From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=156.67.10.101 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793890253; b=YaP/OSMxw07/YYvPoYskwYy09LKQ+VkcUBLm2sap8KhPagUvcASBwGAX5CbBS/8pMgo1 EXBu8vTh9DPwep2IzHBCjQrOpkgahLn2J4tNgR2LLMprj2nwONX4qgOZiWt50L2E09syZ ewlTL8xmv6WuiMCCXkdgxqLU4UnH1Xkq/Wh88r8BPsVsSe3iD2OngAMCyKGEdENFN4Jmg GZ/UH5JF2eSLs66f4T6QopIiAXHkVdCYyKxBgn2NecUCxjKv0srd67uzcqLF39hfsywVA n4/7uY8b6Vbvrpc2ayupyCf2Xky22AYx6/mQbeOXOckX3dySoQGRv4o/V2dCLXKIbdw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793890253; h=DMARC-Filter:DKIM-Signature:Received:Date:From:To:Cc:Subject: Message-ID:References:MIME-Version:Content-Type:Content-Disposition: In-Reply-To; bh=0QVs4UmW82faR41mfhaV+h9cFqICsfNx9N9UbV3NoAI=; b=ra2CnasgvyUHBmR29AY4TKSkNzceAQhFfsISJ61slGBQ8mb7Mz6zDsV0Cd7Im6D/b9a1 YMclkrH4N5DgFwgdSbLePiFf8QL/LexwFaxBAi+ZA5/EUrxAMtzMTDVvbpyb8BPCGTLDz 0HKCPXcfwKxgtXotgDJ7mpxj7L0QBB782vG5G23qYmdEMwFfNQHNugIpBvAzOed3RtCBG WQYVkmbCJdavs0dIbd8edC/VPoczBZmJhtPsVZfDX7bG6C3gqFxQ7etazzG4oeQoTWWs/ 90lphiPYNDCTzo2VSB3rwmAAhs5bZgT4xK7Nfqto2dhQlG1mVi/l9f/a+cszECBNAlg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=lunn.ch; spf=pass smtp.mailfrom=lunn.ch; dkim=pass header.d=lunn.ch header.i=@lunn.ch header.a=rsa-sha256 header.s=20171124 header.b=DNoY4vhi; arc=none smtp.remote-ip=156.67.10.101 Received: from vps0.lunn.ch (vps0.lunn.ch [156.67.10.101]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CCCD1606A31B; Thu, 5 Nov 2026 14:50:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org CCCD1606A31B Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=lunn.ch Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=lunn.ch Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=lunn.ch header.i=@lunn.ch header.a=rsa-sha256 header.s=20171124 header.b=DNoY4vhi DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lunn.ch; s=20171124; h=In-Reply-To:Content-Disposition:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:From:Sender:Reply-To:Subject: Date:Message-ID:To:Cc:MIME-Version:Content-Type:Content-Transfer-Encoding: Content-ID:Content-Description:Content-Disposition:In-Reply-To:References; bh=0QVs4UmW82faR41mfhaV+h9cFqICsfNx9N9UbV3NoAI=; b=DNoY4vhiJHpefpc0K6k4ZEejnE z7BMrzdQ39NWlIM0NCy3i0azEyJUm7qdCzDTWvFOnHtGFFojpS2FV6+ZhBEddcut8CT3kNR7w9vtJ EbHP1y7vEIfqNZfBSV2OfralcPASt52j8xroqTNGzcNbawSyJl9tZWOJnJhANmXQBWjA=; Received: from andrew by vps0.lunn.ch with local (Exim 4.94.2) (envelope-from ) id 1xOynT-00Eacz-Jh; Thu, 05 Nov 2026 15:50:35 +0100 Date: Thu, 5 Nov 2026 15:50:35 +0100 From: Andrew Lunn To: Leon Romanovsky Cc: Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich , Dmitry Torokhov , Heiner Kallweit , Russell King , "David S. Miller" , Jakub Kicinski , Paolo Abeni , Johannes Berg , Jonathan Corbet , Shuah Khan , Randy Dunlap , Bjorn Helgaas , "Joerg Roedel (AMD)" , Suravee Suthikulpanit , Vasant Hegde , Will Deacon , Robin Murphy , David Woodhouse , Lu Baolu , Johan Hovold , Eric Dumazet , Marcel Holtmann , Luiz Augusto von Dentz , Nipun Gupta , Nikhil Agarwal , Pieter Jansen van Vuuren , linux-kernel@vger.kernel.org, driver-core@lists.linux.dev, linux-input@vger.kernel.org, netdev@vger.kernel.org, linux-wireless@vger.kernel.org, linux-usb@vger.kernel.org, linux-bluetooth@vger.kernel.org, linux-acpi@vger.kernel.org, linux-doc@vger.kernel.org, linux-pci@vger.kernel.org, iommu@lists.linux.dev, Jason Gunthorpe Subject: Re: [PATCH 03/17] net: phy: Attach generic PHY drivers through the driver core Message-ID: <9866a873-e71d-48cd-9153-be1bfce51eda@lunn.ch> References: <20261105-device-trust-core-v1-0-1e536825b4eb@nvidia.com> <20261105-device-trust-core-v1-3-1e536825b4eb@nvidia.com> X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261105-device-trust-core-v1-3-1e536825b4eb@nvidia.com> On Thu, Nov 05, 2026 at 01:42:16PM +0200, Leon Romanovsky wrote: > From: Leon Romanovsky > > The generic PHY fallback probes directly before publishing its binding, > bypassing driver-core admission and supplier checks. > > Attach through the driver core so admission precedes functional setup. > Callers hold RTNL, which a concurrent bind of a specific driver may wait > for with the device lock held, so for this flow let's add > device_driver_try_attach() so the attachment never waits for that lock. FYI: This code is fragile, and causes issues. I will need to stare long and hard at it before accepting it. So i'm unlikely to do that until the basic idea is accepted. I also wounder how a PHY is a threat. What is your threat model for an Ethernet PHY? Andrew