From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
Subject: Re: [PATCH 3/9] iommu/dma-iommu: Add iommu_dma_copy_reserved_iova,
 iommu_dma_apply_resv_region to the dma-iommu api
Date: Sun, 14 Apr 2019 23:31:34 -0700
Message-ID: <20190415063134.GB1377@infradead.org>
References: <20190411184741.27540-1-tmurphy@arista.com>
 <20190411184741.27540-4-tmurphy@arista.com>
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To: Tom Murphy <tmurphy-nzgTgzXrdUbQT0dZR+AlfA@public.gmane.org>
Cc: linux-samsung-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Heiko Stuebner <heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org>, dima-nzgTgzXrdUbQT0dZR+AlfA@public.gmane.org, Marc Zyngier <marc.zyngier-5wv7dgnIgG8@public.gmane.org>, linux-arm-msm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Krzysztof Kozlowski <krzk-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, David Brown <david.brown-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, Kukjin Kim <kgene-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, murphyt7-/Zw1syy4LHg@public.gmane.org, Andy Gross <andy.gross-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>, Robin Murphy <robin.murphy-5wv7dgnIgG8@public.gmane.org>, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Matthias Brugger <matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
List-Id: linux-rockchip.vger.kernel.org

On Thu, Apr 11, 2019 at 07:47:32PM +0100, Tom Murphy via iommu wrote:
> +
> +	WARN_ON_ONCE(iommu_dma_reserve_iova(domain, region->start, end) == NULL);

Overly long line..