From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gerald Schaefer Subject: Re: [PATCH 19/44] s390: implement ->mapping_error Date: Thu, 8 Jun 2017 18:23:11 +0200 Message-ID: <20170608182311.05cced9e@thinkpad> References: <20170608132609.32662-1-hch@lst.de> <20170608132609.32662-20-hch@lst.de> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20170608132609.32662-20-hch@lst.de> Sender: linux-ia64-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" To: Christoph Hellwig Cc: x86@kernel.org, linux-arm-kernel@lists.infradead.org, xen-devel@lists.xenproject.org, linux-c6x-dev@linux-c6x.org, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linux-mips@linux-mips.org, openrisc@lists.librecores.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, dmaengine@vger.kernel.org, linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org, iommu@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org On Thu, 8 Jun 2017 15:25:44 +0200 Christoph Hellwig 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 Acked-by: Gerald Schaefer