From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 05822559CA1; Wed, 9 Sep 2026 12:39:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788957600; cv=none; b=XxWcWdsKywu47qQHDrzwAlgJwm7wr82ojYm4YO9+1QjUJXWOWgPrO/h/7Fng85j4SMidtT/bvg56Xqy55rHn8ehv/Nwox8zZfzTQU94qQwz3cd+xLaEWc42E4fbcTKiK8vCcF4yVcIsBoNpDtUUJZicTCH+uCmu05PTJ5sJ3p+k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788957600; c=relaxed/simple; bh=xbYe82dXs9fCME0YyCdgSfK0I2LWsvQv0NiGKLBhX6s=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=qldur3VqFqnsLfShCIIj2V2g10xv3XnWSJtmQhsBKDXX0wezP6LPf1Nxk7kCAw9Oxib537ZlMQOSvQwc0GAJ+X1mQq9Wo8BLRm+LDwB8T1g3F2xB6zFGdNhO0gdIHj3tkx5MDCdEosY3f6KQC0hrrQ05J6t5PtIfZ/b1roURoUs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Rj1IrIP4; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Rj1IrIP4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 780A31F00A3A; Wed, 9 Sep 2026 12:39:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788957598; bh=4wjDBD4eTQIvB0n0DbUPkYQj15kwWSjuBDp4QqdtW1U=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=Rj1IrIP44mOF3Q6zyOQy+1mwdi2cS/MrkriYAymLSDMvvPBZjd2BSJywkaPirWg8+ jv/pq79HZ+t8lNaivmIEMURx7xVM9uZRHBtyl4CZpzxBScOgkPil862x8VRJkZQ8yw vzXO0wfO/FidAIalJo0eqfh/4Ta6rD6cqcF/nQN2DB91B/G/QVs7KEZaIaVmSft2A6 tYZ4I43+QPYvVgApIkob6jsUrdpDLGK+t9Fq+CdwgOTVg0a++n811WNpc6Z9csJTwe ppUYxVQ62KkGkRjhIUVlKTSDS0Ho258mO1pXA2cLr1XatH7NSfmBlCr9xQZXP4MaiG 6/OplGs7fuUMQ== Date: Wed, 9 Sep 2026 18:09:54 +0530 From: Vinod Koul To: Amelie Delaunay Cc: Frank.Li@oss.nxp.com, Jacky Huang , Shan-Chun Hung , Frank Li , Paul Cercueil , Eugeniy Paltsev , Andy Shevchenko , Binbin Zhou , Patrice Chotard , Maxime Coquelin , Alexandre Torgue , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Thierry Reding , Jonathan Hunter , Ludovic Desroches , Viresh Kumar , Keguang Zhang , Andreas =?iso-8859-1?Q?F=E4rber?= , Manivannan Sadhasivam , Daniel Mack , Haojian Zhuang , Robert Jarzmik , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Kelvin Cao , Logan Gunthorpe , Laxman Dewangan , Vignesh Raghavendra , linux-arm-kernel@lists.infradead.org, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-trace-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, linux-actions@lists.infradead.org, linux-sunxi@lists.linux.dev, imx@lists.linux.dev, Frank Li Subject: Re: [PATCH v3 3/4] dmaengine: add (dmaengine|vchan)_chan_dev() helper Message-ID: References: <20260904-dma-chan_dev-rename-v3-0-685601b0b788@nxp.com> <20260904-dma-chan_dev-rename-v3-3-685601b0b788@nxp.com> Precedence: bulk X-Mailing-List: linux-trace-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 07-09-26, 10:55, Amelie Delaunay wrote: > Hi Frank, > > On 9/4/26 23:49, Frank.Li@oss.nxp.com wrote: > [...] > > I don't think removing chan2dev() function from the STM32 DMA drivers is an > improvement, since the parameter is a `stm32` chan, not a `dma_chan`. > chan2dev() was meant to expose the channel device behind the `stm32` wrapper > and keep logging concise. > > > diff --git a/drivers/dma/stm32/stm32-dma.c b/drivers/dma/stm32/stm32-dma.c > > index 3e8151e2ad75a..4688cebaf7f7a 100644 > > --- a/drivers/dma/stm32/stm32-dma.c > > +++ b/drivers/dma/stm32/stm32-dma.c > > @@ -248,11 +248,6 @@ static struct stm32_dma_desc *to_stm32_dma_desc(struct virt_dma_desc *vdesc) > > return container_of(vdesc, struct stm32_dma_desc, vdesc); > > } > > -static struct device *chan2dev(struct stm32_dma_chan *chan) > > -{ > > - return &chan->vchan.chan.dev->device; > > -} > > - > > I would rather keep it as: > > static struct device *chan2dev(struct stm32_dma_chan *chan) > { > return vchan_chan_dev(&chan->vchan); > } > > and then drop all further updates. I would say better to use a common macro than keep one for yours -- ~Vinod