From mboxrd@z Thu Jan 1 00:00:00 1970 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 A693FCDB482 for ; Tue, 17 Oct 2023 17:03:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233940AbjJQRDa (ORCPT ); Tue, 17 Oct 2023 13:03:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48482 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232134AbjJQRD3 (ORCPT ); Tue, 17 Oct 2023 13:03:29 -0400 Received: from mail-ej1-x631.google.com (mail-ej1-x631.google.com [IPv6:2a00:1450:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6CF02AB for ; Tue, 17 Oct 2023 10:03:27 -0700 (PDT) Received: by mail-ej1-x631.google.com with SMTP id a640c23a62f3a-9c53e8b7cf4so264431566b.1 for ; Tue, 17 Oct 2023 10:03:27 -0700 (PDT) DKIM-Signature: v=1; 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bh=Kgy0xobdqAbjZ7PDnTLH7bL6TueBeeQA6u4OOu5zZug=; b=pAszkTYx8CprQk9ZWgG5tLO6VkUMp+RB76Q5Hd/3KlOQaHtrygt239YFixITD7NkIS R9k+7bKFvMPB98OW2SRkRaddvGIpvzGnxu51/5AnEzOXAsQZGVwY1Eq075fhhF5sEhz6 8WsWhVry7nEtNRRhMkoeToJz8tZ8VemMPMn0JKCu8Ga8EIT2z14YHrbGacP8ceWuyFok Xe+5Fd8wavFr662tFrjL7zSu4uKqpXvN58b00gWHONmoh3P4e1n0dJq6ptYx2SnvPTB2 DKiUTNuRQ/JikL6j1NIPTKuJzvnVCLKCO0OTJwEJhgcpD0hUjlHI/a2ViKsYTa5Wi53R Eyyw== X-Gm-Message-State: AOJu0YyZe7Q90jYNS2aEu/8QTMmeg17zICryZEO9kNkzx/64PJ9uV2/f tB/wR6FoAwKrtW22ykMlRPUG0w== X-Google-Smtp-Source: AGHT+IGTk9EVS6aqAErr7g6dhZbskEbYeowGHCgWBXaQ/vOTHbiUHAdtYMNHfeuzg9MS/rEUt1MEyQ== X-Received: by 2002:a17:906:7949:b0:9bf:39f3:f11d with SMTP id l9-20020a170906794900b009bf39f3f11dmr1824319ejo.30.1697562205938; Tue, 17 Oct 2023 10:03:25 -0700 (PDT) Received: from [192.168.1.20] ([178.197.219.154]) by smtp.gmail.com with ESMTPSA id k8-20020a170906054800b0099315454e76sm125677eja.211.2023.10.17.10.03.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 17 Oct 2023 10:03:25 -0700 (PDT) Message-ID: <9da94b23-cfcb-4086-a080-7e6e59866d25@linaro.org> Date: Tue, 17 Oct 2023 19:03:22 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 4/4] HID: touchscreen: Add initial support for Himax HID-over-SPI Content-Language: en-US To: Tylor Yang , dmitry.torokhov@gmail.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, jikos@kernel.org, benjamin.tissoires@redhat.com, linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: poyuan_chang@himax.corp-partner.google.com, jingyliang@chromium.org, hbarnor@chromium.org, wuxy23@lenovo.com, luolm1@lenovo.com, poyu_hung@himax.corp-partner.google.com References: <20231017091900.801989-1-tylor_yang@himax.corp-partner.google.com> <20231017091900.801989-5-tylor_yang@himax.corp-partner.google.com> From: Krzysztof Kozlowski Autocrypt: addr=krzysztof.kozlowski@linaro.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org On 17/10/2023 11:19, Tylor Yang wrote: ... > + > +#if defined(CONFIG_FB) > +int fb_notifier_callback(struct notifier_block *self, > + unsigned long event, void *data) > +{ > + const struct fb_event *evdata = data; > + int *blank; > + struct himax_ts_data *ts = > + container_of(self, struct himax_ts_data, fb_notif); > + > + I("entered"); > + > + if (!ts) { > + E("ts is NULL"); > + return -ECANCELED; > + } There are so many wrong things with this.... First, tell me, how container of valid pointer can be NULL? Second, this is not Linux coding style. Best regards, Krzysztof