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 4883211CBA; Wed, 29 Apr 2026 15:08:22 +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=1777475302; cv=none; b=DSlYMuvBe5ho947lo1YHAG6Rq+5pcbAlflNmXvBcEDvytE+GzQTXuKzmP6nIWK7AcjGrYSfO/yhUKBIHKzUHIEhQPaxmDwC7JsW2448vbrwKzeLeW1Vdvd9kpNxgFeCtcy6kblqOUvvHsPYX91jNp9OaOtTm1pZHCNI1vATKwQI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777475302; c=relaxed/simple; bh=1v6yu6Y0TOkhpVr86ozssxSFAtMUEknFXI14N8XRY4M=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Dy5Oe0nnVyd0im3ISx+LbezivOLL2n0jTVUQUAIJjuqyGvEgImM8BpfBe1aLs+zpnfCTNy+YaGU7cPCld7u7jwPLpRoTiHl2n2NZUmg9HPlzd0/oiT2f3zm0pDhiNpDZQaBxpPjNAJ/hRZHpegzeBTR3TYkkPPIAY4JjLUB5ZBM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gdmXAjCP; 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="gdmXAjCP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 02BE7C19425; Wed, 29 Apr 2026 15:08:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777475302; bh=1v6yu6Y0TOkhpVr86ozssxSFAtMUEknFXI14N8XRY4M=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=gdmXAjCP/v1YQOGNIns4NZSOWJB4SSRsHGWGAs5y1E9ElPw402C+yG0nTVsDzGxGX gq18rne6XqE/NlvfyMUp5kxQQFBnFjyTyfEKvIyZ+nA6CRn6A0hJPoJTcaKbef6T3u lZerAzS8WakzSvO564MzaJ8gO3JDIUzrQwfnvH3cmu/GdNbhcLs/wKPoA8taUsl/46 +YQU6OSkVI3SEFanL79NPvsXbc9uO12w8y3x+Ib2q3DgEn3ia+w6MqPLdy/tXAfH3L V4jSpJQiMqnGUJluypXJwSXE7j0yqAsl8W+aHr5uAuTerVomGnkANGHzhAdwfCEzqZ gmEzBnYnL3UAw== Received: from johan by xi.lan with local (Exim 4.98.2) (envelope-from ) id 1wI6WR-00000000lPA-3Pgr; Wed, 29 Apr 2026 17:08:19 +0200 Date: Wed, 29 Apr 2026 17:08:19 +0200 From: Johan Hovold To: Danilo Krummrich Cc: Greg Kroah-Hartman , "Rafael J . Wysocki" , driver-core@lists.linux.dev, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH] driver core: reject devices with unregistered buses Message-ID: References: <20260427102852.2174-1-johan@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Wed, Apr 29, 2026 at 04:52:08PM +0200, Danilo Krummrich wrote: > On Wed Apr 29, 2026 at 1:33 PM CEST, Johan Hovold wrote: > > It seems we have differing definitions of "bug", but to me this is > > clearly a bug in driver core. > > I think we do -- you are saying it is a bug that the driver core does not print > a warning when a caller introduces a bug on its own due to an ordering > violation. No, I'm saying that it's a bug in driver core to silently treat a device that is registered before its bus as a bus-less device. Johan