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From: Pete Zaitcev <zaitcev@redhat.com>
To: Dmitry Torokhov <dtor_core@ameritech.net>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Fix ALPS sync loss
Date: Thu, 10 Feb 2005 11:07:46 -0800	[thread overview]
Message-ID: <20050210110746.1c779ffd@localhost.localdomain> (raw)
In-Reply-To: <mailman.1107906420.26313.linux-kernel2news@redhat.com>

On Tue, 8 Feb 2005 18:40:12 -0500, Dmitry Torokhov <dtor_core@ameritech.net> wrote:

> Here is the promised patch. It turns out protocol validation code was
> a bit (or rather a byte ;) ) off.

> +++ b/drivers/input/mouse/alps.c	2005-02-08 18:16:27 -05:00
> @@ -198,8 +198,8 @@
>  		return PSMOUSE_BAD_DATA;
>  
>  	/* Bytes 2 - 6 should have 0 in the highest bit */
> -	if (psmouse->pktcnt > 1 && psmouse->pktcnt <= 6 &&
> -	    (psmouse->packet[psmouse->pktcnt] & 0x80))
> +	if (psmouse->pktcnt >= 2 && psmouse->pktcnt <= 6 &&
> +	    (psmouse->packet[psmouse->pktcnt - 1] & 0x80))
>  		return PSMOUSE_BAD_DATA;

This seems to work here, no more dead pad.

-- Pete

       reply	other threads:[~2005-02-10 19:09 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <mailman.1107906420.26313.linux-kernel2news@redhat.com>
2005-02-10 19:07 ` Pete Zaitcev [this message]
2005-02-08 23:40 [PATCH] Fix ALPS sync loss Dmitry Torokhov
2005-02-09  7:23 ` Vojtech Pavlik
2005-02-09 17:35 ` Joseph Pingenot
2005-02-10 19:54   ` Dmitry Torokhov

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