linux-kernel - Re: [PATCH] Driver for Primax keyboards violating USB HID spec

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Message-ID: <CAA_E9NH0EznO9xc7L=5GuqbZyFSWQU1J1HWzAYbuP5YTFzuXaw@mail.gmail.com>
Date:	Mon, 17 Oct 2011 12:21:16 -0700
From:	Terry Lambert <tlambert@...omium.org>
To:	Jiri Kosina <jkosina@...e.cz>
Cc:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Driver for Primax keyboards violating USB HID spec

Cool, thanks! I was mildly unsure of that anyway, and had copied it
from a similar one for the Microsoft HID driver.

-- Terry

On Mon, Oct 17, 2011 at 8:11 AM, Jiri Kosina <jkosina@...e.cz> wrote:
> On Fri, 14 Oct 2011, Terry Lambert wrote:
>
>> Primax keyboards with the issue this driver addresses report modifier
>> keys as in band key events instead of as out of band modifier bits,
>> resulting in the modifier keys generating key up events immediately
>> before the keys they are intended to modify.  This driver rewrites
>> the raw report data from such keyboards into USB HID 1.11 compliant
>> report data.  It only matches the USB vendor and product IDs for the
>> keyboard it has been tested on. Since there are several keyboards,
>> notably a number of laptops and folding USB keyboards known to have
>> similar unresolved problem reports, the list is expected to grow.
>>
>> Signed-off-by: Terry Lambert <tlambert@...omium.org>
>> ---
>>  drivers/hid/Kconfig      |    8 +++
>>  drivers/hid/Makefile     |    1 +
>>  drivers/hid/hid-core.c   |    1 +
>>  drivers/hid/hid-ids.h    |    3 +
>>  drivers/hid/hid-primax.c |  117 ++++++++++++++++++++++++++++++++++++++++++++++
>>  5 files changed, 130 insertions(+), 0 deletions(-)
>>  create mode 100644 drivers/hid/hid-primax.c
>>
>> diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
>> index 1130a89..a097e17 100644
>> --- a/drivers/hid/Kconfig
>> +++ b/drivers/hid/Kconfig
>> @@ -441,6 +441,14 @@ config HID_PICOLCD_LEDS
>>       ---help---
>>         Provide access to PicoLCD's GPO pins via leds class.
>>
>> +config HID_PRIMAX
>> +     tristate "Primax non-fully HID-compliant devices" if EXPERT
>> +     depends on USB_HID
>> +     default !EXPERT
>
> I have removed thi 'EXPERT' dependency (please see changelog of commit
> 73d5e8f77e8 for rationale behind that) and applied. Thanks,
>
> --
> Jiri Kosina
> SUSE Labs
>
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