netdev - Re: [PATCH 5/6] net: fec: use dma_alloc

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Message-ID: <20231012140038.GA8513@lst.de>
Date: Thu, 12 Oct 2023 16:00:38 +0200
From: Christoph Hellwig <hch@....de>
To: Greg Ungerer <gerg@...ux-m68k.org>
Cc: Michael Schmitz <schmitzmic@...il.com>, Christoph Hellwig <hch@....de>,
	Robin Murphy <robin.murphy@....com>, iommu@...ts.linux.dev,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Wei Fang <wei.fang@....com>, Shenwei Wang <shenwei.wang@....com>,
	Clark Wang <xiaoning.wang@....com>,
	NXP Linux Team <linux-imx@....com>, linux-m68k@...ts.linux-m68k.org,
	netdev@...r.kernel.org, Jim Quinlan <james.quinlan@...adcom.com>
Subject: Re: [PATCH 5/6] net: fec: use dma_alloc_noncoherent for m532x

On Thu, Oct 12, 2023 at 11:25:00PM +1000, Greg Ungerer wrote:
> Not sure I follow. This is the opposite of the case above. The noncoherent alloc
> and cache flush should be performed if ColdFire and any of CONFIG_HAVE_CACHE_CB,
> CONFIG_CACHE_D or CONFIG_CACHE_BOTH are set - since that means there is data
> caching involved.

FYI, this is what I ended up with this morning:

http://git.infradead.org/users/hch/misc.git/commitdiff/ea7c8c5ca3f158f88594f4f1c9a52735115f9aca

Whole branch:

http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/dma-coherent-deps