linux-kernel - Re: [RFC 1/2] HID: Extend the interface with idle requests

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Message-ID: <alpine.LNX.2.00.1303071552280.28677@pobox.suse.cz>
Date:	Thu, 7 Mar 2013 15:53:50 +0100 (CET)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Benjamin Tissoires <benjamin.tissoires@...il.com>
Cc:	Benjamin Tissoires <benjamin.tissoires@...hat.com>,
	Henrik Rydberg <rydberg@...omail.se>,
	Stephane Chatty <chatty@...c.fr>,
	David Herrmann <dh.herrmann@...il.com>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC 1/2] HID: Extend the interface with idle requests

On Thu, 7 Mar 2013, Benjamin Tissoires wrote:

> >> +static int usbhid_idle(struct hid_device *hid, int report, int idle,
> >> +             int reqtype)
> >
> > Where does the need for passing the report argument come from please?
> 
> Well, I haven't checked in the USB spec, but hid_set_idle() in
> usbhid/hid-core.c does require the reportID, so I add it to the
> request.
> I just gave a quick look at the HID/I2C spec, and it also requires the
> report ID. The set_idle request is report specific.

You are right, I have missed the special meaning of lower byte of wValue.

Okay, I think it makes sense. I will be taking the patches.

Thanks Benjamin.

-- 
Jiri Kosina
SUSE Labs
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