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=-10.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 A70F3C433DF for ; Wed, 24 Jun 2020 07:00:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 88402206E2 for ; Wed, 24 Jun 2020 07:00:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389506AbgFXHAw (ORCPT ); Wed, 24 Jun 2020 03:00:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37912 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728948AbgFXHAv (ORCPT ); Wed, 24 Jun 2020 03:00:51 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 595B4C061573 for ; Wed, 24 Jun 2020 00:00:51 -0700 (PDT) Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jnzOr-0006Wj-8u; Wed, 24 Jun 2020 09:00:49 +0200 Received: from sha by dude.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1jnzOq-0002xb-IF; Wed, 24 Jun 2020 09:00:48 +0200 From: Sascha Hauer To: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Thomas Petazzoni , kernel@pengutronix.de, Russell King , Sascha Hauer Subject: [PATCH 2/2] net: ethernet: mvneta: Add back interface mode validation Date: Wed, 24 Jun 2020 09:00:45 +0200 Message-Id: <20200624070045.8878-2-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200624070045.8878-1-s.hauer@pengutronix.de> References: <20200624070045.8878-1-s.hauer@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When writing the serdes configuration register was moved to mvneta_config_interface() the whole code block was removed from mvneta_port_power_up() in the assumption that its only purpose was to write the serdes configuration register. As mentioned by Russell King its purpose was also to check for valid interface modes early so that later in the driver we do not have to care for unexpected interface modes. Add back the test to let the driver bail out early on unhandled interface modes. Signed-off-by: Sascha Hauer --- drivers/net/ethernet/marvell/mvneta.c | 22 +++++++++++++++++++--- 1 file changed, 19 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c index c4552f868157c..c639e3a293024 100644 --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -5009,10 +5009,18 @@ static void mvneta_conf_mbus_windows(struct mvneta_port *pp, } /* Power up the port */ -static void mvneta_port_power_up(struct mvneta_port *pp, int phy_mode) +static int mvneta_port_power_up(struct mvneta_port *pp, int phy_mode) { /* MAC Cause register should be cleared */ mvreg_write(pp, MVNETA_UNIT_INTR_CAUSE, 0); + + if (phy_mode != PHY_INTERFACE_MODE_QSGMII && + phy_mode != PHY_INTERFACE_MODE_SGMII && + !phy_interface_mode_is_8023z(phy_mode) && + !phy_interface_mode_is_rgmii(phy_mode)) + return -EINVAL; + + return 0; } /* Device initialization routine */ @@ -5198,7 +5206,11 @@ static int mvneta_probe(struct platform_device *pdev) if (err < 0) goto err_netdev; - mvneta_port_power_up(pp, phy_mode); + err = mvneta_port_power_up(pp, pp->phy_interface); + if (err < 0) { + dev_err(&pdev->dev, "can't power up port\n"); + return err; + } /* Armada3700 network controller does not support per-cpu * operation, so only single NAPI should be initialized. @@ -5352,7 +5364,11 @@ static int mvneta_resume(struct device *device) } } mvneta_defaults_set(pp); - mvneta_port_power_up(pp, pp->phy_interface); + err = mvneta_port_power_up(pp, pp->phy_interface); + if (err < 0) { + dev_err(device, "can't power up port\n"); + return err; + } netif_device_attach(dev); -- 2.27.0