From patchwork Thu Sep 29 08:21:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eirin Nya X-Patchwork-Id: 610703 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E6426C6FA82 for ; Thu, 29 Sep 2022 08:21:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235208AbiI2IVZ (ORCPT ); Thu, 29 Sep 2022 04:21:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43144 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235351AbiI2IVX (ORCPT ); Thu, 29 Sep 2022 04:21:23 -0400 Received: from mail-pg1-x52a.google.com (mail-pg1-x52a.google.com [IPv6:2607:f8b0:4864:20::52a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8AF851B7A6; Thu, 29 Sep 2022 01:21:22 -0700 (PDT) Received: by mail-pg1-x52a.google.com with SMTP id 3so832906pga.1; Thu, 29 Sep 2022 01:21:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date; bh=44IyFYTlV7SPq/8WObcl0GLatKL7zrsYf18ZG5bJ/Xo=; b=U1e5Zog5o8MxtDdfumn1djJUqkyT/K8+ja9R+5CWs4OuZffNPHPAW10bf2Gpe+r7I9 Cs5zSFAwOhBMF50cbwJINIqq/4tyWQRQWei2DYl/ux8zkEff5rkyfSUhGPYcg89fdiuT 1yvKrhrzSWA6pucVVkjEK0itepe7Fam6+OyEECeighiFARbF0X+BucC6edu/ioI97q5c CfHyP5jGK/GwM1SHZF4c+UlhMyseBbfHZ6qYjDA8At31tyFS4s5AYzWIf2OdqLDiR2aq cykWbFVFEuS735ZZHwBqr++8QkRZZNC77tuIr28QHfVySRwrCXNXgbQs5wAeUAV7EPTk gzDQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date; bh=44IyFYTlV7SPq/8WObcl0GLatKL7zrsYf18ZG5bJ/Xo=; b=6gaEg8vYmFeLsEaaAoLejsNLV3wiBDPRYSHU+vjogQLfjigrj+vLV1mxqpLET4xnCM Z8+C0+5884LjP8SffT/cmBAkfV3PM4m4gYEhizeL7dAYwAqz6ocfvTW/J+KKL8BgXCv+ 8xTvu10iYc+mIpFagIWR5M6TvqrmoffWi8QrYNN+2T8HJH2O8N/QuqVGwAPBcFrmBelQ 0T79pBjXPjKMHXJj+McKU674ny1lnXjIBVkqDe5UvJqM4EAnmwZLytESqPKid4mc/iYy iG/LsAmCT6WTauwPBCBF31QNGvCEcdqopCT90s/+J5sraEnBMAFzIFAucoaYZ0wkYkK/ 0NSg== X-Gm-Message-State: ACrzQf2YNxkjwBKSvHImSZ+H5vju4Q42a+NhqW6xB/noRP83a5WMSsZo J6lw8E2evGKaX4xDK8XngEw+nx360UhiM0A5 X-Google-Smtp-Source: AMsMyM6Z+nvXjEoB2x1hbVePRpYWa+WY0h7MKwemfeADkflHGmT6AyO+wNZn8oBqZgiI2kpozNPV0A== X-Received: by 2002:a05:6a00:1503:b0:546:833c:ed05 with SMTP id q3-20020a056a00150300b00546833ced05mr2273554pfu.44.1664439681563; Thu, 29 Sep 2022 01:21:21 -0700 (PDT) Received: from dell-void.nyanpasu256.gmail.com.beta.tailscale.net (c-71-202-83-242.hsd1.ca.comcast.net. [71.202.83.242]) by smtp.gmail.com with ESMTPSA id p16-20020aa79e90000000b005360da6b26bsm5474476pfq.159.2022.09.29.01.21.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 29 Sep 2022 01:21:21 -0700 (PDT) From: Eirin Nya To: linux-input@vger.kernel.org Cc: linux-kernel@vger.kernel.org Subject: [PATCH 1/3] Input: Remove redundant field elantech_data::y_max Date: Thu, 29 Sep 2022 01:21:17 -0700 Message-Id: <20220929082119.22112-2-nyanpasu256@gmail.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20220929082119.22112-1-nyanpasu256@gmail.com> References: <20220929082119.22112-1-nyanpasu256@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org elantech_data::y_max is copied from elantech_device_info::y_max, and neither is mutated after initialization. So remove the redundant variable to prevent future bugs when updating y_max. Signed-off-by: Eirin Nya Reviewed-by: Mattijs Korpershoek --- drivers/input/mouse/elantech.c | 17 ++++++++--------- drivers/input/mouse/elantech.h | 1 - 2 files changed, 8 insertions(+), 10 deletions(-) diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index ece97f8c6a..79e31611fc 