From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4A1D722339; Wed, 26 Nov 2025 02:43:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764125017; cv=none; b=r4zGSpUwIvQi4swDf4j46JWH06yRrb2P3+UOM6Q7kUMR+Yz7yTdwKtfcO+66U6yeM0dqy1ieGW8w8UkO+FiAUtfubYCsy8xp2BiRgZcP2r/b1h9/8NgtOeoKcXDkOxUhsUfN8cGkNLgC84mZJs253R/rw1a8dmuTQXn2ymMfX34= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764125017; c=relaxed/simple; bh=+FMkMP9YZSzBOEBewlWn/akecndzrde6rgtdkYm5p00=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=sPjkaXpIV9o/zhnJJX5CFFRdRW/2KA9OT7l9xgTlHmw45k60GsQFAAGUaf51ncu9ijuuQHuQHIH6zPpiQItFKwZ7gVffk3aJYTncIVgIBZXwyGJMNEj30gZ4dfkgEuTt8FtMK/Z1bKdFn1Wyxwgx51YgjV2EKXU468gyYcaSrME= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RFv84XcV; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="RFv84XcV" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 66F5EC4CEF1; Wed, 26 Nov 2025 02:43:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1764125016; bh=+FMkMP9YZSzBOEBewlWn/akecndzrde6rgtdkYm5p00=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=RFv84XcVDz3HUczfoDn3j3wzmZyr/x6Ad1BhvzqD9Z/dKaSsRmf8IPXkAsPJW2xuE RUhvJQBDEXh1AYkqlQmfjDqJ8kvL6+7HZrbLcRSNsRzzdEPC+EyiHohH9tN5Pa7oBB j23ndLA6TGOIg/H5jtydGu1P3ora8QXoFnRYjSkMylSm4+80z0zmtLA/+Oixg+N6m4 9WXgbL3PJvN6WA28axAuBtnvP1Ea3juI6pBK8HrBATflVNXYDo8azydocmTsPbUahf 8s18Ab7LqjC12V8uCXUG71NrEbQm7BXBXHmJpZXVLmfQKYXHANeoaAWC7YbdwQZEpJ 1MHVWQsi9Ozww== Date: Tue, 25 Nov 2025 18:43:35 -0800 From: Jakub Kicinski To: Buday Csaba Cc: Andrew Lunn , Heiner Kallweit , Russell King , "David S. Miller" , Eric Dumazet , Paolo Abeni , , Subject: Re: [PATCH net-next 1/1] net: mdio: reset PHY before attempting to access ID register Message-ID: <20251125184335.040f015e@kernel.org> In-Reply-To: <6cb97b7bfd92d8dc1c1c00662114ece03b6d2913.1764069248.git.buday.csaba@prolan.hu> References: <6cb97b7bfd92d8dc1c1c00662114ece03b6d2913.1764069248.git.buday.csaba@prolan.hu> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Tue, 25 Nov 2025 12:15:51 +0100 Buday Csaba wrote: > When the ID of an Ethernet PHY is not provided by the 'compatible' > string in the device tree, its actual ID is read via the MDIO bus. > For some PHYs this could be unsafe, since a hard reset may be > necessary to safely access the MDIO registers. You may be missing exports because it doesn't build with allmodconfig: ERROR: modpost: "mdio_device_register_reset" [drivers/net/mdio/fwnode_mdio.ko] undefined! ERROR: modpost: "mdio_device_unregister_reset" [drivers/net/mdio/fwnode_mdio.ko] undefined! -- pw-bot: cr