ALSA BeBoB driver can start packet streaming to/from
this model, while as a default, internal multiplexer of this model is
not initialized and generates no sound even if the driver transfers
any packets with PCM samples. To hear any sounds from this model,
userspace applications should be developed to set parameters to the
internal multiplexer. You can see raw information in FFADO website:
http://subversion.ffado.org/wiki/AvcModels/DigiDesignMboxPro2

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-24 17:31:11 +02:00
Takashi Sakamoto
a900705491 ALSA: firewire-lib: use protocol error when detecting wrong value in CIP header
When detecting zero in 'dbs' field of CIP header, this packet streaming
should be aborted because of avoiding division-by-zero. This is an error
in an aspect of IEC 61883-1, thus protocol error.

This commit use EPROTO instead of EIO. Actually, the returned value is
not used for userspace and this commit has no effect.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Acked-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-24 08:23:58 +02:00
Takashi Sakamoto
12e0f438d3 ALSA: firewire-lib: use dev_err() when detecting incoming streaming error
When detecting invalid value in 'dbs' field of CIP header or packet
discontinuity, current implementation reports the status by err_info().
In most cases this state is caused by model-specific issue due to
vendor's customization and should be reported to developers.

This commit use dev_err() instead of dev_info() for this purpose.
In the cases, packet streaming is aborted, thus no message floading
occurs.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Acked-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-24 08:23:43 +02:00
Takashi Sakamoto
9a2820c118 ALSA: firewire-lib: macro arrangement for code cleanup
Some macros include my misunderstanding for IEC 61883-1 or -6.
Additionally, some fixed values appear on codes.

This commit replaces these with macros with proper names.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Acked-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-24 08:23:36 +02:00
Takashi Sakamoto
29bcae2081 ALSA: firewire-lib: rename local functions for code cleanup
The naming rule for local functions was inconsistent. This commit
rename them with a consistent manner.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Acked-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-24 08:23:14 +02:00
Takashi Sakamoto
727d3a0b1f ALSA: firewire-lib: remove restriction for non-blocking mode
Former patches allow non-blocking streams to synchronize with timestamp.
This patch removes the restriction.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-23 09:13:21 +02:00
Takashi Sakamoto
a4103bd7fd ALSA: firewire-lib: set streaming error outside of packetization
In previous commit, error handling for incoming packet processing is
outside of packetization. This is nice for reading the codes.

This commit applies this idea for outgoing packet processing, too.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-23 09:13:20 +02:00
Takashi Sakamoto
6fc6b9ce41 ALSA: firewire-lib: pass the number of data blocks in incoming packets to outgoing packets
Current implementation reuses the value of syt field in incoming packet to
outgoing packet for full duplex timestamp synchronization, while the number
of data blocks in outgoing packets refers to hard-coded table and the
synchronization cannot be applied to non-blocking stream.

This commit passes the number of data blocks from incoming packet
processing to outgoing packet processing for the synchronization. For
normal mode, isochronous callback handler is changed to generate the values
of syt and data blocks.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-23 09:13:19 +02:00
Takashi Sakamoto
875be09160 ALSA: firewire-lib: simplify function to calculate the number of data blocks
This function is called according to conditions between the value of
syt and streaming mode(blocking or non-blocking).

To simplify caller's work, this commit push these conditions to the
function.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-23 09:13:19 +02:00
Takashi Sakamoto
a2064710ba ALSA: firewire-lib: add buffer-over-run protection at receiving more data blocks than expected
In IEC 61883-6, the number of data blocks in a packet is limited up to
the value of SYT_INTERVAL. Current implementation is compliant to the
limitation, while it can cause buffer-over-run when the value of dbs
field in received packet is illegally large.

This commit adds a validator to detect such illegal packets to prevent
the buffer-over-run. Actually, the buffer is aligned to the size of memory
 page, thus this issue hardly causes system errors due to the room to page
alignment, as long as a few packets includes such jumbo payload; i.e.
a packet to several received packets.

Here, Behringer F-Control Audio 202 (based on OXFW 960) has a quirk to
postpone transferring isochronous packet till finish handling any
asynchronous packets. In this case, this model is lazy, transfers no
packets according to several cycle-start packets. After finishing, this
model pushes required data in next isochronous packet. As a result, the
packet include more data blocks than IEC 61883-6 defines.

