Re: [PATCH v6 7/8, needs improvement] hid: add suspend/resume hooks for hid drivers

Jiri Kosina
2010-04-11T18:31:22Z

On Sun, 11 Apr 2010, Bruno Prémont wrote:

> > We should also consider putting the hook calls into bluetooth
> > implementation as well (though there is currently no driver using it, but
> > I don't know, maybe Wacom could benefit from it as well).
>
> Where do I find the bluetooth HID bits? I've been searching through kernel
> sources (under drivers/) but did not find bluetooth code trying to
> register a HID device...

They are in net/bluetooth/hidp. Not really obvious, I know, but Marcel
wanted it this way.

> As far as I understand the code, in auto-suspend case if the driver
> sends commands to the device it will have to call usbhid_wait_io().
> Please correct me if I'm wrong!

It's not needed. There is a queuing mechanism in place on
'resumption_waker' workqueue.

--
Jiri Kosina
SUSE Labs, Novell Inc.