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SubjectRe: [PATCH v3] usb: devio: Add ioctl to disallow detaching kernel USB drivers.
On Thu, Feb 04, 2016 at 12:20:57AM -0300, Emilio López wrote:
> From: Reilly Grant <reillyg@chromium.org>
>
> The new USBDEVFS_DROP_PRIVILEGES ioctl allows a process to voluntarily
> relinquish the ability to issue other ioctls that may interfere with
> other processes and drivers that have claimed an interface on the
> device.
>
> Signed-off-by: Reilly Grant <reillyg@chromium.org>
> Signed-off-by: Emilio López <emilio.lopez@collabora.co.uk>
>
> ---
>
> Changes in v3:
> - Switch ioctl to use a __u32 given the iface qty is capped at 32
> - Reword comments as requested by Alan
> - Allow callers to shrink the allowed interfaces mask

No documentation? Proof it works? Test scripts?

This isn't a trivial feature to add, how do we know it is correct?

thanks,

greg k-h

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