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Date:	Sat, 14 May 2016 13:27:31 +0530
From:	Vinod Koul <>
To:	Kuninori Morimoto <>
Cc:	Geert Uytterhoeven <>,
	Laurent Pinchart <>,
	sakato <>,
	OSD2 ML <>,,
Subject: Re: [PATCH] dma: rcar-dmac: use list_add() on rcar_dmac_desc_put()

On Fri, Apr 22, 2016 at 01:50:04AM +0000, Kuninori Morimoto wrote:
> From: Kuninori Morimoto <>
> Current rcar_dmac_desc_put() is using list_add_tail() in order to
> push used descriptor to list of free descriptors, and next DMA transfer
> try to reuse it from this list. But because it is using *_tail(),
> this reuse effect can't be obtained without using all of them.
> For a longer-term solution, we should allocate hardware descriptors
> using GFP_KERNEL instead of GFP_NOWAIT, but it is difficult today.
> This patch uses list_add() instead of list_add_tail() for short-term
> solution.

Applied, thanks


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