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 ECC111FC7F5; Wed, 11 Dec 2024 02:53:37 +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=1733885618; cv=none; b=VcNdTJEMd5v2/yUQoD1R/DriHqEjSlzQzrt9q+HZCXQ/AfzsZyd/FFcjA1Y6z3c7uMunP7EdYRhZPCi2H81MWfGGOW4XTrgLI4kJFeqrGo2bUIP5eqbIaAT+5RUf1LBaBmBNEtrOXUkEN9W2Gag3EGyX0CEEX5/kQsDMxPZcBjM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733885618; c=relaxed/simple; bh=kgWBMklWM8V29sGMM6VzfCLkm4RGB7Q58jibb4q0dC4=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=IyioxBYl3gUTGEkBEaP8WvG6kkiMVpMy943RHqvvjJHSBT9TjThG5nNcgMrvGuorWK6swecNRrflb6od7GYDbHvGzBJyAjuzOj179Ma+n4US2p4WN1/cFcHJ+W2szwbecOChAy4zBmocpt5HJnTWqoyFGPC5ZS/7IhX+iy4kB0E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=k5szOOaQ; 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="k5szOOaQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E696EC4CEE3; Wed, 11 Dec 2024 02:53:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733885617; bh=kgWBMklWM8V29sGMM6VzfCLkm4RGB7Q58jibb4q0dC4=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=k5szOOaQmi8sDeBJ6d44SGuuLSoP6QRhYk6qZCmdgFoNndLjLaYN+xMDBcZewEQXC 07BiOtkOd/TySTUM5ITEE4i2Za0ubi0T3y/swOlR6LKblpQQsw0ksWYcy9Nul7MBgu Vf/zUV+eaeh2xsJn7BEACaFuqE6GWBGNNtsLsb3mPzbqisgmVX/gLLo3snx4gZZX6C YL1iIuwI4qn8KTcZI8WpL5+10O+7kkepR7ZS9+abQ4N6LzefU7RT3YEMwPveMDbL2D AKnk2FeoyYdrFaGtdULLYksZhP/0I17r5RwckQuZO/Wrf0ccaud6k1KpYFuGkUVbGt kO4bKGun8PF7Q== Date: Tue, 10 Dec 2024 18:53:35 -0800 From: Jakub Kicinski To: Oleksij Rempel Cc: "David S. Miller" , Eric Dumazet , Paolo Abeni , Woojung Huh , Andrew Lunn , kernel@pengutronix.de, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, UNGLinuxDriver@microchip.com, Phil Elwell Subject: Re: [PATCH net-next v1 04/11] net: usb: lan78xx: Add error handling to lan78xx_get_regs Message-ID: <20241210185335.7568ce45@kernel.org> In-Reply-To: <20241209130751.703182-5-o.rempel@pengutronix.de> References: <20241209130751.703182-1-o.rempel@pengutronix.de> <20241209130751.703182-5-o.rempel@pengutronix.de> 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 Mon, 9 Dec 2024 14:07:44 +0100 Oleksij Rempel wrote: > Update `lan78xx_get_regs` to handle errors during register and PHY > reads. Log warnings for failed reads and exit the function early if an > error occurs. This ensures that invalid data is not returned to users. Should we zero out all the returned regs, too? Make it more obvious we failed.