linux-kernel - Re: [PATCH 19/44] s390: implement ->mapping

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Message-Id: <20170608182311.05cced9e@thinkpad>
Date:   Thu, 8 Jun 2017 18:23:11 +0200
From:   Gerald Schaefer <gerald.schaefer@...ibm.com>
To:     Christoph Hellwig <hch@....de>
Cc:     x86@...nel.org, linux-arm-kernel@...ts.infradead.org,
        xen-devel@...ts.xenproject.org, linux-c6x-dev@...ux-c6x.org,
        linux-hexagon@...r.kernel.org, linux-ia64@...r.kernel.org,
        linux-mips@...ux-mips.org, openrisc@...ts.librecores.org,
        linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
        linux-sh@...r.kernel.org, sparclinux@...r.kernel.org,
        linux-xtensa@...ux-xtensa.org, dmaengine@...r.kernel.org,
        linux-tegra@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-samsung-soc@...r.kernel.org,
        iommu@...ts.linux-foundation.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 19/44] s390: implement ->mapping_error

On Thu,  8 Jun 2017 15:25:44 +0200
Christoph Hellwig <hch@....de> wrote:

> s390 can also use noop_dma_ops, and while that currently does not return
> errors it will so in the future.  Implementing the mapping_error method
> is the proper way to have per-ops error conditions.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>

Acked-by: Gerald Schaefer <gerald.schaefer@...ibm.com>