linux-kernel - Re: [PATCH 1/1] dmaengine: mxs-dma: switch from dma_coherent to dma

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Message-ID: <ZdTjrzYIiD8pwHk8@lizhi-Precision-Tower-5810>
Date: Tue, 20 Feb 2024 12:38:55 -0500
From: Frank Li <Frank.li@....com>
To: Fabio Estevam <festevam@...il.com>
Cc: Vinod Koul <vkoul@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	NXP Linux Team <linux-imx@....com>,
	"open list:DMA GENERIC OFFLOAD ENGINE SUBSYSTEM" <dmaengine@...r.kernel.org>,
	"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" <linux-arm-kernel@...ts.infradead.org>,
	open list <linux-kernel@...r.kernel.org>, imx@...ts.linux.dev
Subject: Re: [PATCH 1/1] dmaengine: mxs-dma: switch from dma_coherent to
 dma_pool

On Mon, Feb 19, 2024 at 01:23:22PM -0300, Fabio Estevam wrote:
> On Mon, Feb 19, 2024 at 12:57 PM Frank Li <Frank.Li@....com> wrote:
> >
> > From: Han Xu <han.xu@....com>
> >
> > Using dma_pool to manage dma descriptor memory.
> 
> Please clearly describe the motivation for doing this.

This try to fix a cma_alloc failure. But it is not correct to use dma_pool.
let's work out a better method.

Frank