linux-stable.git/sound, branch v3.16.35

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

2016-04-30T22:06:08+00:00

commit 4a07083ed613644c96c34a7dd2853dc5d7c70902 upstream.

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 
Signed-off-by: Takashi Iwai 
Signed-off-by: Ben Hutchings

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

2016-04-30T22:06:07+00:00

commit e549d190f7b5f94e9ab36bd965028112914d010d upstream.

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
Signed-off-by: Hui Wang 
Signed-off-by: Takashi Iwai 
Signed-off-by: Ben Hutchings

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

2016-04-30T22:06:06+00:00

commit 836b34a935abc91e13e63053d0a83b24dfb5ea78 upstream.

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 
Signed-off-by: Vladis Dronov 
Signed-off-by: Takashi Iwai 
Signed-off-by: Ben Hutchings

ALSA: usb-audio: Minor code cleanup in create_fixed_stream_quirk()

2016-04-30T22:06:06+00:00

commit 902eb7fd1e4af3ac69b9b30f8373f118c92b9729 upstream.

Just a minor code cleanup: unify the error paths.

Signed-off-by: Takashi Iwai 
Signed-off-by: Ben Hutchings

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

2016-04-30T22:06:04+00:00

commit 83a9efb5b8170b7cffef4f62656656e1d8ad2ccd upstream.

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 
Signed-off-by: Takashi Iwai 
Signed-off-by: Ben Hutchings

ALSA: hda - Fix white noise on Asus N750JV headphone

2016-04-30T22:06:04+00:00

commit 9d4dc5840f93bcb002fa311693349deae7702bc5 upstream.

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 
Signed-off-by: Takashi Iwai 
Signed-off-by: Ben Hutchings

ALSA: hda - Asus N750JV external subwoofer fixup

2016-04-30T22:06:04+00:00

commit 70cf2cbd685e218c3ffd105d9fb6cf0f8d767481 upstream.

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 
Signed-off-by: Takashi Iwai 
Signed-off-by: Ben Hutchings

ALSA: hda - Fix unconditional GPIO toggle via automute

2016-04-30T22:06:00+00:00

commit 1f7c6658962fa1260c1658d681bd6bb0c746b99a upstream.

Cirrus HD-audio driver may adjust GPIO pins for EAPD dynamically
depending on the jack plug state.  This works fine for the auto-mute
mode where the speaker gets muted upon the HP jack plug.   OTOH, when
the auto-mute mode is off, this turns off the EAPD unexpectedly
depending on the jack state, which results in the silent speaker
output.

This patch fixes the silent speaker output issue by setting GPIO bits
constantly when the auto-mute mode is off.

Reported-and-tested-by: moosotc@gmail.com
Signed-off-by: Takashi Iwai 
Signed-off-by: Ben Hutchings

ALSA: intel8x0: Add clock quirk entry for AD1981B on IBM ThinkPad X41.

2016-04-30T22:05:58+00:00

commit 4061db03dd71d195b9973ee466f6ed32f6a3fc16 upstream.

The clock measurement on the AC'97 audio card found in the IBM ThinkPad X41
will often fail, so add a quirk entry to fix it.

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=441087
Signed-off-by: Vittorio Gambaletta 
Signed-off-by: Takashi Iwai 
Signed-off-by: Ben Hutchings

ALSA: hda - Add new GPU codec ID 0x10de0082 to snd-hda

2016-04-30T22:05:58+00:00

commit 2d369c748c2ecc2a012ee85412a04007e67913ec upstream.

Vendor ID 0x10de0082 is used by a yet-to-be-named GPU chip.

This chip also has the 2-ch audio swapping bug, so patch_nvhdmi is
appropriate here.

Signed-off-by: Aaron Plattner 
Signed-off-by: Takashi Iwai 
[bwh: Backported to 3.16: don't use HDA_CODEC_ENTRY()]
Signed-off-by: Ben Hutchings