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=-11.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 8545CC4363C for ; Mon, 21 Sep 2020 20:57:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 31B4423A5D for ; Mon, 21 Sep 2020 20:57:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="BTsU8bJ1" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727939AbgIUU5M (ORCPT ); Mon, 21 Sep 2020 16:57:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44944 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726796AbgIUU5M (ORCPT ); Mon, 21 Sep 2020 16:57:12 -0400 Received: from mail-wr1-x442.google.com (mail-wr1-x442.google.com [IPv6:2a00:1450:4864:20::442]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AD8A6C0613CF for ; Mon, 21 Sep 2020 13:57:11 -0700 (PDT) Received: by mail-wr1-x442.google.com with SMTP id e16so14369026wrm.2 for ; Mon, 21 Sep 2020 13:57:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=qb9ZA0oGp7qODBPaxqF0s4GbGZxhhiJWClgQvdHfGQg=; b=BTsU8bJ1XPZPod2Nq1gfI+2lWq8N0w4NG6bHT+53m2tFB9n6q9BowuASgLxvMJip4x Wsj+A8sb73NsyxMcdlJyYByAJhyatpW7xNQUnKrTcQlC4ESSzGtOxuHOnujxTBOjuWfB aWmq7KH6cMEw/HoxiPbaV8I0y7+AibO7Zb20A= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=qb9ZA0oGp7qODBPaxqF0s4GbGZxhhiJWClgQvdHfGQg=; b=Ra0cvFqvFyyv3kiXyn8BWnFOy/2Mo1980NMMfZzXXdEzQm+TH3rEuP4+4XWvejt0CT rGP3TAsjZIITQg+v0bvABtawBdbecVliJq0m1M8qo9T0CrpKYemL9OWmCAiNSudttcax xXoa8YhsEzG+7Lz7n+JlRSuYTVdWOpdtNUap0VfbT85HA+pmLLFC7RkFiql+ZT1S21aV TRD+uUD1iqNjwkQJi7tY5lCzTqJnTQ0xO2Ml8NDOPdRWYMeAT03BLJzQJLJ5slunhqLF WFfesF9JVtstQnWLGfj8A4kcpxxeQmPi8wJ4BEIdgnQKGZHfSec0RLBdcWI/TkNjlJpM PDng== X-Gm-Message-State: AOAM530z8rINBZO4WE83ZD/pDDwjQju0O8y/Eyt+3sflxnyblPuexUb+ 0Z0CvKpk+n/1qdCKahGZkyA/Ej8AsoIIxW5jr+dhYA== X-Google-Smtp-Source: ABdhPJyceShB4dHPj5kiObX0zNr7QXBsoAU/8HPZc4U+u2OCxbHyQLmtGH11lmmn01jJCFxpyo8e7lkEf90TNj61cz4= X-Received: by 2002:a5d:40cd:: with SMTP id b13mr1618302wrq.297.1600721830024; Mon, 21 Sep 2020 13:57:10 -0700 (PDT) MIME-Version: 1.0 References: <20200921204550.29296-1-a.dewar@sussex.ac.uk> In-Reply-To: <20200921204550.29296-1-a.dewar@sussex.ac.uk> From: Jim Quinlan Date: Mon, 21 Sep 2020 16:56:58 -0400 Message-ID: Subject: Re: [PATCH] PCI: brcmstb: Add missing if statement To: Alex Dewar Cc: Alex Dewar , Nicolas Saenz Julienne , Lorenzo Pieralisi , Rob Herring , Bjorn Helgaas , Florian Fainelli , "maintainer:BROADCOM BCM7XXX ARM ARCHITECTURE" , Jim Quinlan , "moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE" , "moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE" , "open list:PCI NATIVE HOST BRIDGE AND ENDPOINT DRIVERS" , open list Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="00000000000016819505afd918ac" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --00000000000016819505afd918ac Content-Type: text/plain; charset="UTF-8" On Mon, Sep 21, 2020 at 4:45 PM Alex Dewar wrote: > > brcm_pcie_resume() contains a return statement that was presumably > intended to have an "if (ret)" in front of it, otherwise the function > returns prematurely. Fix this. > > I don't know if this code was tested or not, but I assume that this bug > means that this driver will not resume properly. > > Fixes: ad3d29c77e1e ("PCI: brcmstb: Add control of rescal reset") > Addresses-Coverity: CID 1497099: Control flow issues (UNREACHABLE) > Signed-off-by: Alex Dewar > --- > drivers/pci/controller/pcie-brcmstb.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c > index 7a3ff4632e7c..cb0c11b7308e 100644 > --- a/drivers/pci/controller/pcie-brcmstb.c > +++ b/drivers/pci/controller/pcie-brcmstb.c > @@ -1154,6 +1154,7 @@ static int brcm_pcie_resume(struct device *dev) > clk_prepare_enable(pcie->clk); > > ret = brcm_phy_start(pcie); > + if (ret) Hello, Florian suggested adding braces to the if clause and inserting a "clk_disable_unprepare(-cie->clk);" before the return. I am fine with either what you have or implementing Florian's additional suggestion. Thank you, Jim Quinlan Broadcom STB > return ret; > > /* Take bridge out of reset so we can access the SERDES reg */ > -- > 2.28.0 > --00000000000016819505afd918ac Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIQQwYJKoZIhvcNAQcCoIIQNDCCEDACAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg gg2YMIIE6DCCA9CgAwIBAgIOSBtqCRO9gCTKXSLwFPMwDQYJKoZIhvcNAQELBQAwTDEgMB4GA1UE CxMXR2xvYmFsU2lnbiBSb290IENBIC0gUjMxEzARBgNVBAoTCkdsb2JhbFNpZ24xEzARBgNVBAMT Ckdsb2JhbFNpZ24wHhcNMTYwNjE1MDAwMDAwWhcNMjQwNjE1MDAwMDAwWjBdMQswCQYDVQQGEwJC RTEZMBcGA1UEChMQR2xvYmFsU2lnbiBudi1zYTEzMDEGA1UEAxMqR2xvYmFsU2lnbiBQZXJzb25h bFNpZ24gMiBDQSAtIFNIQTI1NiAtIEczMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA tpZok2X9LAHsYqMNVL+Ly6RDkaKar7GD8rVtb9nw6tzPFnvXGeOEA4X5xh9wjx9sScVpGR5wkTg1 fgJIXTlrGESmaqXIdPRd9YQ+Yx9xRIIIPu3Jp/bpbiZBKYDJSbr/2Xago7sb9nnfSyjTSnucUcIP 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