linux.git/sound, branch v4.6-rc2

Merge tag 'sound-4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

2016-04-01T22:13:23+00:00

Pull sound fixes from Takashi Iwai:
 "A collection of small fixes:

   - a fix in ALSA timer core to avoid possible BUG() trigger
   - a fix in ALSA timer core 32bit compat layer
   - a few HD-audio quirks for ASUS and HP machines
   - AMD HD-audio HDMI controller quirks
   - fixes of USB-audio double-free at some error paths
   - a fix for memory leak in DICE driver at hotunplug"

* tag 'sound-4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: timer: Use mod_timer() for rearming the system timer
  ALSA: hda - fix front mic problem for a HP desktop
  ALSA: usb-audio: Fix double-free in error paths after snd_usb_add_audio_stream() call
  ALSA: hda: add AMD Polaris-10/11 AZ PCI IDs with proper driver caps
  ALSA: dice: fix memory leak when unplugging
  ALSA: hda - Apply fix for white noise on Asus N550JV, too
  ALSA: hda - Fix white noise on Asus N750JV headphone
  ALSA: hda - Asus N750JV external subwoofer fixup
  ALSA: timer: fix gparams ioctl compatibility for different architectures

ALSA: timer: Use mod_timer() for rearming the system timer

2016-04-01T10:28:16+00:00

ALSA system timer backend stops the timer via del_timer() without sync
and leaves del_timer_sync() at the close instead.  This is because of
the restriction by the design of ALSA timer: namely, the stop callback
may be called from the timer handler, and calling the sync shall lead
to a hangup.  However, this also triggers a kernel BUG() when the
timer is rearmed immediately after stopping without sync:
 kernel BUG at kernel/time/timer.c:966!
 Call Trace:
  
  [] snd_timer_s_start+0x13e/0x1a0
  [] snd_timer_interrupt+0x504/0xec0
  [] ? debug_check_no_locks_freed+0x290/0x290
  [] snd_timer_s_function+0xb4/0x120
  [] call_timer_fn+0x162/0x520
  [] ? call_timer_fn+0xcd/0x520
  [] ? snd_timer_interrupt+0xec0/0xec0
  ....

It's the place where add_timer() checks the pending timer.  It's clear
that this may happen after the immediate restart without sync in our
cases.

So, the workaround here is just to use mod_timer() instead of
add_timer().  This looks like a band-aid fix, but it's a right move,
as snd_timer_interrupt() takes care of the continuous rearm of timer.

Reported-by: Jiri Slaby 
Cc: 
Signed-off-by: Takashi Iwai

ALSA: hda - fix front mic problem for a HP desktop

2016-04-01T05:36:39+00:00

The front mic jack (pink color) can't detect any plug or unplug. After
applying this fix, both detecting function and recording function
work well.

BugLink: https://bugs.launchpad.net/bugs/1564712
Cc: stable@vger.kernel.org
Signed-off-by: Hui Wang 
Signed-off-by: Takashi Iwai

ALSA: usb-audio: Fix double-free in error paths after snd_usb_add_audio_stream() call

2016-03-31T16:07:31+00:00

create_fixed_stream_quirk(), snd_usb_parse_audio_interface() and
create_uaxx_quirk() functions allocate the audioformat object by themselves
and free it upon error before returning. However, once the object is linked
to a stream, it's freed again in snd_usb_audio_pcm_free(), thus it'll be
double-freed, eventually resulting in a memory corruption.

This patch fixes these failures in the error paths by unlinking the audioformat
object before freeing it.

Based on a patch by Takashi Iwai 

[Note for stable backports:
 this patch requires the commit 902eb7fd1e4a ('ALSA: usb-audio: Minor
 code cleanup in create_fixed_stream_quirk()')]

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1283358
Reported-by: Ralf Spenneberg 
Cc:  # see the note above
Signed-off-by: Vladis Dronov 
Signed-off-by: Takashi Iwai

ALSA: hda: add AMD Polaris-10/11 AZ PCI IDs with proper driver caps

2016-03-31T12:59:20+00:00

This commit fixes garbled audio on Polaris-10/11 variants

Signed-off-by: Maruthi Bayyavarapu 
Reviewed-by: Alex Deucher 
Acked-by: Christian König 
Signed-off-by: Takashi Iwai

ALSA: dice: fix memory leak when unplugging

2016-03-28T07:32:57+00:00

When sound card is going to be released, dice private data is
also released. Then all of data should be released. However,
stream data is not released. This causes memory leak when
unplugging dice unit.

This commit fixes the bug.

Fixes: 4bdc495c87b3('ALSA: dice: handle several PCM substreams when any isochronous streams are available')
Signed-off-by: Takashi Sakamoto 
Signed-off-by: Takashi Iwai

ALSA: hda - Apply fix for white noise on Asus N550JV, too

2016-03-23T13:51:09+00:00

Apply the new fixup that is used for ASUS N750JV to another similar
model, N500JV, too, for reducing the headphone noise.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=115181
Signed-off-by: Bobi Mihalca 
Cc: 
Signed-off-by: Takashi Iwai

ALSA: hda - Fix white noise on Asus N750JV headphone

2016-03-23T13:45:06+00:00

For reducing the noise from the headphone output on ASUS N750JV,
call the existing fixup, alc_fixup_auto_mute_via_amp(), additionally.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=115181
Signed-off-by: Bobi Mihalca 
Cc: 
Signed-off-by: Takashi Iwai

ALSA: hda - Asus N750JV external subwoofer fixup

2016-03-23T13:41:15+00:00

ASUS N750JV needs the same fixup as N550 for enabling its subwoofer.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=115181
Signed-off-by: Bobi Mihalca 
Cc: 
Signed-off-by: Takashi Iwai

ALSA: timer: fix gparams ioctl compatibility for different architectures

2016-03-23T07:06:16+00:00

'struct snd_timer_gparams' includes some members with 'unsigned long',
therefore its size differs depending on data models of architecture. As
a result, x86/x32 applications fail to execute ioctl(2) with
SNDRV_TIMER_GPARAMS command on x86_64 machine.

This commit fixes this bug by adding a pair of structure and ioctl
command for the compatibility.

Signed-off-by: Takashi Sakamoto 
Signed-off-by: Takashi Iwai