To continue to support this model, this commit adds a new flag to extend
the length of calculated payload. This flag allows the size of payload
5 times as large as IEC 61883-6 defines. As a result, packets from this
model passed the validator successfully.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-23 09:13:18 +02:00
Takashi Iwai
181a152a09 Merge branch 'topic/hdmi' into for-next 2015-05-22 16:04:45 +02:00
Russell King
9203dd016a ALSA: pcm: add IEC958 channel status helper
Add a helper to create the IEC958 channel status from an ALSA
snd_pcm_runtime structure, taking account of the sample rate and
sample size.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviwed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-22 16:01:47 +02:00
Russell King
838d1631b7 ALSA: pcm: add DRM ELD helper
Add a helper for the EDID like data structure, which is typically passed
from a HDMI adapter to its associated audio driver.  This informs the
audio driver of the capabilities of the attached HDMI sink.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-22 16:01:44 +02:00
Takashi Iwai
6ab97f25ad ALSA: jack: Remove MODULE_*() macros
The jack interface is statically included in sound core.  Having
doubly module information is rather confusing.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-21 11:32:51 +02:00
Mengdong Lin
98d8fc6c5d ALSA: hda - Move hda_i915.c from sound/pci/hda to sound/hda
The file is moved to hda core and renamed to hdac_i915.c, so can be used
by both legacy HDA driver and new Skylake audio driver.

- Add snd_hdac_ prefix to the public APIs.
- The i915 audio component is moved to core bus and dynamically allocated.
- A static pointer hdac_acomp is used to help bind/unbind callbacks to get
  this component, because the sound card's private_data is used by the azx
  chip pointer, which is a legacy structure. It could be removed if private
  _data changes to some core structure which can be extended to find the
  bus.
- snd_hdac_get_display_clk() is added to get the display core clock for
  HSW/BDW.
- haswell_set_bclk() is moved to hda_intel.c because it needs to write the
  controller registers EM4/EM5, and only legacy HD-A needs it for HSW/BDW.
- Move definition of HSW/BDW-specific registers EM4/EM5 to hda_register.h
  and rename them to HSW_EM4/HSW_EM5, because other HD-A controllers have
  different layout for the extended mode registers.

Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-20 06:16:36 +02:00
Takashi Iwai
4214c5349c ALSA: hda - Fix NULL dereference from CA0132 DSP loader
The CA0132 DSP loader leads to NULL deference since the recent
transition to HDA core code, as it unconditionally accesses
hdac_stream->substream->runtime.  For DSP loading, the substream
shouldn't be assigned.

This patch addresses the NULL dereference above in addition to assure
the substream is cleared while DSP loading.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=98151
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-19 11:35:13 +02:00
Takashi Iwai
1882b0577b ALSA: hda - Sync HD-Audio-Models.txt for Realtek codecs
Added missing model entries and updated the codec names.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-19 10:21:57 +02:00
Takashi Iwai
b016951e89 ALSA: hda - Add headset-mode* model options for ALC269 & co
Modern machines tend to have only one headset jack nowadays, and they
often need these quirks.  Let's allow them applicable via model
option for ease of debugging.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-19 10:20:13 +02:00
Gabriele Martino
d5c016b56c ALSA: hda/ca0132: support for Alienware 15 Creative Sound Core3D-EX
This patch adds quirks detection to the Creative CA0132 codec, and the
quirk for Alienware 15 (2015).
Some quirks may need different pin configuration, so the relevant
compile-time configuration has been removed.
The pin configuration and related initialization verbs are generated at
runtime instead, in ca0132_config() and ca0132_prepare_verbs().

Signed-off-by: Gabriele Martino <g.martino@gmx.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-19 06:58:26 +02:00
Wolfram Sang
ac397c80de ALSA: ppc: keywest: drop using attach adapter
As we now have deferred probing, we can use a custom mechanism and
finally get rid of this legacy interface from the i2c core.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Tested-by: Dan DeVoto <dand1972@yahoo.com>
Tested-by: Mark Elliott <txlitebeer@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-18 11:25:44 +02:00
Sudip Mukherjee
108c5df14a sound: oss: fix build warning
while building with allyesconfig it was giving a build warning about
unused variable. declare the variable only if the driver is built as a
module.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-18 10:27:17 +02:00
Libin Yang
785d8c4be8 ALSA: hda - add hda_intel_trace.h
This patch creates hda_intel_trace.h to add some pm trace functions
used in hda_intel.c

