From patchwork Wed Sep 14 03:52:21 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arun Ramadoss X-Patchwork-Id: 12975577 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 0C536ECAAD3 for ; Wed, 14 Sep 2022 03:54:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229872AbiINDyw (ORCPT ); Tue, 13 Sep 2022 23:54:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40690 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229871AbiINDyo (ORCPT ); Tue, 13 Sep 2022 23:54:44 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F2890644B; Tue, 13 Sep 2022 20:54:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1663127681; x=1694663681; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Cb8wF47Gufv1Zl9sCCgpwO9plAkkFxVtctfAOUBp6Kc=; b=xALxp+NGTysB6Rn7nKq/Zu4rvhJNoHAu6bRvq8fT6ykpdMhC7ZBBKnm/ qvrIKzpu5XBJi4cgGMxFHrpfk6rRvl0r/qoFy4MfPEb70On73PWSaXZlx iDHBcPt0fCbXSqeAsZ9QKbDWGtg//t4UJWy9cvCrMUk0AOP9KHb7buVaW O9fNZBsnm9g5xFX3HVPNboJTdlPFx/1Tew8Aitr2p7OEGFDVvCqE5s4PG krqdYwMlQIp1c2celnfBsf7PHi3y1D5LC6UiJHtEs9zMLaVf34mhNynYX NZ4kRfwQSkSEX9ZTFr2gD49esZX7UVuauePHF7lQZwXEf7A724owUk94h A==; X-IronPort-AV: E=Sophos;i="5.93,313,1654585200"; d="scan'208";a="180297820" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa5.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 13 Sep 2022 20:54:37 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.87.72) by chn-vm-ex02.mchp-main.com (10.10.87.72) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Tue, 13 Sep 2022 20:54:36 -0700 Received: from CHE-LT-I17769U.microchip.com (10.10.115.15) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Tue, 13 Sep 2022 20:54:30 -0700 From: Arun Ramadoss To: , CC: , , , , , , , , , , , , , , Subject: [Patch net-next v2 3/5] net: dsa: microchip: lan937x: return zero if mdio node not present Date: Wed, 14 Sep 2022 09:22:21 +0530 Message-ID: <20220914035223.31702-4-arun.ramadoss@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220914035223.31702-1-arun.ramadoss@microchip.com> References: <20220914035223.31702-1-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) {