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Re: [PATCH v4] rfkill: create useful userspace interface

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Hi Johannes,

> The new code added by this patch will make rfkill create
> a misc character device /dev/rfkill that userspace can use
> to control rfkill soft blocks and get status of devices as
> well as events when the status changes.
> 
> Using it is very simple -- when you open it you can read
> a number of times to get the initial state, and every
> further read blocks (you can poll) on getting the next
> event from the kernel. The same structure you read is
> also used when writing to it to change the soft block of
> a given device, all devices of a given type, or all
> devices.
> 
> This also makes CONFIG_RFKILL_INPUT selectable again in
> order to be able to test without it present since its
> functionality can now be replaced by userspace entirely
> and distros and users may not want the input part of
> rfkill interfering with their userspace code. We will
> also write a userspace daemon to handle all that and
> consequently add the input code to the feature removal
> schedule.
> 
> Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
> ---
> v4: set default global state from userspace for rfkill hotplug
>     (pointed out by Marcel)

I have tested this patch with a prototype code for ConnMan and it works
fine here.

Acked-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>
Tested-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>

Regards

Marcel


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