litmus-rt-imx6.git/sound/usb, branch master

ALSA: usb-audio: Fix deadlocks at resuming

2014-07-14T07:53:01+00:00

The recent addition of the USB audio mixer suspend/resume may lead to
deadlocks when the driver tries to call usb_autopm_get_interface()
recursively, since the function tries to sync with the finish of the
other calls.  For avoiding it, introduce a flag indicating the resume
operation and avoids the recursive usb_autopm_get_interface() calls
during the resume.

Reported-and-tested-by: Bryan Quigley 
Signed-off-by: Takashi Iwai

ALSA: usb-audio: Save mixer status only once at suspend

2014-07-14T07:53:00+00:00

The suspend callback of usb-audio driver may be called multiple times
per suspend when multiple USB interfaces are bound to a single sound
card instance.  In such a case, it's superfluous to save the mixer
values multiple times.  This patch fixes it by checking the counter.

Signed-off-by: Takashi Iwai

ALSA: usb-audio: Use SNDRV_DEV_CODEC for mixer objects

2014-07-14T07:53:00+00:00

Instead of SNDRV_DEV_LOWLEVEL, use SNDRV_DEV_CODEC type for mixer
objects so that they are managed in a proper release order.
No functional change at this point.

Signed-off-by: Takashi Iwai

ALSA: usb-audio: Resume mixer values properly

2014-07-14T07:53:00+00:00

Implement reset_resume callback so that the mixer values are properly
restored.  Still no boot quirks are called, so it might not work well
on some devices.

Signed-off-by: Takashi Iwai

ALSA: usb-audio: Add missing kconfig dependecy

2014-02-20T19:06:11+00:00

commit 4fa71c1550a857ff1dbfe9e99acc1f4cfec5f0d0 upstream.

The commit 44dcbbb1cd61 introduced the usage of bitreverse helpers but
forgot to add the dependency.  This patch adds the selection for
CONFIG_BITREVERSE.

Fixes: 44dcbbb1cd61 ('ALSA: snd-usb: add support for bit-reversed byte formats')
Reported-by: Fengguang Wu 
Signed-off-by: Takashi Iwai 
Signed-off-by: Greg Kroah-Hartman

ALSA: 6fire: Fix probe of multiple cards

2013-11-29T19:11:44+00:00

commit 9b389a8a022110b4bc055a19b888283544d9eba6 upstream.

The probe code of snd-usb-6fire driver overrides the devices[] pointer
wrongly without checking whether it's already occupied or not.  This
would screw up the device disconnection later.

Spotted by coverity CID 141423.

Signed-off-by: Takashi Iwai 
Signed-off-by: Greg Kroah-Hartman

ALSA: us122l: Fix pcm_usb_stream mmapping regression

2013-11-04T12:31:06+00:00

commit ac536a848a1643e4b87e8fbd376a63091afc2ccc upstream.

The pcm_usb_stream plugin requires the mremap explicitly for the read
buffer, as it expands itself once after reading the required size.
But the commit [314e51b9: mm: kill vma flag VM_RESERVED and
mm->reserved_vm counter] converted blindly to a combination of
VM_DONTEXPAND | VM_DONTDUMP like other normal drivers, and this
resulted in the failure of mremap().

For fixing this regression, we need to remove VM_DONTEXPAND for the
read-buffer mmap.

Reported-and-tested-by: James Miller 
Signed-off-by: Takashi Iwai 
Signed-off-by: Greg Kroah-Hartman

ALSA: snd-usb-usx2y: remove bogus frame checks

2013-10-18T14:45:43+00:00

commit a9d14bc0b188a822e42787d01e56c06fe9750162 upstream.

The frame check in i_usX2Y_urb_complete() and
i_usX2Y_usbpcm_urb_complete() is bogus and produces false positives as
described in this LAU thread:

  http://linuxaudio.org/mailarchive/lau/2013/5/20/200177

This patch removes the check code entirely.

Cc: fzu@wemgehoertderstaat.de
Reported-by: Dr Nicholas J Bailey 
Suggested-by: Takashi Iwai 
Signed-off-by: Daniel Mack 
Signed-off-by: Takashi Iwai 
Signed-off-by: Greg Kroah-Hartman

ALSA: 6fire: make buffers DMA-able (midi)

2013-08-20T15:43:04+00:00

commit 4c2aee0032b70083dafebd733ed9c774633b2fa3 upstream.

Patch makes midi output buffer DMA-able by allocating it separately.

Signed-off-by: Torsten Schenk 
Signed-off-by: Takashi Iwai 
Signed-off-by: Greg Kroah-Hartman

ALSA: 6fire: make buffers DMA-able (pcm)

2013-08-20T15:43:04+00:00

commit 5ece263f1d93fba8d992e67e3ab8a71acf674db9 upstream.

Patch makes pcm buffers DMA-able by allocating each one separately.

Signed-off-by: Torsten Schenk 
Signed-off-by: Takashi Iwai 
Signed-off-by: Greg Kroah-Hartman