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=-9.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,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 83F15C43381 for ; Sat, 23 Feb 2019 21:14:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 45CEA20651 for ; Sat, 23 Feb 2019 21:14:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550956475; bh=2vMs9jnEZ8hWPfmONL7svB1hYRQ+DExvimcyxTug0iY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Pnfs874C6uNyFKVGOg/as6rfstJk8PaIEFyS92GFz4/3pD5IW7OsPq7AD4z+pDO5L wEQSJzKXXY7BWC/EgAMaryTSI5f4b/f+spZo/QB22Ynmc9GIg4Xi4gRPYNX0XfK9Hm E4aejKNNOaiP9GK/MmjFCEMsGCldjnHTAB0sS7G0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730098AbfBWVOe (ORCPT ); Sat, 23 Feb 2019 16:14:34 -0500 Received: from mail.kernel.org ([198.145.29.99]:47548 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729915AbfBWVLL (ORCPT ); Sat, 23 Feb 2019 16:11:11 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 00BB220861; Sat, 23 Feb 2019 21:11:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550956270; bh=2vMs9jnEZ8hWPfmONL7svB1hYRQ+DExvimcyxTug0iY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UA+I+tfHRcWAkMSz6TTn6Ls0ii8DWUdOB7hHgtwxb+s+EHayIEYdMYkO6j/W66Mk0 ClokZd7zo0NEDKkCaKFXU71XIF9KtBG/QQNu8Mb+7keUBjJooFw4J6qLb4DGJzbGhG WFy0/fpA7rienybeuhrOjITN3BcCS5Obcs/SSKmQ= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Yonglong Liu , Peng Li , "David S . Miller" , Sasha Levin , netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.4 13/26] net: hns: Fix wrong read accesses via Clause 45 MDIO protocol Date: Sat, 23 Feb 2019 16:10:34 -0500 Message-Id: <20190223211047.202725-13-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190223211047.202725-1-sashal@kernel.org> References: <20190223211047.202725-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Yonglong Liu [ Upstream commit cec8abba13e6a26729dfed41019720068eeeff2b ] When reading phy registers via Clause 45 MDIO protocol, after write address operation, the driver use another write address operation, so can not read the right value of any phy registers. This patch fixes it. Signed-off-by: Yonglong Liu Signed-off-by: Peng Li Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/hisilicon/hns_mdio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/hisilicon/hns_mdio.c b/drivers/net/ethernet/hisilicon/hns_mdio.c index 37491c85bc422..6ff13c559e527 100644 --- a/drivers/net/ethernet/hisilicon/hns_mdio.c +++ b/drivers/net/ethernet/hisilicon/hns_mdio.c @@ -319,7 +319,7 @@ static int hns_mdio_read(struct mii_bus *bus, int phy_id, int regnum) } hns_mdio_cmd_write(mdio_dev, is_c45, - MDIO_C45_WRITE_ADDR, phy_id, devad); + MDIO_C45_READ, phy_id, devad); } /* Step 5: waitting for MDIO_COMMAND_REG 's mdio_start==0,*/ -- 2.19.1