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Date: Tue, 13 Oct 2026 16:33:54 +0200
From: Andi Shyti <andi.shyti@kernel.org>
To: Frank.Li@oss.nxp.com
Cc: Dong Aisheng <aisheng.dong@nxp.com>, Frank Li <Frank.Li@nxp.com>, 
	Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix Kernel Team <kernel@pengutronix.de>, 
	Fabio Estevam <festevam@gmail.com>, 
	"open list:FREESCALE IMX LPI2C DRIVER" <linux-i2c@vger.kernel.org>, "open list:FREESCALE IMX LPI2C DRIVER" <imx@lists.linux.dev>, 
	"moderated list:ARM/FREESCALE IMX / MXC / LAYERSCAPE ARM ARCHIT..." <linux-arm-kernel@lists.infradead.org>, open list <linux-kernel@vger.kernel.org>, vkoul@kernel.org
Subject: Re: [PATCH 1/1] i2c: imx-lpi2c: remove dmaengine_desc_free()
Message-ID: <as5BOk8aLCx_s6_T@zenone.zhora.eu>
References: <20260929190605.3516147-1-Frank.Li@oss.nxp.com>
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In-Reply-To: <20260929190605.3516147-1-Frank.Li@oss.nxp.com>

Hi Frank,

On Tue, Sep 29, 2026 at 03:06:05PM -0400, Frank.Li@oss.nxp.com wrote:
> From: Frank Li <Frank.Li@nxp.com>
> 
> dmaengine_desc_free() is designed for DMA_CTRL_REUSE. If DMA_CTRL_REUSE
> is not set, dmaengine_desc_free() will return -EPERM.
> 
> 	if (!dmaengine_desc_test_reuse(desc))
> 		return -EPERM;
> 
> So calling dmaengine_desc_free() does nothing. dmaengine_terminate_(a)sync()
> will free all already allocated descriptors.
> 
> Signed-off-by: Frank Li <Frank.Li@nxp.com>

pushed to i2c/i2c.

Thanks,
Andi