26300 Commits

Author SHA1 Message Date
Dan Carpenter
b281844747 ASoC: Intel: Skylake: Uninitialized variable in probe_codec()
[ Upstream commit e6a33532affd14c12688c0e9b2e773e8b2550f3b ]

My static checker complains that if snd_hdac_bus_get_response() returns
-EIO then "res" is uninitialized.  Fix this by initializing it to -1 so
that the error is handled correctly.

Fixes: d8c2dab8381d ("ASoC: Intel: Add Skylake HDA audio driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-24 11:00:13 +01:00
Mikhail Paulyshka
67dc18ea69 ALSA: hda - Fix headset microphone detection for ASUS N551 and N751
[ Upstream commit fc7438b1eb12b6c93d7b7a62423779eb5dfc673c ]

Headset microphone does not work out of the box on ASUS Nx51
laptops. This patch fixes it.

Patch tested on Asus N551 laptop. Asus N751 part is not tested, but
according to [1] this laptop uses the same audiosystem.

1. https://bugzilla.kernel.org/show_bug.cgi?id=117781

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=195437
Signed-off-by: Mikhail Paulyshka <me@mixaill.tk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-24 11:00:12 +01:00
Pierre-Louis Bossart
92bfedfa93 ASoC: Intel: Atom: update Thinkpad 10 quirk
[ Upstream commit beb5989a8c6c6867b4e873cca2a66d31f977368f ]

There are multiple skews of the same Lenovo audio hardware
based on the Realtek RT5670 codec.

Manufacturer: LENOVO
        Product Name: 20C1CTO1WW
        Version: ThinkPad 10

Manufacturer: LENOVO
	Product Name: 20C3001VHH
	Version: ThinkPad 10

Manufacturer: LENOVO
	Product Name: 20C10024GE
	Version: ThinkPad Tablet B

Manufacturer: LENOVO
	Product Name: 20359
	Version: Lenovo Miix 2 10

For all these devices, the same quirk is used to force
the machine driver to be based on RT5670 instead of RT5640
as indicated by the BIOS.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=96691
Tested-by: Nicole Faerber <nicole.faerber@dpin.de>
Tested-by: Viacheslav Ostroukh <v.dev@ostroukh.me>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-24 11:00:10 +01:00
Kuninori Morimoto
548af581f9 ASoC: rsnd: check src mod pointer for rsnd_mod_id()
commit 374503c6109e60f48fa9b11341b14466f07bd3f4 upstream.

Without this patch, gcc 4.9.x says

    sound/soc/sh/rcar/cmd.c: In function 'rsnd_cmd_init':
    sound/soc/sh/rcar/cmd.c:85:14: warning: array subscript is below array\
	bounds [-Warray-bounds]
	data = path[rsnd_mod_id(src)] |

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-24 11:00:08 +01:00
Takashi Iwai
c706deff72 ALSA: seq: Clear client entry before deleting else at closing
commit a2ff19f7b70118ced291a28d5313469914de451b upstream.

When releasing a client, we need to clear the clienttab[] entry at
first, then call snd_seq_queue_client_leave().  Otherwise, the
in-flight cell in the queue might be picked up by the timer interrupt
via snd_seq_check_queue() before calling snd_seq_queue_client_leave(),
and it's delivered to another queue while the client is clearing
queues.  This may eventually result in an uncleared cell remaining in
a queue, and the later snd_seq_pool_delete() may need to wait for a
long time until the event gets really processed.

By moving the clienttab[] clearance at the beginning of release, any
event delivery of a cell belonging to this client will fail at a later
point, since snd_seq_client_ptr() returns NULL.  Thus the cell that
was picked up by the timer interrupt will be returned immediately
without further delivery, and the long stall of snd_seq_delete_pool()
can be avoided, too.

Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-22 09:18:00 +01:00
Takashi Iwai
1a3e9385dd ALSA: seq: Fix possible UAF in snd_seq_check_queue()
commit d0f833065221cbfcbadf19fd4102bcfa9330006a upstream.

Although we've covered the races between concurrent write() and
ioctl() in the previous patch series, there is still a possible UAF in
the following scenario:

A: user client closed		B: timer irq
  -> snd_seq_release()		  -> snd_seq_timer_interrupt()
    -> snd_seq_free_client()	    -> snd_seq_check_queue()
				      -> cell = snd_seq_prioq_cell_peek()
      -> snd_seq_prioq_leave()
         .... removing all cells
      -> snd_seq_pool_done()
         .... vfree()
				      -> snd_seq_compare_tick_time(cell)
				         ... Oops

So the problem is that a cell is peeked and accessed without any
protection until it's retrieved from the queue again via
snd_seq_prioq_cell_out().

