From patchwork Mon Oct 26 17:41:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 11857939 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 161B592C for ; Mon, 26 Oct 2020 17:41:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F034322242 for ; Mon, 26 Oct 2020 17:41:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1788116AbgJZRla (ORCPT ); Mon, 26 Oct 2020 13:41:30 -0400 Received: from mga06.intel.com ([134.134.136.31]:13616 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1788121AbgJZRla (ORCPT ); Mon, 26 Oct 2020 13:41:30 -0400 IronPort-SDR: D1mPUGe8DQVETxHgPwKsCSQ2IA3hqvPcLKv8AEC9m024+pGwouzRosBXtqToKBl21LMLY/mSeB re7i5/wrvsRg== X-IronPort-AV: E=McAfee;i="6000,8403,9786"; a="229595781" X-IronPort-AV: E=Sophos;i="5.77,420,1596524400"; d="scan'208";a="229595781" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Oct 2020 10:41:29 -0700 IronPort-SDR: CbSfWwai0fuKIrXOOyqrHNIjPzZVRMMi48Og+QfDixNRENecZdbcQXozI3rhwVNRSTvy5VxP3X j+YdqM1ZeYWQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,420,1596524400"; d="scan'208";a="350200903" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga004.fm.intel.com with ESMTP; 26 Oct 2020 10:41:28 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 68DE913C; Mon, 26 Oct 2020 19:41:27 +0200 (EET) From: Andy Shevchenko To: Dmitry Torokhov , linux-input@vger.kernel.org Cc: Andy Shevchenko Subject: [PATCH v2] Input: edt-ft5x06 - use U16_MAX instead of -1 Date: Mon, 26 Oct 2020 19:41:26 +0200 Message-Id: <20201026174126.19449-1-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Explicitly show what the value we supply for the touchscreen resolution when it can't be detected. -1 is hard to compare with when unsigned short type is in use. The change will help to avoid signed vs. unsigned error prone comparisons. Signed-off-by: Andy Shevchenko --- v2: rebased on top of v5.10-rc1 drivers/input/touchscreen/edt-ft5x06.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c index 6ff81d48da86..34e9cb9c0691 100644 --- a/drivers/input/touchscreen/edt-ft5x06.c +++ b/drivers/input/touchscreen/edt-ft5x06.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -1005,8 +1006,8 @@ edt_ft5x06_ts_get_parameters(struct edt_ft5x06_ts_data *tsdata) tsdata->num_y = edt_ft5x06_register_read(tsdata, reg_addr->reg_num_y); } else { - tsdata->num_x = -1; - tsdata->num_y = -1; + tsdata->num_x = U16_MAX; + tsdata->num_y = U16_MAX; } }