From patchwork Thu Apr 1 21:36:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Jonker X-Patchwork-Id: 414089 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,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 1D9CCC433ED for ; Thu, 1 Apr 2021 21:37:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E8C9161103 for ; Thu, 1 Apr 2021 21:37:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234991AbhDAVhE (ORCPT ); Thu, 1 Apr 2021 17:37:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53230 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234796AbhDAVhD (ORCPT ); Thu, 1 Apr 2021 17:37:03 -0400 Received: from mail-ed1-x52a.google.com (mail-ed1-x52a.google.com [IPv6:2a00:1450:4864:20::52a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AA2B3C0613E6; Thu, 1 Apr 2021 14:37:01 -0700 (PDT) Received: by mail-ed1-x52a.google.com with SMTP id z1so3522145edb.8; Thu, 01 Apr 2021 14:37:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=e74JBjvASSCexB4+iSEuob3u0eDtHVLnT5ys0O6XPH8=; b=mpX/u4NEa6VMl+4sxiJrjdQPOoVilbJvMl23ZXbkewEFQ8lfgtH50OETUYW47QOLtg locw/fZ6o0orfi0exx+yUZtZB7Jq2QOcNsEg5QBwxkFTKqwWuVJ5mJUDpwJGHAAvg8le 5tgcYyAf2k3b2j9WFNMi6h1EE0b/kMySmTSOlYuJjX6nq3HrdmbAI5r+XdfFjSnf8WFy mgzz+8mxrwB34r0U3o5LQ7lWjE+9vLF1E9e+w9yVnjLTfWPt5aqpw9Lj6jg2P/17j1v2 MIqEphx3ik+ITXhIJi6r5Mtl2tpQO4ObRkAB6JjH3MnWjriMHIaA/GuSf/QcG48oIerU JHdQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=e74JBjvASSCexB4+iSEuob3u0eDtHVLnT5ys0O6XPH8=; b=Mv20p8Mwkd/N0UA2lL/u+Xsqnk9HFyJZwW9QQfGdcREqZ+Z0N4HqCsYvqjhOXEfEos Yg/6WHG434o3dVcHXmkZQY+DifVpqqjLP++mDt1QeKYXguv0dFWP/G1xvVNAMTLqhrVM q9VJ73hhT28XACcL1fMg9uTne+SUHPo9tZ53LmR4fS7Jrql+wqxNwleE3YUG3ZO6RYjO eiSMyUrgc3/GknK6VtvnoBdXDW7hQ99OXkQEyxNp7ynIhHqU9V+1uVOAtEMONQtqECCT fNt4HRbxAMOVP16herwg4h0tnYfTMs/Yz8X4/ltRb1WgMEGYcPemwTzTJ6O0MU+W0N6t i9MQ== X-Gm-Message-State: AOAM531CWGiGtSLn1z+d+4dTMh0EJBnemyPKGMBkUQcC4R4sOPcotpyV ZMftZp0VHv/d1KG+VSgU+ywR/XVBa9aZyQ== X-Google-Smtp-Source: ABdhPJwsCEvVUp7ijj2SJndO5yoENJgYJgXc63ygfjWn90TVlEa7ceZNB8VVE398SrF0IfD6AkIKqA== X-Received: by 2002:a05:6402:19a:: with SMTP id r26mr11991074edv.44.1617313020404; Thu, 01 Apr 2021 14:37:00 -0700 (PDT) Received: from debian.home (81-204-249-205.fixed.kpn.net. [81.204.249.205]) by smtp.gmail.com with ESMTPSA id f9sm4237006edq.43.2021.04.01.14.36.59 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 01 Apr 2021 14:37:00 -0700 (PDT) From: Johan Jonker To: heiko@sntech.de Cc: robh+dt@kernel.org, gregkh@linuxfoundation.org, balbi@kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org Subject: [PATCH v6 1/4] usb: dwc3: of-simple: bail probe if no dwc3 child node Date: Thu, 1 Apr 2021 23:36:49 +0200 Message-Id: <20210401213652.14676-2-jbx6244@gmail.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20210401213652.14676-1-jbx6244@gmail.com> References: <20210401213652.14676-1-jbx6244@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org For some of the dwc3-of-simple compatible SoCs we don't want to bind this driver to a dwc3 node, but bind that node to the 'snps,dwc3' driver instead. The kernel has no logic to decide which driver to bind to if there are 2 matching drivers, so bail probe if no dwc3 child node. Signed-off-by: Johan Jonker --- drivers/usb/dwc3/dwc3-of-simple.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/dwc3/dwc3-of-simple.c b/drivers/usb/dwc3/dwc3-of-simple.c index 71fd620c5..8d3baa5df 100644 --- a/drivers/usb/dwc3/dwc3-of-simple.c +++ b/drivers/usb/dwc3/dwc3-of-simple.c @@ -38,6 +38,10 @@ static int dwc3_of_simple_probe(struct platform_device *pdev) int ret; + /* Bail probe if no dwc3 child node. */ + if (!of_get_compatible_child(dev->of_node, "snps,dwc3")) + return -ENODEV; + simple = devm_kzalloc(dev, sizeof(*simple), GFP_KERNEL); if (!simple) return -ENOMEM;