linux-kernel - Re: [rtc-linux] Re: [PATCH 2/2 RESEND] rtc: rtc-hid-sensor-time: enable HID input processing early

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Date:	Fri, 09 Aug 2013 18:33:43 +0200
From:	Alexander Holler <holler@...oftware.de>
To:	rtc-linux@...glegroups.com
CC:	Jiri Kosina <jkosina@...e.cz>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Alessandro Zummo <a.zummo@...ertech.it>,
	Andrew de los Reyes <adlr@...omium.org>
Subject: Re: [rtc-linux] Re: [PATCH 2/2 RESEND] rtc: rtc-hid-sensor-time:
 enable HID input processing early

Am 09.08.2013 18:21, schrieb Alexander Holler:
> I've now also verified if hid-sensor-hub receives an event with
> sensor_hub_raw_event() in the error-path (hid_device_io_stop() called
> and probe() failed), and this still *does* happen. That event (input
> report) doesn't come through hid-sensor-hub to my driver, but I think
> this is because of my call to sensor_hub_remove_callback() which is in
> the error path too.
> So I actually wonder why the input report still is reported from the
> hid-subsystem to hid-sensor-hub, even after I've called
> hid_device_io_stop() and probe() failed.
> Maybe everything is still ok and I just got confused with the somehow
> complicate interactions between the usb- and hid-subsystem,
> hid-sensor-hub (which uses MFD) and rtc-hid-sensor-time.

Adding some more stuff to the confusion: Currently I think it is correct 
that hid-sensor-hub still receives the event, even after 
rtc-hid-sensor-time called hid_device_io_stop() and probe() failed. The 
reason the same reason, why hid-sensor-hub uses mfd, the actual hardware 
device might be shared by different drivers (therfor -hub).

Regards,

Alexander Holler
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