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -360,7 +360,7 @@ static void elantech_report_absolute_v1(struct psmouse *psmouse) input_report_abs(dev, ABS_X, ((packet[1] & 0x0c) << 6) | packet[2]); input_report_abs(dev, ABS_Y, - etd->y_max - (((packet[1] & 0x03) << 8) | packet[3])); + etd->info.y_max - (((packet[1] & 0x03) << 8) | packet[3])); } input_report_key(dev, BTN_TOOL_FINGER, fingers == 1); @@ -435,7 +435,7 @@ static void elantech_report_absolute_v2(struct psmouse *psmouse) * byte 4: . . . . y11 y10 y9 y8 * byte 5: y7 y6 y5 y4 y3 y2 y1 y0 */ - y1 = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]); + y1 = etd->info.y_max - (((packet[4] & 0x0f) << 8) | packet[5]); pres = (packet[1] & 0xf0) | ((packet[4] & 0xf0) >> 4); width = ((packet[0] & 0x30) >> 2) | ((packet[3] & 0x30) >> 4); @@ -450,7 +450,7 @@ static void elantech_report_absolute_v2(struct psmouse *psmouse) */ x1 = (((packet[0] & 0x10) << 4) | packet[1]) << 2; /* byte 2: ay7 ay6 ay5 ay4 ay3 ay2 ay1 ay0 */ - y1 = etd->y_max - + y1 = etd->info.y_max - ((((packet[0] & 0x20) << 3) | packet[2]) << 2); /* * byte 3: . . by8 bx8 . . . . @@ -458,7 +458,7 @@ static void elantech_report_absolute_v2(struct psmouse *psmouse) */ x2 = (((packet[3] & 0x10) << 4) | packet[4]) << 2; /* byte 5: by7 by8 by5 by4 by3 by2 by1 by0 */ - y2 = etd->y_max - + y2 = etd->info.y_max - ((((packet[3] & 0x20) << 3) | packet[5]) << 2); /* Unknown so just report sensible values */ @@ -579,7 +579,7 @@ static void elantech_report_absolute_v3(struct psmouse *psmouse, * byte 4: . . . . y11 y10 y9 y8 * byte 5: y7 y6 y5 y4 y3 y2 y1 y0 */ - y1 = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]); + y1 = etd->info.y_max - (((packet[4] & 0x0f) << 8) | packet[5]); break; case 2: @@ -593,7 +593,7 @@ static void elantech_report_absolute_v3(struct psmouse *psmouse, * byte 4: . . . . ay11 ay10 ay9 ay8 * byte 5: ay7 ay6 ay5 ay4 ay3 ay2 ay1 ay0 */ - etd->mt[0].y = etd->y_max - + etd->mt[0].y = etd->info.y_max - (((packet[4] & 0x0f) << 8) | packet[5]); /* * wait for next packet @@ -605,7 +605,7 @@ static void elantech_report_absolute_v3(struct psmouse *psmouse, x1 = etd->mt[0].x; y1 = etd->mt[0].y; x2 = ((packet[1] & 0x0f) << 8) | packet[2]; - y2 = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]); + y2 = etd->info.y_max - (((packet[4] & 0x0f) << 8) | packet[5]); break; } @@ -681,7 +681,7 @@ static void process_packet_head_v4(struct psmouse *psmouse) return; etd->mt[id].x = ((packet[1] & 0x0f) << 8) | packet[2]; - etd->mt[id].y = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]); + etd->mt[id].y = etd->info.y_max - (((packet[4] & 0x0f) << 8) | packet[5]); pres = (packet[1] & 0xf0) | ((packet[4] & 0xf0) >> 4); traces = (packet[0] & 0xf0) >> 4; @@ -1253,7 +1253,6 @@ static int elantech_set_input_params(struct psmouse *psmouse) input_abs_set_res(dev, ABS_MT_POSITION_Y, info->y_res); } - etd->y_max = y_max; etd->width = width; return 0; diff --git a/drivers/input/mouse/elantech.h b/drivers/input/mouse/elantech.h index 571e6ca11d..1ec004f72d 100644 --- a/drivers/input/mouse/elantech.h +++ b/drivers/input/mouse/elantech.h @@ -180,7 +180,6 @@ struct elantech_data { unsigned char reg_25; unsigned char reg_26; unsigned int single_finger_reports; - unsigned int y_max; unsigned int width; struct finger_pos mt[ETP_MAX_FINGERS]; unsigned char parity[256];