linux-kernel - Re: [PATCH 1/3] input: alps: Reset mouse before identifying it

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Message-ID: <542E70CF.40205@redhat.com>
Date:	Fri, 03 Oct 2014 11:47:59 +0200
From:	Hans de Goede <hdegoede@...hat.com>
To:	Pali Rohár <pali.rohar@...il.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Yunkang Tang <yunkang.tang@...alps.com>,
	Tommy Will <tommywill2011@...il.com>
CC:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] input: alps: Reset mouse before identifying it

Hi,

Thanks for working on this!

On 10/03/2014 11:43 AM, Pali Rohár wrote:
> On some systems after starting computer function alps_identify() does not detect
> dual ALPS touchpad+trackstick device correctly and detect only touchpad.
> 
> Resetting ALPS device before identifiying it fixing this problem and both parts
> touchpad and trackstick are detected.
> 
> Signed-off-by: Pali Rohár <pali.rohar@...il.com>
> Tested-by: Pali Rohár <pali.rohar@...il.com>

Looks good and seems sensible:

Acked-by: Hans de Goede <hdegoede@...hat.com>

Regards,

Hans

> ---
>  drivers/input/mouse/alps.c |    2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
> index 35a49bf..1bd5aa1 100644
> --- a/drivers/input/mouse/alps.c
> +++ b/drivers/input/mouse/alps.c
> @@ -2403,6 +2403,8 @@ int alps_detect(struct psmouse *psmouse, bool set_properties)
>  {
>  	struct alps_data dummy;
>  
> +	psmouse_reset(psmouse);
> +
>  	if (alps_identify(psmouse, &dummy) < 0)
>  		return -1;
>  
> 
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