Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263598AbTKKVz4 (ORCPT ); Tue, 11 Nov 2003 16:55:56 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263639AbTKKVzz (ORCPT ); Tue, 11 Nov 2003 16:55:55 -0500 Received: from twilight.ucw.cz ([81.30.235.3]:42628 "EHLO twilight.ucw.cz") by vger.kernel.org with ESMTP id S263598AbTKKVzy (ORCPT ); Tue, 11 Nov 2003 16:55:54 -0500 Date: Tue, 11 Nov 2003 22:55:26 +0100 From: Vojtech Pavlik To: Peter Osterlund Cc: linux-kernel@vger.kernel.org, Vojtech Pavlik , Dmitry Torokhov , Peter Berg Larsen Subject: Re: [PATCH] Fix synaptics driver for PowerPro C 3:16 Message-ID: <20031111215526.GA31707@ucw.cz> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2027 Lines: 56 On Tue, Nov 11, 2003 at 09:32:18PM +0100, Peter Osterlund wrote: > Hi! > > A user reported that the synaptics touchpad driver didn't work on his > PowerPro C 3:16 laptop. Some debugging revealed that the patch below > is necessary to make the driver compatible with his touchpad. > > For some reason bit 3 in byte 1 and 4 in the synaptics packets are set > to 1, which fails because the driver follows the documentation which > says that the bit is 0. > > Hardware properties: (reported by synclient -h) > Model Id = 009d48b1 > Capabilities = 00904713 > Identity = 00084715 > > With this patch, the touchpad works as expected. As far as I can see, > this patch can not break anything for other touchpads, so it should be > safe. Does anyone see a problem with this patch? I think this could help some Dell laptops as well (also always reporting lost sync). Good. > --- linux/drivers/input/mouse/synaptics.c.old 2003-11-11 20:41:15.000000000 +0100 > +++ linux/drivers/input/mouse/synaptics.c 2003-11-11 20:41:29.000000000 +0100 > @@ -581,7 +581,7 @@ > > switch (psmouse->pktcnt) { > case 1: > - if (newabs ? ((data & 0xC8) != 0x80) : ((data & 0xC0) != 0xC0)) { > + if (newabs ? ((data & 0xC0) != 0x80) : ((data & 0xC0) != 0xC0)) { > printk(KERN_WARNING "Synaptics driver lost sync at 1st byte\n"); > goto bad_sync; > } > @@ -593,7 +593,7 @@ > } > break; > case 4: > - if (newabs ? ((data & 0xC8) != 0xC0) : ((data & 0xC0) != 0x80)) { > + if (newabs ? ((data & 0xC0) != 0xC0) : ((data & 0xC0) != 0x80)) { > printk(KERN_WARNING "Synaptics driver lost sync at 4th byte\n"); > goto bad_sync; > } > > -- > Peter Osterlund - petero2@telia.com > http://w1.894.telia.com/~u89404340 -- Vojtech Pavlik SuSE Labs, SuSE CR - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/