linux-kernel - Re: [PATCH v2 1/2] dmaengine: Add cleanup FREE defines for dma_async_tx

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Message-ID: <aUF0Yu5Cexvm7JFe@vaman>
Date: Tue, 16 Dec 2025 20:31:54 +0530
From: Vinod Koul <vkoul@...nel.org>
To: Dave Jiang <dave.jiang@...el.com>
Cc: Frank Li <Frank.li@....com>, Dong Aisheng <aisheng.dong@....com>,
	Andi Shyti <andi.shyti@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, dmaengine@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	carlos.song@....com
Subject: Re: [PATCH v2 1/2] dmaengine: Add cleanup FREE defines for
 dma_async_tx_descriptor

On 04-12-25, 08:07, Dave Jiang wrote:
> 
> 
> On 12/3/25 6:30 PM, Frank Li wrote:
> > On Wed, Dec 03, 2025 at 03:48:41PM -0700, Dave Jiang wrote:
> >>
> >>
> >> On 10/3/25 9:26 AM, Frank Li wrote:
> >>> Add cleanup FREE defines for dma_async_tx_descriptor to support automatic
> >>> cleanup and simplify error handling.
> >>>
> >>> Signed-off-by: Frank Li <Frank.Li@....com>
> >>> ---
> >>> Check patch report exceed 100 chars, but it's still better put into one
> >>> line to keep consistent with other DEFINE_FREE and better readablity
> >>>
> >>> change in v2
> >>> - remove surpoiouse remove empty line
> >>> ---
> >>>  include/linux/dmaengine.h | 3 +++
> >>>  1 file changed, 3 insertions(+)
> >>>
> >>> diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
> >>> index 99efe2b9b4ea9844ca6161208362ef18ef111d96..27fa1646a807c49c781e1bce9e3e7d9a3c66f41d 100644
> >>> --- a/include/linux/dmaengine.h
> >>> +++ b/include/linux/dmaengine.h
> >>> @@ -5,6 +5,7 @@
> >>>  #ifndef LINUX_DMAENGINE_H
> >>>  #define LINUX_DMAENGINE_H
> >>>
> >>> +#include <linux/cleanup.h>
> >>>  #include <linux/device.h>
> >>>  #include <linux/err.h>
> >>>  #include <linux/uio.h>
> >>> @@ -1612,6 +1613,8 @@ static inline int dmaengine_desc_free(struct dma_async_tx_descriptor *desc)
> >>>  	return desc->desc_free(desc);
> >>>  }
> >>>
> >>> +DEFINE_FREE(dma_async_tx_descriptor, struct dma_async_tx_descriptor *, if (_T) dmaengine_desc_free(_T))
> >>
> >> maybe free_dma_async_tx may be clearer as the name vs dma_async_tx_descriptor.
> > 
> > If that, 'dmaengine_desc_free' is better because avoid create new name for
> > it.
> 
> That works too.

Agree, it is better name

-- 
~Vinod