Received: by 2002:a25:2c96:0:0:0:0:0 with SMTP id s144csp1427946ybs; Mon, 25 May 2020 16:08:49 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzys2cBs8r2LD2allp9dmhJMelitoZFZ8yGOK/O0ubaV2WwyFbORHn7KpmDuZ+KTqS2j4KO X-Received: by 2002:a17:906:fcb9:: with SMTP id qw25mr21020290ejb.326.1590448129111; Mon, 25 May 2020 16:08:49 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1590448129; cv=none; d=google.com; s=arc-20160816; b=sts9IgrLqR/2Z6WL0COSvEoxpHtDouwndpJKBnDw1NbYmG1pqvJyZO1aNMNT4GuAFL UbIDBz/jTdvooZv9MbgcoHGXZ6gFi8wmfUsY6CiFbszrU/2C0ZHJVJ4Xhv8LLKVQm84T 6tj0WHT8TapH7lv+FCgg0huvClPvooRc4BWwv1pA6B3s5f4vo6oBKzdLdIzUOwkN1OhP OiJgBzlFtEZVMKaSBFO8DgXNBYefz3WrxlGf7j2NeOxtqu3MU7/04eLN59kkLBj9BXpj qAo7Vf56fTYzBGbcvZPpSD0an+2OimK+NlsVWhfKs/hJq67D2lfGOA5wLes1hevYb2Cv KERA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :dkim-signature; bh=xU2BR0jRNvqfWcp6juRFsn6EmW9e+POp1k0nZuFOpOY=; b=LSW3p8KFel5HFuLiDitfTAGzjCfENIlE2Ezs2mBobf3ky7F6xRwCk95qNAPTirOPad JOQk4t1h5PFVCrBhPCr33OgXpJR+Q3gj0fn2+a4Dd4++PXXhhHfRIGW6d5RM0gRxm5yf Meihag5doFL+yd4dCtoH/7YUC8r3hyEczIio/NTNtKpo/1ZRwLJ5lV4Lc9pT4FrQZLPP KT68eu5y8aGcIo2kWTxpqEAEfmp8F8lBWahu7LSjGGTqUHo6fbZQM1EoYCRA8LdSb397 7wCcCNWE545OZ7JESYNsrXyZAlT7J48Tq3onpWGdZsq2Sryr53ZPhrvhlMUExSKyu/VZ nkVA== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail header.i=@lunn.ch header.s=20171124 header.b=lZ8YRvyZ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id n1si10244792edo.310.2020.05.25.16.08.26; Mon, 25 May 2020 16:08:49 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=fail header.i=@lunn.ch header.s=20171124 header.b=lZ8YRvyZ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388982AbgEYXGe (ORCPT + 99 others); Mon, 25 May 2020 19:06:34 -0400 Received: from vps0.lunn.ch ([185.16.172.187]:48806 "EHLO vps0.lunn.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388886AbgEYXG3 (ORCPT ); Mon, 25 May 2020 19:06:29 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lunn.ch; s=20171124; h=In-Reply-To:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=xU2BR0jRNvqfWcp6juRFsn6EmW9e+POp1k0nZuFOpOY=; b=lZ8YRvyZJomIn72luInBLWrHRt t6ip7f5SVtNVXVPLsfdM/ji9lAQGgGiNal7cbaDtXuR90CjQ68K/YRCc/cVaxbxLs8ucCsosRe0O8 vkk6SayWmP1X82ujoMg0f17gFtCw4fA/x4Uj3Yst7o/ggSRnRlvD3NP7XUVMWrjNMoK8=; Received: from andrew by vps0.lunn.ch with local (Exim 4.93) (envelope-from ) id 1jdMAk-003EaY-Ez; Tue, 26 May 2020 01:06:18 +0200 Date: Tue, 26 May 2020 01:06:18 +0200 From: Andrew Lunn To: Jeremy Linton Cc: Russell King - ARM Linux admin , netdev@vger.kernel.org, davem@davemloft.net, f.fainelli@gmail.com, hkallweit1@gmail.com, madalin.bucur@oss.nxp.com, calvin.johnson@oss.nxp.com, linux-kernel@vger.kernel.org Subject: Re: [RFC 04/11] net: phy: Handle c22 regs presence better Message-ID: <20200525230618.GE768009@lunn.ch> References: <20200522213059.1535892-1-jeremy.linton@arm.com> <20200522213059.1535892-5-jeremy.linton@arm.com> <20200523183731.GZ1551@shell.armlinux.org.uk> <20200525100612.GM1551@shell.armlinux.org.uk> <63ca13e3-11ea-3ddf-e1c7-90597d4a5f8c@arm.com> <20200525220614.GC768009@lunn.ch> <8868af66-fc1a-8ec2-ab75-123bffe2d504@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8868af66-fc1a-8ec2-ab75-123bffe2d504@arm.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > I know for sure we find phys that previously weren't found. That is in itself somewhat dangerous. Those using primitive configuration systems are probably going to use phy_find_first(), rather than an address on the bus. I always recommend against that, because if another PHY suddenly pops up on the bus, bad things can happen. Andrew