From patchwork Wed Jul 9 15:24:10 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 4517471 Return-Path: X-Original-To: patchwork-linux-input@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id E42989F4F5 for ; Wed, 9 Jul 2014 15:24:48 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3A93C20383 for ; Wed, 9 Jul 2014 15:24:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5A1BF2037F for ; Wed, 9 Jul 2014 15:24:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932557AbaGIPYg (ORCPT ); Wed, 9 Jul 2014 11:24:36 -0400 Received: from mx1.redhat.com ([209.132.183.28]:23424 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932555AbaGIPYe (ORCPT ); Wed, 9 Jul 2014 11:24:34 -0400 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id s69FOSJm008704 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 9 Jul 2014 11:24:28 -0400 Received: from shalem.localdomain.com (vpn1-6-44.ams2.redhat.com [10.36.6.44]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id s69FOJwE015745; Wed, 9 Jul 2014 11:24:27 -0400 From: Hans de Goede To: Dmitry Torokhov Cc: Yunkang Tang , linux-input@vger.kernel.org, Hans de Goede Subject: [PATCH 05/14] alps: process_bitmap: Fix counting of high point bits Date: Wed, 9 Jul 2014 17:24:10 +0200 Message-Id: <1404919459-23561-6-git-send-email-hdegoede@redhat.com> In-Reply-To: <1404919459-23561-1-git-send-email-hdegoede@redhat.com> References: <1404919459-23561-1-git-send-email-hdegoede@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.27 Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Spam-Status: No, score=-7.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP alps_process_bitmap was resetting the point bit-count as soon as it saw 2 0 bits in a row. This means that unless the high point actually is at the end of the bitmap, it would always get its num_bits set to 0. Instead reset num_bits to 0 on a 0-1 transition, so that with > 2 fingers we only count the number of bits occupied by the highest finger. Signed-off-by: Hans de Goede --- drivers/input/mouse/alps.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c index 00c735d..ebf8187 100644 --- a/drivers/input/mouse/alps.c +++ b/drivers/input/mouse/alps.c @@ -342,14 +342,13 @@ static void alps_get_bitmap_points(unsigned int map, if (bit) { if (!prev_bit) { point->start_bit = i; + point->num_bits = 0; (*fingers)++; } point->num_bits++; } else { if (prev_bit) point = high; - else - point->num_bits = 0; } prev_bit = bit; }