linux-kernel - Re: [PATCH v2 0/9] Support of Nexio 42" and new default class for hid-multitouch

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Date:	Sun, 3 Feb 2013 14:07:31 +0100
From:	"Henrik Rydberg" <rydberg@...omail.se>
To:	Benjamin Tissoires <benjamin.tissoires@...il.com>
Cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Jiri Kosina <jkosina@...e.cz>,
	Stephane Chatty <chatty@...c.fr>, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/9] Support of Nexio 42" and new default class for
 hid-multitouch

Hi Benjamin,

> so, this is the v2 of the support of win7/8 devices.

Looks like it is getting there, thanks.

> changes since v1:
> - removed the "optimization" patches, as the benefit was minimum
> - introduce a new callback "report" in hid-core that drivers can use to treat the
>   report by having it entirely parsed
> - rely on this new hook to support Nexio 42"

As noted in the patches comments, using raw_event() seems sufficient.

> side notes:
> - I've tested removing the heavy call to kzalloc in hid_input_field. The results
>   are disapointing -> the processing time remains the same.
> - I've also tested not to rely on .event hook in hid-multitouch but only on .report.
>   Idem, I thought it would reduce the code of hid-multitouch and will enhance its
>   processing time, but the results are a roughly same number of lines for hid-multitouch
>   and the same processing time... :(
> - these 2 tests helped in cleaning the patch set from the last time.
> 
> And again, finally, I've pass all the 40 regression tests of my db. \o/

Nice. :-)

Thanks,
Henrik
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