linux-kernel - Re: [PATCH v2] i2c-hid: fix length for set/get report in i2c hid

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Date:	Thu, 4 Apr 2013 09:55:16 +0200
From:	Benjamin Tissoires <benjamin.tissoires@...il.com>
To:	Jiri Kosina <jkosina@...e.cz>
Cc:	Huzefa Kankroliwala <huzefa.nomanx.kankroliwala@...el.com>,
	mika.westerberg@...el.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] i2c-hid: fix length for set/get report in i2c hid

On Thu, Apr 4, 2013 at 9:47 AM, Jiri Kosina <jkosina@...e.cz> wrote:
> On Wed, 3 Apr 2013, Huzefa Kankroliwala wrote:
>
>> With the current i2c hid driver set/get report does not work
>> as expected, for e.g sensor hub properties like power state,
>> frequency etc is not set properly on the device as a result
>> we do not get events.
>> The problem is that i2c hid driver in function i2c_hid_request
>> sets length equal to default buffer size for which the sensor
>> hub does not respond on get/set commands. Use report length
>> and calculate it based on report size and id.
>>
>> Reviewed-by: Mika Westerberg <mika.westerberg@...ux.intel.com>
>> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
>> Signed-off-by: Huzefa Kankroliwala <huzefa.nomanx.kankroliwala@...el.com>
>
> This is based on some old version of the driver though. Could you please
> rebase it so that it applies on top of for-next branch of
>
>         git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid.git
>
> and resend? (actually rebasing on Linus' current tree would be absolutely
> sufficient).

Actually, the patch goes smoothly on your for-next branch on my computer...
And there is no point rebasing it on top of Linus' tree as the
i2c_hid_request() callback is scheduled for 3.10.

Could you double check Jiri?

Thanks,
Benjamin

>
> Thanks.
>
> --
> Jiri Kosina
> SUSE Labs
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