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 336A827466A; Tue, 21 Oct 2025 07:08:42 +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=1761030523; cv=none; b=RLYXOIddI/lh62c0YIgx0qGgY6+oTJbjjLE/CeFMmQ4BjvPEgLN/LoTQYWGLrNGwFBLSwtvhgFV+3fY3THnE+59s9dXsBLNYLxGHFCnt7vTkEQRAs0zAK44kWcgySfjEnrR1TOdX4GI4ufzDwvFaM1DQJaSfAu5xCfz8IpKNLnI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761030523; c=relaxed/simple; bh=AlYnsYydAWPMUtRG9rMiMoSf2ckt22knitCS1hNP/Cw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=TTZ7preS5oFgb9cv4uVlWbR0uh8SxEDebw/NKlRKWImA9nuMGOmz9Gf7NsUhM4DoHpLg0NUwIaBFquOTWganLVyBVEddiHgYdRoBC1fAd/aPk3EJ81898XuO6mH85+X6P7mOxwQytUrIIyNU8GLVw5e4Vl6c2HiFF2hgO/Rdqmo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=DZ46bR3t; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="DZ46bR3t" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 04B43C4CEF1; Tue, 21 Oct 2025 07:08:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1761030522; bh=AlYnsYydAWPMUtRG9rMiMoSf2ckt22knitCS1hNP/Cw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=DZ46bR3tyoG9B7ocuiTXq+XbHIOm6yzHBjgbLDs9oEuE+qIAhHD2FkS81f9wBVpIp aaeNDNQZ070vVm2I50pUDySVX4SxT4sjK3zOKVvl0vXATSES/r5by7IrKfr0NasAiK 89knbz42T1zx6AyRV8/RBrBvwWF/ChKo9XVO5ZHU= Date: Tue, 21 Oct 2025 09:08:39 +0200 From: Greg KH To: Danilo Krummrich Cc: rafael@kernel.org, bhelgaas@google.com, kwilczynski@kernel.org, david.m.ertman@intel.com, ira.weiny@intel.com, leon@kernel.org, acourbot@nvidia.com, ojeda@kernel.org, alex.gaynor@gmail.com, boqun.feng@gmail.com, gary@garyguo.net, bjorn3_gh@protonmail.com, lossin@kernel.org, a.hindborg@kernel.org, aliceryhl@google.com, tmgross@umich.edu, pcolberg@redhat.com, rust-for-linux@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/8] Device::drvdata() and driver/driver interaction (auxiliary) Message-ID: <2025102110-marital-print-8a1b@gregkh> References: <20251020223516.241050-1-dakr@kernel.org> Precedence: bulk X-Mailing-List: rust-for-linux@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: <20251020223516.241050-1-dakr@kernel.org> On Tue, Oct 21, 2025 at 12:34:22AM +0200, Danilo Krummrich wrote: > tl;dr: > > Implement a safe Device::drvdata() accessor (used for driver to > driver interactions) based on the auxiliary bus. > > This provides a way to derive a driver's device private data when > serving as a parent in a driver hierarchy, such as a driver utilizing > the auxiliary bus. > > Please have a look at patch 8 ("samples: rust: auxiliary: illustrate > driver interaction") to see how it turns out. It turned out much nicer than I expected, nice work! Reviewed-by: Greg Kroah-Hartman