This patch tries to address it, also cleans up the code by a slight
refactoring.  snd_seq_prioq_cell_out() now receives an extra pointer
argument.  When it's non-NULL, the function checks the event timestamp
with the given pointer.  The caller needs to pass the right reference
either to snd_seq_tick or snd_seq_realtime depending on the event
timestamp type.

A good news is that the above change allows us to remove the
snd_seq_prioq_cell_peek(), too, thus the patch actually reduces the
code size.

Reviewed-by: Nicolai Stange <nstange@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-22 09:17:59 +01:00
Takashi Iwai
20cbd5198e ALSA: hda - Revert power_save option default value
commit 40088dc4e1ead7df31728c73f5b51d71da18831d upstream.

With the commit 1ba8f9d30817 ("ALSA: hda: Add a power_save
blacklist"), we changed the default value of power_save option to -1
for processing the power-save blacklist.
Unfortunately, this seems breaking user-space applications that
actually read the power_save parameter value via sysfs and judge /
adjust the power-saving status.  They see the value -1 as if the
power-save is turned off, although the actual value is taken from
CONFIG_SND_HDA_POWER_SAVE_DEFAULT and it can be a positive.

So, overall, passing -1 there was no good idea.  Let's partially
revert it -- at least for power_save option default value is restored
again to CONFIG_SND_HDA_POWER_SAVE_DEFAULT.  Meanwhile, in this patch,
we keep the blacklist behavior and make is adjustable via the new
option, pm_blacklist.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=199073
Fixes: 1ba8f9d30817 ("ALSA: hda: Add a power_save blacklist")
Acked-by: Hans de Goede <hdegoede@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-22 09:17:59 +01:00
Takashi Iwai
238ba452eb ALSA: pcm: Fix UAF in snd_pcm_oss_get_formats()
commit 01c0b4265cc16bc1f43f475c5944c55c10d5768f upstream.

snd_pcm_oss_get_formats() has an obvious use-after-free around
snd_mask_test() calls, as spotted by syzbot.  The passed format_mask
argument is a pointer to the hw_params object that is freed before the
loop.  What a surprise that it has been present since the original
code of decades ago...

Reported-by: syzbot+4090700a4f13fccaf648@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-22 09:17:59 +01:00
Dan Carpenter
67f62d6ea4 ASoC: nuc900: Fix a loop timeout test
[ Upstream commit 65a12b3aafed5fc59f4ce41b22b752b1729e6701 ]

We should be finishing the loop with timeout set to zero but because
this is a post-op we finish with timeout == -1.

Fixes: 1082e2703a2d ("ASoC: NUC900/audio: add nuc900 audio driver support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-22 09:17:57 +01:00
Subhransu S. Prusty
1ab6efa2d4 ALSA: hda: Add Geminilake id to SKL_PLUS
[ Upstream commit 12ee4022f67f8854061b46e5c0a7ad6258ab66c2 ]

Geminilake is Skylake family platform. So add it's id to skl_plus check.

Fixes: 126cfa2f5e15 ("ALSA: hda: Add Geminilake HDMI codec ID")
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Cc: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-22 09:17:52 +01:00
Takashi Sakamoto
6818b4da09 ALSA: firewire-digi00x: handle all MIDI messages on streaming packets
[ Upstream commit 8820a4cf0cb4cd5c6540a9a18b2cedbdfd5a6891 ]

At a commit 9dc5d31cdceb ("ALSA: firewire-digi00x: handle MIDI messages in
isochronous packets"), a functionality to handle MIDI messages on
isochronous packet was supported. But this includes some of my
misunderstanding. This commit is to fix them.

For digi00x series, first data channel of data blocks in rx/tx packet
includes MIDI messages. The data channel has 0x80 in 8 bit of its MSB,
however it's against IEC 61883-6. Unique data format is applied:
 - Upper 4 bits of LSB represent port number.
  - 0x0: port 1.
  - 0x2: port 2.
  - 0xe: console port.
 - Lower 4 bits of LSB represent the number of included MIDI message bytes;
   0x0/0x1/0x2.
 - Two bytes of middle of this data channel have MIDI bytes.

Especially, MIDI messages from/to console surface are also transferred by
isochronous packets, as well as physical MIDI ports.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-22 09:17:48 +01:00
Takashi Sakamoto
ea5ac40906 ALSA: firewire-digi00x: add support for console models of Digi00x series
[ Upstream commit 13e005f9f933a35b5e55c9d36f151efe2a8383ec ]

Digi00x series includes two types of unit; rack and console. As long as
reading information on config rom of Digi 002 console, 'MODEL_ID' field
has a different value from the one on Digi 002 rack.

We've already got a test report from users with Digi 003 rack. We can
assume that console type and rack type has different value in the field.

This commit adds a device entry for console type. For following commits,
this commit also adds a member to 'struct snd_digi00x' to identify console
type.

