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Subject: Re: Power frequency detection.
From: Andy Walls <awalls@md.metrocast.net>
To: Theodore Kilgore <kilgota@banach.math.auburn.edu>
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On Sun, 2010-12-19 at 18:21 -0600, Theodore Kilgore wrote:

> If the controls are locked while the workqueue is doing the streaming, 
> then probably that does fix the problem? Most likely, that is the simplest 
> thing to do. 

Drivers are allowed to return -EBUSY per the V4L2 spec.

http://linuxtv.org/downloads/v4l-dvb-apis/vidioc-g-ctrl.html
http://linuxtv.org/downloads/v4l-dvb-apis/vidioc-g-ext-ctrls.html

Regards,
Andy


> Theodore Kilgore