From patchwork Thu Apr 14 03:10:03 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: zengzhaoxiu@163.com X-Patchwork-Id: 8830831 Return-Path: X-Original-To: patchwork-linux-input@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 861E3C0553 for ; Thu, 14 Apr 2016 03:10:24 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id AC0F920295 for ; Thu, 14 Apr 2016 03:10:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B72AD201F2 for ; Thu, 14 Apr 2016 03:10:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753105AbcDNDKN (ORCPT ); Wed, 13 Apr 2016 23:10:13 -0400 Received: from m50-133.163.com ([123.125.50.133]:50594 "EHLO m50-133.163.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752980AbcDNDKM (ORCPT ); Wed, 13 Apr 2016 23:10:12 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Subject:Date:Message-Id; bh=IYt7GP/SmEXHwphV9P +3/zEBl4HnbEw61VpOMA0PNlM=; b=KFo5wBzHVTEvShKSqmpLtAsy14hbZziNdB Yj6zRrvCur52Hc2kcFuFsqd4uKXmcK+6WF+dvwrpBfYc380e+0ilp2e4nnC9O2VD Q9qiHLmiShNfFIJmTwRVlM5aXVHPIPaGRlfRF1bnWai0m54O0PQgoleX4MqhcNAq yhsz0ZQSA= Received: from zhaoxiuzeng-VirtualBox.spreadtrum.com (unknown [112.95.225.98]) by smtp3 (Coremail) with SMTP id DdGowAC3RpMOCg9Xw9mhAw--.32594S2; Thu, 14 Apr 2016 11:10:10 +0800 (CST) From: zengzhaoxiu@163.com To: linux-kernel@vger.kernel.org Cc: Zhaoxiu Zeng , Dmitry Torokhov , linux-input@vger.kernel.org Subject: [PATCH V3 15/29] input: use parity32 in grip_mp Date: Thu, 14 Apr 2016 11:10:03 +0800 Message-Id: <1460603405-5220-1-git-send-email-zengzhaoxiu@163.com> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1460601525-3822-1-git-send-email-zengzhaoxiu@163.com> References: <1460601525-3822-1-git-send-email-zengzhaoxiu@163.com> X-CM-TRANSID: DdGowAC3RpMOCg9Xw9mhAw--.32594S2 X-Coremail-Antispam: 1Uf129KBjvdXoWrtr4fZr18urWxZFy5WF43Awb_yoWkWrc_Ca y5Z3WkWF4qqr1qkrs8Jay7Z34qya97u3929Fs7ta13J3WUWrs7G34kGrZ0yw4Fqrs5ZFW7 WwsxWryxAw4I9jkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7IU50g4DUUUUU== X-Originating-IP: [112.95.225.98] X-CM-SenderInfo: p2hqw6xkdr5xrx6rljoofrz/xtbBDRJLgFaDmYPV-gAAsw Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Spam-Status: No, score=-7.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, FREEMAIL_FROM,RCVD_IN_DNSWL_HI,RP_MATCHES_RCVD,T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=ham 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 From: Zhaoxiu Zeng Signed-off-by: Zhaoxiu Zeng --- drivers/input/joystick/grip_mp.c | 16 +--------------- 1 file changed, 1 insertion(+), 15 deletions(-) diff --git a/drivers/input/joystick/grip_mp.c b/drivers/input/joystick/grip_mp.c index 573191d..3e29eb1 100644 --- a/drivers/input/joystick/grip_mp.c +++ b/drivers/input/joystick/grip_mp.c @@ -112,20 +112,6 @@ static const int axis_map[] = { 5, 9, 1, 5, 6, 10, 2, 6, 4, 8, 0, 4, 5, 9, 1, 5 static int register_slot(int i, struct grip_mp *grip); /* - * Returns whether an odd or even number of bits are on in pkt. - */ - -static int bit_parity(u32 pkt) -{ - int x = pkt ^ (pkt >> 16); - x ^= x >> 8; - x ^= x >> 4; - x ^= x >> 2; - x ^= x >> 1; - return x & 1; -} - -/* * Poll gameport; return true if all bits set in 'onbits' are on and * all bits set in 'offbits' are off. */ @@ -235,7 +221,7 @@ static int mp_io(struct gameport* gameport, int sendflags, int sendcode, u32 *pa pkt = (pkt >> 2) | 0xf0000000; } - if (bit_parity(pkt) == 1) + if (parity32(pkt)) return IO_RESET; /* Acknowledge packet receipt */