$ cd linux-firewire-utils/src
$ python2 ./crpp < /sys/bus/firewire/devices/fw1/config_rom
               ROM header and bus information block
               -----------------------------------------------------------------
400  0404f9d0  bus_info_length 4, crc_length 4, crc 63952
404  31333934  bus_name "1394"
408  60647002  irmc 0, cmc 1, isc 1, bmc 0, cyc_clk_acc 100, max_rec 7 (256)
40c  00a07e00  company_id 00a07e     |
410  00a30000  device_id 0000a30000  | EUI-64 00a07e0000a30000

               root directory
               -----------------------------------------------------------------
414  00058a39  directory_length 5, crc 35385
418  0c0043a0  node capabilities
41c  04000001  hardware version
420  0300a07e  vendor
424  81000007  --> descriptor leaf at 440
428  d1000001  --> unit directory at 42c

               unit directory at 42c
               -----------------------------------------------------------------
42c  00046674  directory_length 4, crc 26228
430  120000a3  specifier id
434  13000001  version
438  17000001  model
43c  81000007  --> descriptor leaf at 458

               descriptor leaf at 440
               -----------------------------------------------------------------
440  00055913  leaf_length 5, crc 22803
444  000050f2  descriptor_type 00, specifier_ID 50f2
448  80000000
44c  44696769
450  64657369
454  676e0000

               descriptor leaf at 458
               -----------------------------------------------------------------
458  0004a6fd  leaf_length 4, crc 42749
45c  00000000  textual descriptor
460  00000000  minimal ASCII
464  44696769  "Digi"
468  20303032  " 002"

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-22 09:17:47 +01:00
Javier Martinez Canillas
6073a16492 ASoC: rt5677: Add OF device ID table
[ Upstream commit 7b87463edf3e2c16d72eeea3d1cf3c12bb5487c6 ]

The driver doesn't have a struct of_device_id table but supported devices
are registered via Device Trees. This is working on the assumption that a
I2C device registered via OF will always match a legacy I2C device ID and
that the MODALIAS reported will always be of the form i2c:<device>.

But this could change in the future so the correct approach is to have an
OF device ID table if the devices are registered via OF.

Before this patch:

$ modinfo sound/soc/codecs/snd-soc-rt5677.ko | grep alias
alias:          i2c:RT5677CE:00
alias:          i2c:rt5676
alias:          i2c:rt5677

After this patch:

$ modinfo sound/soc/codecs/snd-soc-rt5677.ko | grep alias
alias:          of:N*T*Crealtek,rt5677C*
alias:          of:N*T*Crealtek,rt5677
alias:          i2c:RT5677CE:00
alias:          i2c:rt5676
alias:          i2c:rt5677

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-22 09:17:47 +01:00
Takashi Sakamoto
90a6ae1ead ALSA: firewire-lib: add a quirk of packet without valid EOH in CIP format
[ Upstream commit 2128f78f75a36a34dfef0e127273c2f820c5c904 ]

In IEC 61883-1, when two quadlets CIP header is used, the most significant
bit in second CIP header stands. However, packets from units with MOTU
protocol version 3 have a quirk without this flag. Current packet streaming
layer handles this as protocol error.

This commit adds a new enumeration constant for this quirk, to handle MOTU
protocol version 3.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-22 09:17:44 +01:00
Kuninori Morimoto
28fdd86eb5 ASoC: rcar: ssi: don't set SSICR.CKDV = 000 with SSIWSR.CONT
[ Upstream commit 6b8530cc056efd4a11b034ca5b1e9f7e9563f553 ]

R-Car Datasheet is indicating "SSICR.CKDV = 000 is invalid when
SSIWSR.WS_MODE = 1 or SSIWSR.CONT = 1".
Current driver will set CONT, thus, we shouldn't use CKDV = 000.
This patch fixup it.

Reported-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-22 09:17:42 +01:00
Hans de Goede
24a401dd0f ASoC: rt5651: Fix regcache sync errors on resume
commit 2d30e9494f1ea320aaaad0cff9ddd92c87eac355 upstream.

The ALC5651 does not like multi-write accesses, avoid them. This fixes:

rt5651 i2c-10EC5651:00: Unable to sync registers 0x27-0x28. -121

Errors on resume (and all registers after the registers in the error not
being synced).

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-18 11:18:55 +01:00
Fabio Estevam
d156461370 ASoC: sgtl5000: Fix suspend/resume
commit a8992973edbb2555e956b90f6fe97c4bc14d761d upstream.

Commit 8419caa72702 ("ASoC: sgtl5000: Do not disable regulators in
SND_SOC_BIAS_OFF") causes the sgtl5000 to fail after a suspend/resume
sequence:

Playing WAVE '/media/a2002011001-e02.wav' : Signed 16 bit Little
Endian, Rate 44100 Hz, Stereo
aplay: pcm_write:2051: write error: Input/output error

The problem is caused by the fact that the aforementioned commit
dropped the cache handling, so re-introduce the register map
resync to fix the problem.

