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

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Date:	Mon, 17 Oct 2011 17:11:50 +0200 (CEST)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Terry Lambert <tlambert@...omium.org>
Cc:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Driver for Primax keyboards violating USB HID spec

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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