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SubjectRe: [RFC PATCH v8 4/4] sound/usb: Use Media Controller API to share media resources
Hi Hans,

On 11/20/18 4:54 AM, Hans Verkuil wrote:
> On 11/02/2018 01:31 AM, wrote:
>> From: Shuah Khan <>
>> Change ALSA driver to use Media Controller API to share media resources
>> with DVB, and V4L2 drivers on a AU0828 media device.
>> Media Controller specific initialization is done after sound card is
>> registered. ALSA creates Media interface and entity function graph
>> nodes for Control, Mixer, PCM Playback, and PCM Capture devices.
>> snd_usb_hw_params() will call Media Controller enable source handler
>> interface to request the media resource. If resource request is granted,
>> it will release it from snd_usb_hw_free(). If resource is busy, -EBUSY is
>> returned.
>> Media specific cleanup is done in usb_audio_disconnect().
>> Signed-off-by: Shuah Khan <>

Thanks for the review. Fixing them all in the next revision.

-- Shuah

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