Suggested-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-18 11:18:55 +01:00
Dennis Wassenberg
5b8dce7403 ALSA: hda: add dock and led support for HP ProBook 640 G2
commit 099fd6ca0ad25bc19c5ade2ea4b25b8fadaa11b3 upstream.

This patch adds missing initialisation for HP 2013 UltraSlim Dock
Line-In/Out PINs and activates keyboard mute/micmute leds
for HP ProBook 640 G2

Signed-off-by: Dennis Wassenberg <dennis.wassenberg@secunet.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-18 11:18:51 +01:00
Dennis Wassenberg
5614f3a69d ALSA: hda: add dock and led support for HP EliteBook 820 G3
commit aea808172018ca01abf53db808323aed23281835 upstream.

This patch adds missing initialisation for HP 2013 UltraSlim Dock
Line-In/Out PINs and activates keyboard mute/micmute leds
for HP EliteBook 820 G3

Signed-off-by: Dennis Wassenberg <dennis.wassenberg@secunet.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-18 11:18:51 +01:00
Takashi Iwai
ec0011620b ALSA: seq: More protection for concurrent write and ioctl races
commit 7bd80091567789f1c0cb70eb4737aac8bcd2b6b9 upstream.

This patch is an attempt for further hardening against races between
the concurrent write and ioctls.  The previous fix d15d662e89fc
("ALSA: seq: Fix racy pool initializations") covered the race of the
pool initialization at writer and the pool resize ioctl by the
client->ioctl_mutex (CVE-2018-1000004).  However, basically this mutex
should be applied more widely to the whole write operation for
avoiding the unexpected pool operations by another thread.

The only change outside snd_seq_write() is the additional mutex
argument to helper functions, so that we can unlock / relock the given
mutex temporarily during schedule() call for blocking write.

Fixes: d15d662e89fc ("ALSA: seq: Fix racy pool initializations")
Reported-by: 范龙飞 <long7573@126.com>
Reported-by: Nicolai Stange <nstange@suse.de>
Reviewed-and-tested-by: Nicolai Stange <nstange@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-18 11:18:51 +01:00
Takashi Iwai
0d7252d33d ALSA: seq: Don't allow resizing pool in use
commit d85739367c6d56e475c281945c68fdb05ca74b4c upstream.

This is a fix for a (sort of) fallout in the recent commit
d15d662e89fc ("ALSA: seq: Fix racy pool initializations") for
CVE-2018-1000004.
As the pool resize deletes the existing cells, it may lead to a race
when another thread is writing concurrently, eventually resulting a
UAF.

A simple workaround is not to allow the pool resizing when the pool is
in use.  It's an invalid behavior in anyway.

Fixes: d15d662e89fc ("ALSA: seq: Fix racy pool initializations")
Reported-by: 范龙飞 <long7573@126.com>
Reported-by: Nicolai Stange <nstange@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-18 11:18:51 +01:00
Dennis Wassenberg
5191f41745 ALSA: hda/realtek - Make dock sound work on ThinkPad L570
commit e4c07b3b66b7d6a24c2fe3b1ddeff5cd9b378b3a upstream.

One version of Lenovo Thinkpad T570 did not use ALC298
(like other Kaby Lake devices). Instead it uses ALC292.
In order to make the Lenovo dock working with that codec
the dock quirk for ALC292 will be used.

Signed-off-by: Dennis Wassenberg <dennis.wassenberg@secunet.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-18 11:18:51 +01:00
Takashi Iwai
b992e8f506 ALSA: hda/realtek - Fix dock line-out volume on Dell Precision 7520
commit e312a869cd726c698a75caca0d9e5c22fd3f1534 upstream.

The dock line-out pin (NID 0x17 of ALC3254 codec) on Dell Precision
7520 may route to three different DACs, 0x02, 0x03 and 0x06.  The
first two DACS have the volume amp controls while the last one
doesn't.  And unfortunately, the auto-parser assigns this pin to DAC3,
resulting in the non-working volume control for the line out.

Fix it by disabling the routing to DAC3 on the corresponding pin.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=199029
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-18 11:18:51 +01:00
Benjamin Berg
f8521dba64 ALSA: hda/realtek: Limit mic boost on T480
commit 85981dfd6b0a0fd9ed87ca4a525981b67c21f098 upstream.

The internal mic boost on the T480 is too high. Fix this by applying the
ALC269_FIXUP_LIMIT_INT_MIC_BOOST fixup to the machine to limit the gain.

Signed-off-by: Benjamin Berg <bberg@redhat.com>
Tested-by: Benjamin Berg <bberg@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-18 11:18:51 +01:00
Takashi Iwai
61963d34e9 ALSA: hda - Fix pincfg at resume on Lenovo T470 dock
commit 71db96ddfa72671bd43cacdcc99ca178d90ba267 upstream.

