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 X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1ABF8C43381 for ; Wed, 10 Mar 2021 13:52:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E306164FE0 for ; Wed, 10 Mar 2021 13:52:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232745AbhCJNwB (ORCPT ); Wed, 10 Mar 2021 08:52:01 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51970 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231532AbhCJNvv (ORCPT ); Wed, 10 Mar 2021 08:51:51 -0500 Received: from mail-pf1-x42a.google.com (mail-pf1-x42a.google.com [IPv6:2607:f8b0:4864:20::42a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B2974C061761 for ; Wed, 10 Mar 2021 05:51:50 -0800 (PST) Received: by mail-pf1-x42a.google.com with SMTP id y13so8644730pfr.0 for ; Wed, 10 Mar 2021 05:51:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=X5tC2Q2Mgd4xeS1P2G/D3ZsBHgb7pQQku+/Xa9vdroE=; b=IzrtVVwpFhu3zRWczCd8AWhwxOpHEvd7iiEQYaSj8eZXbnf16kagqYDORkOdlEyLro ibCxfjOJzYGG4zi52Aap/EUEGu3bZr83SZdOX90yJiTm6v1HIFfjnItgLK6vsF3luZhC j7Q3XGTuAo5B/v3LEagZGf+D9yV8FXfGScU7lgppdIi7JpPthP9XlysOTvdHwV0IFhEF Ybuo4ciE9ez4oq3GhdJckCW50yIKAg4j0/xeddTDhf+vbFUk6xJeHf3mTY2i3fx8GC+g 0d8qEgEjHIZuRJIm49jfsLRh7tM8W4SWecpL+/WvKVLKHUJZRdOC1MfcgGQd4dO9IPRP 8trg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=X5tC2Q2Mgd4xeS1P2G/D3ZsBHgb7pQQku+/Xa9vdroE=; b=oBa7LFx7XIDNC0ZvEg3jgLSgcVcFvgDMwqabDkVUxCyJWpUGwPXCou4MKNLOXSmEYv BGiMVH33lJUnnEmxag9e3An3LH0M6uMz2NFb3M9HqpM9SA1Q2xnm/i5TVREY+4rZWRly cS/dDKtAyOATOJj347mA2dM+nko1XyEMt2b7hOErO4atU2wbcFvaOUvLsD3smuLTF85O O9YXRuXWNHvHhBKpV1iduWXLI5hu2H3rT8Ov620IjsvCBsNumQjyZD1TAoypbm5sO+Pe oq/zh0Hq2ZORXx+f8UJBkgxJIgBgtQ2fhWERirAjsZ9tWb2NDLg87mb2xZOh9F4sKbp9 HuDQ== X-Gm-Message-State: AOAM532oMy4zDjx7Tzh8ciNASH0Ssoc7oEir13YzHFyx8ZxldjQ8yaGu VtxoZWnpeIrwCfZ8Ew8xjEup X-Google-Smtp-Source: ABdhPJwrlt/66sTaD0Wszt9Lr1/5EnGE6QG2yKtSG3bVEzxmh8bWPSGFSvQU3fuV8bs9YCMm4lLczQ== X-Received: by 2002:a65:5bca:: with SMTP id o10mr3014262pgr.248.1615384310081; Wed, 10 Mar 2021 05:51:50 -0800 (PST) Received: from thinkpad ([103.66.79.59]) by smtp.gmail.com with ESMTPSA id k67sm10597262pgk.28.2021.03.10.05.51.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Mar 2021 05:51:49 -0800 (PST) Date: Wed, 10 Mar 2021 19:21:44 +0530 From: Manivannan Sadhasivam To: Bhaumik Bhatt Cc: linux-arm-msm@vger.kernel.org, hemantk@codeaurora.org, jhugo@codeaurora.org, linux-kernel@vger.kernel.org, carl.yin@quectel.com, naveen.kumar@quectel.com, loic.poulain@linaro.org Subject: Re: [PATCH v3] bus: mhi: core: Add missing checks for MMIO register entries Message-ID: <20210310135144.GM30275@thinkpad> References: <1615315490-36017-1-git-send-email-bbhatt@codeaurora.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1615315490-36017-1-git-send-email-bbhatt@codeaurora.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Mar 09, 2021 at 10:44:50AM -0800, Bhaumik Bhatt wrote: > As per documentation, fields marked as (required) in an MHI > controller structure need to be populated by the controller driver > before calling mhi_register_controller(). Ensure all required > pointers and non-zero fields are present in the controller before > proceeding with the registration. > > Signed-off-by: Bhaumik Bhatt Reviewed-by: Manivannan Sadhasivam Thanks, Mani > --- > v3: removed fw_image as not all controllers require it > v2: removed iova_start and iova_stop as they can be zero > > drivers/bus/mhi/core/init.c | 8 +++----- > 1 file changed, 3 insertions(+), 5 deletions(-) > > diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c > index 272f350..d8882b3 100644 > --- a/drivers/bus/mhi/core/init.c > +++ b/drivers/bus/mhi/core/init.c > @@ -879,12 +879,10 @@ int mhi_register_controller(struct mhi_controller *mhi_cntrl, > u32 soc_info; > int ret, i; > > - if (!mhi_cntrl) > - return -EINVAL; > - > - if (!mhi_cntrl->runtime_get || !mhi_cntrl->runtime_put || > + if (!mhi_cntrl || !mhi_cntrl->cntrl_dev || !mhi_cntrl->regs || > + !mhi_cntrl->runtime_get || !mhi_cntrl->runtime_put || > !mhi_cntrl->status_cb || !mhi_cntrl->read_reg || > - !mhi_cntrl->write_reg || !mhi_cntrl->nr_irqs) > + !mhi_cntrl->write_reg || !mhi_cntrl->nr_irqs || !mhi_cntrl->irq) > return -EINVAL; > > ret = parse_config(mhi_cntrl, config); > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > a Linux Foundation Collaborative Project >