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SubjectRe: [PATCH/RFC] Resolve 2 year old issue with different demands on EVIOCGRAB
Hi Neil,

On Fri, Aug 15, 2008 at 12:02:09PM +1000, Neil Brown wrote:
>
> I'll let the comments in the patch below to most of the talking.
> This came up because I wanted to use EVIOCGRAB in some code on an
> Openmoko Freerunner, and found that EVIOCGRAG does different things on
> that kernel to elsewhere. I looked into why, and found that there was
> a good reason but that the issues hadn't been completely resolved. I
> hope to help resolve the issues so that EVIOCGRAB can behave the same
> everywhere, and still meet everybody's needs.
>
> I would have Cc:ed to Magnus Vigerlof who wrote the original patch on
> which this is based, but his Email address doesn't appear in lkml.org.
>

I don't think this is a viable solution - there are other "good"
handlers beisdes evdev, such as rfkill-input, which will still get
disabled by the "lightweight" grabs.

Overall I think it is application's responsibility to not use
multiplexing devices if they use evdev, bit I can consider adding a new
interface (maybe another ioctl) that would disable event delivery though
certain interfaces for a device.

--
Dmitry


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