We've added a quirk to enable the recent Lenovo dock support, where it
overwrites the pin configs of NID 0x17 and 19, not only updating the
pin config cache.  It works right after the boot, but the problem is
that the pin configs are occasionally cleared when the machine goes to
PM.  Meanwhile the quirk writes the pin configs only at the pre-probe,
so this won't be applied any longer.

For addressing that issue, this patch moves the code to overwrite the
pin configs into HDA_FIXUP_ACT_INIT section so that it's always
applied at both probe and resume time.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=195161
Fixes: 61fcf8ece9b6 ("ALSA: hda/realtek - Enable Thinkpad Dock device for ALC298 platform")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-11 16:21:28 +01:00
Hans de Goede
30f323752a ALSA: hda: Add a power_save blacklist
commit 1ba8f9d308174e647b864c36209b4d7934d99888 upstream.

On some boards setting power_save to a non 0 value leads to clicking /
popping sounds when ever we enter/leave powersaving mode. Ideally we would
figure out how to avoid these sounds, but that is not always feasible.

This commit adds a blacklist for devices where powersaving is known to
cause problems and disables it on these devices.

Note I tried to put this blacklist in userspace first:
https://github.com/systemd/systemd/pull/8128

But the systemd maintainers rightfully pointed out that it would be
impossible to then later remove entries once we actually find a way to
make power-saving work on listed boards without issues. Having this list
in the kernel will allow removal of the blacklist entry in the same commit
which fixes the clicks / plops.

The blacklist only applies to the default power_save module-option value,
if a user explicitly sets the module-option then the blacklist is not
used.

[ added an ifdef CONFIG_PM for the build error -- tiwai]

BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1525104
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=198611
Cc: stable@vger.kernel.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-11 16:21:28 +01:00
Erik Veijola
57adeebc8a ALSA: usb-audio: Add a quirck for B&W PX headphones
commit 240a8af929c7c57dcde28682725b29cf8474e8e5 upstream.

The capture interface doesn't work and the playback interface only
supports 48 kHz sampling rate even though it advertises more rates.

Signed-off-by: Erik Veijola <erik.veijola@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-11 16:21:28 +01:00
Abhijeet Kumar
1ec97b2a44 ASoC: nau8825: fix issue that pop noise when start capture
[ Upstream commit d070f7c703ef26e3db613f24206823f916272fc6 ]

In skylake platform, we hear a loud pop noise(0 dB) at start of
audio capture power up sequence. This patch removes the pop noise
from the recording by adding a delay before enabling ADC.

Signed-off-by: Abhijeet Kumar <abhijeet.kumar@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-03 10:23:22 +01:00
Arnd Bergmann
37b440a995 ALSA: hda/ca0132 - fix possible NULL pointer use
commit 46a049dae771b95e77ac6c823330f4a60f600236 upstream.

gcc-7 caught what it considers a NULL pointer dereference:

sound/pci/hda/patch_ca0132.c: In function 'dspio_scp.constprop':
sound/pci/hda/patch_ca0132.c:1487:4: error: argument 1 null where non-null expected [-Werror=nonnull]

This is plausible from looking at the function, as we compare 'reply'
to NULL earlier in it. I have not tried to analyze if there are constraints
that make it impossible to hit the bug, but adding another NULL check in
the end kills the warning and makes the function more robust.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-25 11:05:53 +01:00
Stefan Potyra
f99ff84b36 ASoC: rockchip: disable clock on error
[ Upstream commit c7b92172a61b91936be985cb9bc499a4ebc6489b ]

Disable the clocks in  rk_spdif_probe when an error occurs after one
of the clocks has been enabled previously.

Found by Linux Driver Verification project (linuxtesting.org).

Fixes: f874b80e1571 ASoC: rockchip: Add rockchip SPDIF transceiver driver
Signed-off-by: Stefan Potyra <Stefan.Potyra@elektrobit.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-25 11:05:48 +01:00
Arnd Bergmann
ec677e0687 ASoC: ux500: add MODULE_LICENSE tag
commit 1783c9d7cb7bc3181b9271665959b87280d98d8e upstream.

This adds MODULE_LICENSE/AUTHOR/DESCRIPTION tags to the ux500
platform drivers, to avoid these build warnings:

WARNING: modpost: missing MODULE_LICENSE() in sound/soc/ux500/snd-soc-ux500-plat-dma.o
WARNING: modpost: missing MODULE_LICENSE() in sound/soc/ux500/snd-soc-ux500-mach-mop500.o

The company no longer exists, so the email addresses of the authors
don't work any more, but I've added them anyway for consistency.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-25 11:05:44 +01:00
Takashi Iwai
869182f45e ALSA: seq: Fix racy pool initializations
commit d15d662e89fc667b90cd294b0eb45694e33144da upstream.