Signed-off-by: Libin Yang <libin.yang@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-18 10:06:44 +02:00
Libin Yang
184865085b ALSA: hda - rename hda_intel_trace.h to hda_controller_trace.h
This patch does:

1. Rename the hda_intel_trace.h to hda_controller_trace.h as
this trace is used in hda_controller.c

2. Add some trace function for pcm flow.

Signed-off-by: Libin Yang <libin.yang@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-18 10:06:32 +02:00
Libin Yang
598dfb56b0 ALSA: hda - add hdac stream trace
Add the trace of snd_hdac_stream_start and snd_hdac_stream_stop.

Signed-off-by: Libin Yang <libin.yang@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-18 10:06:20 +02:00
Thierry Reding
5c03be00cd ALSA: hda/hdmi - Add Tegra210 support
Tegra210 contains a similar codec as Tegra124 and can be supported using
the same patch function.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-18 10:03:45 +02:00
Thierry Reding
e40bd3732c ALSA: hda/hdmi - Add Tegra114 support
Tegra114 contains the same codec as Tegra124 and can be supported using
the same patch function.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-18 10:03:38 +02:00
Thierry Reding
1387f42abf ALSA: hda/hdmi - Add Tegra30 support
Tegra30 contains the same codec as Tegra124 and can be supported using
the same patch function.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-18 10:03:32 +02:00
Thierry Reding
6a464a4ccb ALSA: hda/tegra - Improve error reporting
When probing, provide accurate error messages to help with debugging
failures.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-18 10:03:25 +02:00
Thierry Reding
26e9a960b2 ALSA: hda/hdmi - Implement Tegra-specific patch
The HDMI codec on NVIDIA Tegra SoCs has a feature that doesn't exist on
the MCP or GPU variants. The highest bit in the vendor-defined scratch
registers can be used to trigger an interrupt in the HDMI codec, which
is signalled to the HDMI driver. This can be used to pass information,
such as the HDA format, to the HDMI driver so that it can reconfigure
itself accordingly.

While at it, change the name of the codec to Tegra124 since there are no
other SoCs in the Tegra12x family. There isn't really a Tegra12x family.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-18 10:03:01 +02:00
Thierry Reding
88871dd25f ALSA: hda/tegra - Set CORBRP self-clear flag
This is set for the MCP variants of the NVIDIA HDA controller, which the
Tegra variant was derived from. This fixes the following warning at boot
time:

	[    2.486610] tegra-hda 70030000.hda: CORB reset timeout#1, CORBRP = 0

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-18 10:02:55 +02:00
Kailang Yang
977e627684 ALSA: hda/realtek - Support Dell headset mode for ALC298
Dell create new platform with ALC298 codec.
This patch will enable headset mode for ALC298/ALC3266 platform.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-18 10:00:09 +02:00
Takashi Iwai
c309c467ed ALSA: info: Drop kerneldoc comment from snd_info_create_entry()
It's no longer a part of API but merely a local function.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-18 09:45:11 +02:00
Takashi Iwai
8e7ccb7ba3 ALSA: info: Move list addition to snd_info_create_entry()
Just a minor refactoring, no functional changes.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-18 09:44:28 +02:00
Takashi Iwai
2471b6c80a ALSA: info: Register proc entries recursively, too
The commit [c560a6797e: ALSA: core: Remove child proc file elements
recursively] converted snd_card_proc_new() with the normal
snd_info_*() call and removed snd_device chain for such info
entries. However, it misses one point: the creation of the proc entry
was managed by snd_device chain in the former code, and now it's also
gone, which results in no proc files creation at all.  Mea culpa.

This patch makes snd_info_card_register() creating the all pending
child proc entries in a shot.  Also, since snd_card_register() might
be called multiple times, this function is also changed to be callable
multiple times.

Along with the changes above, now the linked list of snd_info_entry is
added at creation time instead of snd_info_register() for keeping eyes
of pending info entries.

Fixes: c560a6797e ('ALSA: core: Remove child proc file elements recursively')
Reported-by: "Lu, Han" <han.lu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-18 09:20:24 +02:00