From patchwork Fri Sep 16 09:13:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arun Ramadoss X-Patchwork-Id: 12978321 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 59754ECAAD8 for ; Fri, 16 Sep 2022 09:15:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231303AbiIPJPR (ORCPT ); Fri, 16 Sep 2022 05:15:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36324 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231280AbiIPJOr (ORCPT ); Fri, 16 Sep 2022 05:14:47 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8745212D36; Fri, 16 Sep 2022 02:14:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1663319685; x=1694855685; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Cb8wF47Gufv1Zl9sCCgpwO9plAkkFxVtctfAOUBp6Kc=; b=bU5u6OlOL+6vRxBaGV9W5EYIAv4/H9PeQgUEhjRR7ZGaH7EifFU3uusI S+VN+JfWzGzwiH4VfM9E4u61IrSBGqbyrZB14etjYVJutGJA9Mn0uG3vV gduz9p8+ovq4ItEy12OsRwbW+gpJyiNGSuSqXsrLCe/Rw4dBN88Ep/bnu LlljA4mAR6TInLH4Hex8vNFwnYhfidld2alQCwpr0PziDYPVwifH2l9Mk iYG/WwH2A50ZFJchcdbE0Apv5qcbEJNfUQrOKd/TH9uzbdeh0xXzXFjuu FeN8MWAlDSbTrmTyqMKtgZMt+W9PCWeRsw84q6ttjTv1OM2F8/owVq2Fu w==; X-IronPort-AV: E=Sophos;i="5.93,320,1654585200"; d="scan'208";a="177468234" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 16 Sep 2022 02:14:44 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Fri, 16 Sep 2022 02:14:44 -0700 Received: from CHE-LT-I17769U.microchip.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Fri, 16 Sep 2022 02:14:38 -0700 From: Arun Ramadoss To: , CC: , , , , , , , , , , , , , , Subject: [Patch net-next v3 3/6] net: dsa: microchip: lan937x: return zero if mdio node not present Date: Fri, 16 Sep 2022 14:43:45 +0530 Message-ID: <20220916091348.8570-4-arun.ramadoss@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220916091348.8570-1-arun.ramadoss@microchip.com> References: <20220916091348.8570-1-arun.ramadoss@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Currently, if the mdio node is not present in the dts file then lan937x_mdio_register return -ENODEV and entire probing process fails. To make the mdio_register generic for all ksz series switches and to maintain back-compatibility with existing dts file, return -ENODEV is replaced with return 0. Signed-off-by: Arun Ramadoss --- drivers/net/dsa/microchip/lan937x_main.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/net/dsa/microchip/lan937x_main.c b/drivers/net/dsa/microchip/lan937x_main.c index 1f4472c90a1f..36acef385de3 100644 --- a/drivers/net/dsa/microchip/lan937x_main.c +++ b/drivers/net/dsa/microchip/lan937x_main.c @@ -214,10 +214,8 @@ static int lan937x_mdio_register(struct ksz_device *dev) int ret; mdio_np = of_get_child_by_name(dev->dev->of_node, "mdio"); - if (!mdio_np) { - dev_err(ds->dev, "no MDIO bus node\n"); - return -ENODEV; - } + if (!mdio_np) + return 0; bus = devm_mdiobus_alloc(ds->dev); if (!bus) {