ALSA sequencer core initializes the event pool on demand by invoking
snd_seq_pool_init() when the first write happens and the pool is
empty.  Meanwhile user can reset the pool size manually via ioctl
concurrently, and this may lead to UAF or out-of-bound accesses since
the function tries to vmalloc / vfree the buffer.

A simple fix is to just wrap the snd_seq_pool_init() call with the
recently introduced client->ioctl_mutex; as the calls for
snd_seq_pool_init() from other side are always protected with this
mutex, we can avoid the race.

Reported-by: 范龙飞 <long7573@126.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-22 15:43:51 +01:00
Lassi Ylikojola
344c9ac65e ALSA: usb-audio: add implicit fb quirk for Behringer UFX1204
commit 5e35dc0338d85ccebacf3f77eca1e5dea73155e8 upstream.

Add quirk to ensure a sync endpoint is properly configured.
This patch is a fix for same symptoms on Behringer UFX1204 as patch
from Albertto Aquirre on Dec 8 2016 for Axe-Fx II.

Signed-off-by: Lassi Ylikojola <lassi.ylikojola@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-22 15:43:51 +01:00
Jan-Marek Glogowski
bb1a422bd6 ALSA: hda/realtek: PCI quirk for Fujitsu U7x7
commit fdcc968a3b290407bcba9d4c90e2fba6d8d928f1 upstream.

These laptops have a combined jack to attach headsets, the U727 on
the left, the U757 on the right, but a headsets microphone doesn't
work. Using hdajacksensetest I found that pin 0x19 changed the
present state when plugging the headset, in addition to 0x21, but
didn't have the correct configuration (shown as "Not connected").

So this sets the configuration to the same values as the headphone
pin 0x21 except for the device type microphone, which makes it
work correctly. With the patch the configured pins for U727 are

Pin 0x12 (Internal Mic, Mobile-In): present = No
Pin 0x14 (Internal Speaker): present = No
Pin 0x19 (Black Mic, Left side): present = No
Pin 0x1d (Internal Aux): present = No
Pin 0x21 (Black Headphone, Left side): present = No

Signed-off-by: Jan-Marek Glogowski <glogow@fbihome.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-22 15:43:50 +01:00
Kailang Yang
d8fff0e75a ALSA: hda/realtek - Enable Thinkpad Dock device for ALC298 platform
commit 61fcf8ece9b6b09450250c4ca40cc3b81a96a68d upstream.

Thinkpad Dock device support for ALC298 platform.
It need to use SSID for the quirk table.
Because IdeaPad also has ALC298 platform.
Use verb for the quirk table will confuse.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-22 15:43:50 +01:00
Kirill Marinushkin
31cb8df3f8 ALSA: usb-audio: Fix UAC2 get_ctl request with a RANGE attribute
commit 447cae58cecd69392b74a4a42cd0ab9cabd816af upstream.

The layout of the UAC2 Control request and response varies depending on
the request type. With the current implementation, only the Layout 2
Parameter Block (with the 2-byte sized RANGE attribute) is handled
properly. For the Control requests with the 1-byte sized RANGE attribute
(Bass Control, Mid Control, Tremble Control), the response is parsed
incorrectly.

This commit:
* fixes the wLength field value in the request
* fixes parsing the range values from the response

Fixes: 23caaf19b11e ("ALSA: usb-mixer: Add support for Audio Class v2.0")
Signed-off-by: Kirill Marinushkin <k.marinushkin@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-22 15:43:50 +01:00
Hui Wang
3dc694f4a4 ALSA: hda - Fix headset mic detection problem for two Dell machines
commit 3f2f7c553d077be6a30cb96b2976a2c940bf5335 upstream.

One of them has the codec of alc256 and the other one has the codec
of alc289.

Cc: <stable@vger.kernel.org>
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-22 15:43:50 +01:00
Takashi Iwai
eb10c5973e ASoC: skl: Fix kernel warning due to zero NHTL entry
commit 20a1ea2222e7cbf96e9bf8579362e971491e6aea upstream.

I got the following kernel warning when loading snd-soc-skl module on
Dell Latitude 7270 laptop:
 memremap attempted on mixed range 0x0000000000000000 size: 0x0
 WARNING: CPU: 0 PID: 484 at kernel/memremap.c:98 memremap+0x8a/0x180
 Call Trace:
  skl_nhlt_init+0x82/0xf0 [snd_soc_skl]
  skl_probe+0x2ee/0x7c0 [snd_soc_skl]
  ....

It seems that the machine doesn't support the SKL DSP gives the empty
NHLT entry, and it triggers the warning.  For avoiding it, let do the
zero check before calling memremap().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-17 13:21:17 +01:00
John Keeping
76376783a4 ASoC: rockchip: i2s: fix playback after runtime resume
commit c66234cfedfc3e6e3b62563a5f2c1562be09a35d upstream.

