From patchwork Thu Feb 4 11:31:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Efstathiades X-Patchwork-Id: 12067205 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 X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 0A4E9C433E0 for ; Thu, 4 Feb 2021 11:56:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9F3CF64E3E for ; Thu, 4 Feb 2021 11:56:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235701AbhBDLzu (ORCPT ); Thu, 4 Feb 2021 06:55:50 -0500 Received: from ares.krystal.co.uk ([77.72.0.130]:54316 "EHLO ares.krystal.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235652AbhBDLzs (ORCPT ); Thu, 4 Feb 2021 06:55:48 -0500 X-Greylist: delayed 1373 seconds by postgrey-1.27 at vger.kernel.org; Thu, 04 Feb 2021 06:55:48 EST Received: from [51.148.178.73] (port=37344 helo=pbcl-dsk8.fritz.box) by ares.krystal.co.uk with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.93) (envelope-from ) id 1l7crn-008lpZ-Ss; Thu, 04 Feb 2021 11:32:07 +0000 From: John Efstathiades Cc: UNGLinuxDriver@microchip.com, davem@davemloft.net, netdev@vger.kernel.org, john.efstathiades@pebblebay.com Subject: [PATCH net-next 4/9] lan78xx: disable MAC address filter before updating entry Date: Thu, 4 Feb 2021 11:31:16 +0000 Message-Id: <20210204113121.29786-5-john.efstathiades@pebblebay.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210204113121.29786-1-john.efstathiades@pebblebay.com> References: <20210204113121.29786-1-john.efstathiades@pebblebay.com> X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - ares.krystal.co.uk X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - pebblebay.com X-Get-Message-Sender-Via: ares.krystal.co.uk: authenticated_id: john.efstathiades@pebblebay.com X-Authenticated-Sender: ares.krystal.co.uk: john.efstathiades@pebblebay.com To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Disable the station MAC address entry in the perfect address filter table before updating the table entry with a new MAC address. Signed-off-by: John Efstathiades --- drivers/net/usb/lan78xx.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index 776d84d2b513..d2fcc3c5eff2 100644 --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -2493,9 +2493,12 @@ static int lan78xx_set_mac_addr(struct net_device *netdev, void *p) lan78xx_write_reg(dev, RX_ADDRL, addr_lo); lan78xx_write_reg(dev, RX_ADDRH, addr_hi); - /* Added to support MAC address changes */ - lan78xx_write_reg(dev, MAF_LO(0), addr_lo); - lan78xx_write_reg(dev, MAF_HI(0), addr_hi | MAF_HI_VALID_); + /* The station MAC address in the perfect address filter table + * must also be updated to ensure frames are received + */ + ret = lan78xx_write_reg(dev, MAF_HI(0), 0); + ret = lan78xx_write_reg(dev, MAF_LO(0), addr_lo); + ret = lan78xx_write_reg(dev, MAF_HI(0), addr_hi | MAF_HI_VALID_); return 0; }