Message ID | 20200411115511.571968882@linuxfoundation.org |
---|---|
State | New |
Headers | show
Return-Path: <SRS0=d7Ir=53=vger.kernel.org=stable-owner@kernel.org> 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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, 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 4EEFDC2BBC7 for <stable@archiver.kernel.org>; Sat, 11 Apr 2020 12:15:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 294A520692 for <stable@archiver.kernel.org>; Sat, 11 Apr 2020 12:15:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586607335; bh=+E7nHQNtNavTflFgXsFcr/2lLc/xEjcHb705tglUxoY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=IYghFIIrZBmohopgA1ALGiCqhqEVdr8Uolnlb0Mqr2tEizBl2ZqYPQNl/2g3fIsN+ cwY2lc3UlcLklwurXeLC+/IcJMNZYa7g8rb69HAfcpJYV6CTbatOkpznLwKWPL8Fdl rvFkJ125jqpemH/RNq1AMQFvh4N57UfLtGzPo7Ko= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727641AbgDKMPd (ORCPT <rfc822;stable@archiver.kernel.org>); Sat, 11 Apr 2020 08:15:33 -0400 Received: from mail.kernel.org ([198.145.29.99]:49460 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726913AbgDKMPd (ORCPT <rfc822;stable@vger.kernel.org>); Sat, 11 Apr 2020 08:15:33 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D2E6721556; Sat, 11 Apr 2020 12:15:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586607332; bh=+E7nHQNtNavTflFgXsFcr/2lLc/xEjcHb705tglUxoY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=04t5qJfME0yLvwhhhiHK5Qqs//CWLKgnrx0JzKyINE+mth5nks9Zj6f65OvVuPZnD EdLv92+lxJbPHSAkDZWQZfVC5C1FSjrQUTjyK32Y9/3xIf7NXeDwMLx1PYN8cxm8Rd Dvz6JPl43+072AS5MXLvBPrmBZktXFILAI2Jaxeg= From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, stable@vger.kernel.org, Oleksij Rempel <o.rempel@pengutronix.de>, Andrew Lunn <andrew@lunn.ch>, Florian Fainelli <f.fainelli@gmail.com>, "David S. Miller" <davem@davemloft.net> Subject: [PATCH 4.19 31/54] net: phy: micrel: kszphy_resume(): add delay after genphy_resume() before accessing PHY registers Date: Sat, 11 Apr 2020 14:09:13 +0200 Message-Id: <20200411115511.571968882@linuxfoundation.org> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200411115508.284500414@linuxfoundation.org> References: <20200411115508.284500414@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: <stable.vger.kernel.org> X-Mailing-List: stable@vger.kernel.org |
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--- a/drivers/net/phy/micrel.c +++ b/drivers/net/phy/micrel.c @@ -29,6 +29,7 @@ #include <linux/micrel_phy.h> #include <linux/of.h> #include <linux/clk.h> +#include <linux/delay.h> /* Operation Mode Strap Override */ #define MII_KSZPHY_OMSO 0x16 @@ -738,6 +739,12 @@ static int kszphy_resume(struct phy_devi genphy_resume(phydev); + /* After switching from power-down to normal mode, an internal global + * reset is automatically generated. Wait a minimum of 1 ms before + * read/write access to the PHY registers. + */ + usleep_range(1000, 2000); + ret = kszphy_config_reset(phydev); if (ret) return ret;