From patchwork Tue Nov 1 06:02:18 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Liu Peibao X-Patchwork-Id: 13026662 X-Patchwork-Delegate: kuba@kernel.org 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 21CB0FA373D for ; Tue, 1 Nov 2022 06:02:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229536AbiKAGCf (ORCPT ); Tue, 1 Nov 2022 02:02:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37886 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229452AbiKAGCd (ORCPT ); Tue, 1 Nov 2022 02:02:33 -0400 Received: from loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id B88F6E50; Mon, 31 Oct 2022 23:02:30 -0700 (PDT) Received: from loongson.cn (unknown [10.20.42.77]) by gateway (Coremail) with SMTP id _____8Dx_7dztmBjt7oDAA--.11588S3; Tue, 01 Nov 2022 14:02:27 +0800 (CST) Received: from loongson-PC.loongson.cn (unknown [10.20.42.77]) by localhost.localdomain (Coremail) with SMTP id AQAAf8Cxb+JqtmBjCVwJAA--.28915S2; Tue, 01 Nov 2022 14:02:26 +0800 (CST) From: Liu Peibao To: Giuseppe Cavallaro , Alexandre Torgue , Jose Abreu , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Jiaxun Yang Cc: chenhuacai@loongson.cn, lvjianmin@loongson.cn, zhuyinbo@loongson.cn, liupeibao@loongson.cn, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] stmmac: dwmac-loongson: fix invalid mdio_node Date: Tue, 1 Nov 2022 14:02:18 +0800 Message-Id: <20221101060218.16453-1-liupeibao@loongson.cn> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-CM-TRANSID: AQAAf8Cxb+JqtmBjCVwJAA--.28915S2 X-CM-SenderInfo: xolx1vpled0qxorr0wxvrqhubq/1tbiAQARCmNfuuMNGgADsr X-Coremail-Antispam: 1Uk129KBjvJXoW7tF45JFyxKry3tr15GFW3Jrb_yoW8Ww4Upw 4fCa4akr9IgrW7Ca1DXr4DXFy5u3yUt39rGr4Iya9a9a9YyrWjqry2gFWUAF1xArZ5C3W2 vr109w1UGF1DAwUanT9S1TB71UUUUjDqnTZGkaVYY2UrUUUUj1kv1TuYvTs0mT0YCTnIWj qI5I8CrVACY4xI64kE6c02F40Ex7xfYxn0WfASr-VFAUDa7-sFnT9fnUUIcSsGvfJTRUUU bS8YFVCjjxCrM7AC8VAFwI0_Jr0_Gr1l1xkIjI8I6I8E6xAIw20EY4v20xvaj40_Wr0E3s 1l1IIY67AEw4v_JrI_Jryl8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxSw2x7M28EF7xv wVC0I7IYx2IY67AKxVWUCVW8JwA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxVWUJVW8JwA2z4 x0Y4vEx4A2jsIE14v26r4UJVWxJr1l84ACjcxK6I8E87Iv6xkF7I0E14v26r4UJVWxJr1l n4kS14v26r126r1DM2AIxVAIcxkEcVAq07x20xvEncxIr21l57IF6xkI12xvs2x26I8E6x ACxx1l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xIIjxv20xvE14v26r126r1DMcIj6I8E 87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lc7CjxV Aaw2AFwI0_JF0_Jw1l42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1l4IxY O2xFxVAFwI0_JF0_Jw1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGV WUWwC2zVAF1VAY17CE14v26r1q6r43MIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_ JFI_Gr1lIxAIcVC0I7IYx2IY6xkF7I0E14v26r1j6r4UMIIF0xvE42xK8VAvwI8IcIk0rV WUJVWUCwCI42IY6I8E87Iv67AKxVWUJVW8JwCI42IY6I8E87Iv6xkF7I0E14v26r1j6r4U YxBIdaVFxhVjvjDU0xZFpf9x07jeq2NUUUUU= Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org In current code "plat->mdio_node" is always NULL, the mdio support is lost as there is no "mdio_bus_data". The original driver could work as the "mdio" variable is never set to false, which is described in commit ("stmmac: dwmac-loongson: fix uninitialized variable ......"). And after this commit merged, the "mdio" variable is always false, causing the mdio supoort logic lost. Fixes: 30bba69d7db4 ("stmmac: pci: Add dwmac support for Loongson") Signed-off-by: Liu Peibao Reviewed-by: Andrew Lunn --- drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c index 017dbbda0c1c..79fa7870563b 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c @@ -51,7 +51,6 @@ static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id struct stmmac_resources res; struct device_node *np; int ret, i, phy_mode; - bool mdio = false; np = dev_of_node(&pdev->dev); @@ -69,12 +68,10 @@ static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id if (!plat) return -ENOMEM; + plat->mdio_node = of_get_child_by_name(np, "mdio"); if (plat->mdio_node) { - dev_err(&pdev->dev, "Found MDIO subnode\n"); - mdio = true; - } + dev_info(&pdev->dev, "Found MDIO subnode\n"); - if (mdio) { plat->mdio_bus_data = devm_kzalloc(&pdev->dev, sizeof(*plat->mdio_bus_data), GFP_KERNEL);