When restoring registers during runtime resume, we must not write to
I2S_TXDR which is the transmit FIFO as this queues up a sample to be
output and pushes all of the output channels down by one.

This can be demonstrated with the speaker-test utility:

	for i in a b c; do speaker-test -c 2 -s 1; done

which should play a test through the left speaker three times but if the
I2S hardware starts runtime suspended the first sample will be played
through the right speaker.

Fix this by marking I2S_TXDR as volatile (which also requires marking it
as readble, even though it technically isn't).  This seems to be the
most robust fix, the alternative of giving I2S_TXDR a default value is
more fragile since it does not prevent regcache writing to the register
in all circumstances.

While here, also fix the configuration of I2S_RXDR and I2S_FIFOLR; these
are not writable so they do not suffer from the same problem as I2S_TXDR
but reading from I2S_RXDR does suffer from a similar problem.

Fixes: f0447f6cbb20 ("ASoC: rockchip: i2s: restore register during runtime_suspend/resume cycle", 2016-09-07)
Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-17 13:21:17 +01:00
Kuninori Morimoto
1cb145c672 ASoC: rsnd: avoid duplicate free_irq()
commit e0936c3471a8411a5df327641fa3ffe12a2fb07b upstream.

commit 1f8754d4daea5f ("ASoC: rsnd: don't call free_irq() on
Parent SSI") fixed Parent SSI duplicate free_irq().
But on Renesas Sound, not only Parent SSI but also Multi SSI
have same issue.
This patch avoid duplicate free_irq() if it was not pure SSI.

Fixes: 1f8754d4daea5f ("ASoC: rsnd: don't call free_irq() on Parent SSI")
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: thongsyho <thong.ho.px@rvc.renesas.com>
Signed-off-by: Nhan Nguyen <nhan.nguyen.yb@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-13 12:36:03 +01:00
Kuninori Morimoto
24978c21f7 ASoC: rsnd: don't call free_irq() on Parent SSI
commit 1f8754d4daea5f257370a52a30fcb22798c54516 upstream.

If SSI uses shared pin, some SSI will be used as parent SSI.
Then, normal SSI's remove and Parent SSI's remove
(these are same SSI) will be called when unbind or remove timing.
In this case, free_irq() will be called twice.
This patch solve this issue.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Reported-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: thongsyho <thong.ho.px@rvc.renesas.com>
Signed-off-by: Nhan Nguyen <nhan.nguyen.yb@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-13 12:36:03 +01:00
Julian Scheel
a7de0e9718 ASoC: simple-card: Fix misleading error message
commit 7ac45d1635a4cd2e99a4b11903d4a2815ca1b27b upstream.

In case cpu could not be found the error message would always refer to
/codec/ not being found in DT. Fix this by catching the cpu node not found
case explicitly.

Signed-off-by: Julian Scheel <julian@jusst.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: thongsyho <thong.ho.px@rvc.renesas.com>
Signed-off-by: Nhan Nguyen <nhan.nguyen.yb@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-13 12:36:03 +01:00
Jesse Chan
374c84de94 ASoC: pcm512x: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE
commit 0cab20cec0b663b7be8e2be5998d5a4113647f86 upstream.

This change resolves a new compile-time warning
when built as a loadable module:

WARNING: modpost: missing MODULE_LICENSE() in sound/soc/codecs/snd-soc-pcm512x-spi.o
see include/linux/module.h for more information

This adds the license as "GPL v2", which matches the header of the file.

MODULE_DESCRIPTION and MODULE_AUTHOR are also added.

Signed-off-by: Jesse Chan <jc@linux.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-13 12:35:55 +01:00
Takashi Iwai
4b6e681f59 ALSA: hda - Apply the existing quirk to iMac 14,1
commit 031f335cda879450095873003abb03ae8ed3b74a upstream.

iMac 14,1 requires the same quirk as iMac 12,2, using GPIO 2 and 3 for
headphone and speaker output amps.  Add the codec SSID quirk entry
(106b:0600) accordingly.

BugLink: http://lkml.kernel.org/r/CAEw6Zyteav09VGHRfD5QwsfuWv5a43r0tFBNbfcHXoNrxVz7ew@mail.gmail.com
Reported-by: Freaky <freaky2000@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-23 19:57:04 +01:00
Takashi Iwai
fae704d5bd ALSA: hda - Apply headphone noise quirk for another Dell XPS 13 variant
commit e4c9fd10eb21376f44723c40ad12395089251c28 upstream.

There is another Dell XPS 13 variant (SSID 1028:082a) that requires
the existing fixup for reducing the headphone noise.
This patch adds the quirk entry for that.

