[alsa-devel] [PATCH v3 00/11] ALSA: usb-audio: fix playback/capture concurrent usage

[Eldad Zack]

On Mon, 26 Aug 2013, Nikolay Martynov wrote:

> Hi.
> 
>   I've tried this patch and can confirm that it fixes the issue with CM108 based USB headset I've described on the list several days ago (tried with Skype).
>   Thank you!

That's great - I'm glad it solved your issue and thank you for testing!

There's still some issues I bump into at the moment, hopefully I will 
find the time to resolve them before the 3.13 window.

Cheers,
Eldad

> 
> 
> 2013/8/25 Eldad Zack <eldad at fogrefinery.com>
>       Hi,
> 
>       This patch series attempts to fix a long standing problem with the concurrent
>       usage of playback and capture on implicit feedback devices.
> 
>       Applies against current for-next (HEAD 68538bf2bce557c3b5fe8c59b034d45352500db1 ).
> 
>       v2:
>        http://mailman.alsa-project.org/pipermail/alsa-devel/2013-August/065649.html
>       v1:
>        http://mailman.alsa-project.org/pipermail/alsa-devel/2013-August/065517.html
> 
>        * Changed "altset_idx" to "altsetting" thanks to Clemens' clarification.
> 
>        #3: Thanks to Daniel's test, fixed a NULL dereference caused by userspace calling
>            snd_pcm_open() and then snd_pcm_close() immediately.
>        #8: subs->altset_idx was left intact, since it corresponds to the array index.
>        #10: this patch now removed subs->altset_idx, but also changes the check to be
>             performed against fmt->altsetting.
>        #11: New. This changes the name of snd_usb_endpoint member alt_idx to altsetting
>             for the same reason Clemens described.
> 
>       Clemens and Daniel - thank you very much for your help!
> 
>       Cheers,
>       Eldad
> 
>       Eldad Zack (11):
>         ALSA: usb-audio: remove unused parameter from sync_ep_set_params
>         ALSA: usb-audio: remove deactivate_endpoints()
>         ALSA: usb-audio: prevent NULL dereference on stop trigger
>         ALSA: usb-audio: don't deactivate URBs on in-use EP
>         ALSA: usb-audio: void return type of snd_usb_endpoint_deactivate()
>         ALSA: usb-audio: clear SUBSTREAM_FLAG_SYNC_EP_STARTED on error
>         ALSA: usb-audio: correct ep use_count semantics (add set_param flag)
>         ALSA: usb-audio: conditional interface altsetting
>         ALSA: usb-audio: conditional concurrent usage of endpoint
>         ALSA: usb-audio: remove altset_idx from snd_usb_substream
>         ALSA: usb-audio: rename alt_idx to altsetting
> 
>        sound/usb/card.h     |   4 +-
>        sound/usb/endpoint.c |  82 ++++++++++++++++++-------
>        sound/usb/endpoint.h |  11 +++-
>        sound/usb/pcm.c      | 168 ++++++++++++++++++++++++++++++++++++++-------------
>        sound/usb/pcm.h      |   2 +
>        sound/usb/proc.c     |   4 +-
>        6 files changed, 201 insertions(+), 70 deletions(-)
> 
>       --
>       1.8.1.5
> 
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> 
> 
> 
> 
> --
> Martynov Nikolay.
> Email: mar.kolya at gmail.com
> 
>