linux-kernel - Re: [PATCH 5/6] HID: Add vendor specific usage pages for Logitech G920

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Date:	Mon, 9 Nov 2015 09:20:38 +0100
From:	Benjamin Tissoires <benjamin.tissoires@...il.com>
To:	Simon Wood <simon@...gewell.org>
Cc:	linux-input <linux-input@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Jiri Kosina <jkosina@...e.cz>, Edwin <Edwin@...ds.nl>,
	Michal Malý <madcatxster@...oid-pointer.net>,
	elias vanderstuyft <elias.vds@...il.com>,
	Benjamin Tissoires <benjamin.tissoires@...hat.com>
Subject: Re: [PATCH 5/6] HID: Add vendor specific usage pages for Logitech G920

On Sat, Nov 7, 2015 at 5:10 PM, Simon Wood <simon@...gewell.org> wrote:
> The Logitech G920 uses a couple of vendor specific usage pages,
> which results in incorrect number of axis/buttons being detected.
>
> This patch adds these pages to the 'ignore' list.
>
> Reported-by: Elias Vanderstuyft <elias.vds@...il.com>
> Signed-off-by: Simon Wood <simon@...gewell.org>
> ---
>  drivers/hid/hid-input.c | 2 +-
>  include/linux/hid.h     | 2 ++
>  2 files changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
> index 53aeaf6..c120be5 100644
> --- a/drivers/hid/hid-input.c
> +++ b/drivers/hid/hid-input.c
> @@ -959,7 +959,7 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
>                 set_bit(EV_REP, input->evbit);
>                 goto ignore;
>
> -       case HID_UP_LOGIVENDOR:
> +       case HID_UP_LOGIVENDOR: case HID_UP_LOGIVENDOR2: case HID_UP_LOGIVENDOR3:

One line per case, please. Also, IIRC it would be good to add /*
intentional fallback */ between each case to make sure we are not
ignoring usages that should not.

Cheers,
Benjamin

>                 goto ignore;
>
>         case HID_UP_PID:
> diff --git a/include/linux/hid.h b/include/linux/hid.h
> index f17980d..ce1d883 100644
> --- a/include/linux/hid.h
> +++ b/include/linux/hid.h
> @@ -168,6 +168,8 @@ struct hid_item {
>  #define HID_UP_MSVENDOR                0xff000000
>  #define HID_UP_CUSTOM          0x00ff0000
>  #define HID_UP_LOGIVENDOR      0xffbc0000
> +#define HID_UP_LOGIVENDOR2   0xff090000
> +#define HID_UP_LOGIVENDOR3   0xff430000
>  #define HID_UP_LNVENDOR                0xffa00000
>  #define HID_UP_SENSOR          0x00200000
>
> --
> 2.1.4
>
> --
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