BugLink: http://lkml.kernel.org/r/CAHXyb9ZCZJzVisuBARa+UORcjRERV8yokez=DP1_5O5isTz0ZA@mail.gmail.com
Reported-and-tested-by: Francisco G. <frangio.1@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-23 19:57:04 +01:00
Takashi Iwai
b9e168a0c6 ALSA: pcm: Remove yet superfluous WARN_ON()
commit 23b19b7b50fe1867da8d431eea9cd3e4b6328c2c upstream.

muldiv32() contains a snd_BUG_ON() (which is morphed as WARN_ON() with
debug option) for checking the case of 0 / 0.  This would be helpful
if this happens only as a logical error; however, since the hw refine
is performed with any data set provided by user, the inconsistent
values that can trigger such a condition might be passed easily.
Actually, syzbot caught this by passing some zero'ed old hw_params
ioctl.

So, having snd_BUG_ON() there is simply superfluous and rather
harmful to give unnecessary confusions.  Let's get rid of it.

Reported-by: syzbot+7e6ee55011deeebce15d@syzkaller.appspotmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-23 19:57:04 +01:00
Takashi Iwai
e4ff9f2946 ALSA: seq: Make ioctls race-free
commit b3defb791b26ea0683a93a4f49c77ec45ec96f10 upstream.

The ALSA sequencer ioctls have no protection against racy calls while
the concurrent operations may lead to interfere with each other.  As
reported recently, for example, the concurrent calls of setting client
pool with a combination of write calls may lead to either the
unkillable dead-lock or UAF.

As a slightly big hammer solution, this patch introduces the mutex to
make each ioctl exclusive.  Although this may reduce performance via
parallel ioctl calls, usually it's not demanded for sequencer usages,
hence it should be negligible.

Reported-by: Luo Quan <a4651386@163.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-23 19:57:04 +01:00
Takashi Iwai
43ff00f873 ALSA: aloop: Fix racy hw constraints adjustment
commit 898dfe4687f460ba337a01c11549f87269a13fa2 upstream.

The aloop driver tries to update the hw constraints of the connected
target on the cable of the opened PCM substream.  This is done by
adding the extra hw constraints rules referring to the substream
runtime->hw fields, while the other substream may update the runtime
hw of another side on the fly.

This is, however, racy and may result in the inconsistent values when
both PCM streams perform the prepare concurrently.  One of the reason
is that it overwrites the other's runtime->hw field; which is not only
racy but also broken when it's called before the open of another side
finishes.  And, since the reference to runtime->hw isn't protected,
the concurrent write may give the partial value update and become
inconsistent.

This patch is an attempt to fix and clean up:
- The prepare doesn't change the runtime->hw of other side any longer,
  but only update the cable->hw that is referred commonly.
- The extra rules refer to the loopback_pcm object instead of the
  runtime->hw.  The actual hw is deduced from cable->hw.
- The extra rules take the cable_lock to protect against the race.

Fixes: b1c73fc8e697 ("ALSA: snd-aloop: Fix hw_params restrictions and checking")
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-17 09:38:51 +01:00
Takashi Iwai
5af666d0dd ALSA: aloop: Fix inconsistent format due to incomplete rule
commit b088b53e20c7d09b5ab84c5688e609f478e5c417 upstream.

The extra hw constraint rule for the formats the aloop driver
introduced has a slight flaw, where it doesn't return a positive value
when the mask got changed.  It came from the fact that it's basically
a copy&paste from snd_hw_constraint_mask64().  The original code is
supposed to be a single-shot and it modifies the mask bits only once
and never after, while what we need for aloop is the dynamic hw rule
that limits the mask bits.

This difference results in the inconsistent state, as the hw_refine
doesn't apply the dependencies fully.  The worse and surprisingly
result is that it causes a crash in OSS emulation when multiple
full-duplex reads/writes are performed concurrently (I leave why it
triggers Oops to readers as a homework).

For fixing this, replace a few open-codes with the standard
snd_mask_*() macros.

Reported-by: syzbot+3902b5220e8ca27889ca@syzkaller.appspotmail.com
Fixes: b1c73fc8e697 ("ALSA: snd-aloop: Fix hw_params restrictions and checking")
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-17 09:38:51 +01:00
Takashi Iwai
01046dd834 ALSA: aloop: Release cable upon open error path
commit 9685347aa0a5c2869058ca6ab79fd8e93084a67f upstream.

The aloop runtime object and its assignment in the cable are left even
when opening a substream fails.  This doesn't mean any memory leak,
but it still keeps the invalid pointer that may be referred by the
another side of the cable spontaneously, which is a potential Oops
cause.

Clean up the cable assignment and the empty cable upon the error path
properly.

Fixes: 597603d615d2 ("ALSA: introduce the snd-aloop module for the PCM loopback")
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-17 09:38:51 +01:00