linux-kernel - Re: [PATCH] drm/nouveau/platform: add IOMMU dependency

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Message-ID: <20150519133225.GA26555@ulmo.nvidia.com>
Date:	Tue, 19 May 2015 15:32:27 +0200
From:	Thierry Reding <treding@...dia.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	David Airlie <airlied@...ux.ie>,
	Alexandre Courbot <acourbot@...dia.com>,
	Ben Skeggs <bskeggs@...hat.com>,
	<dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] drm/nouveau/platform: add IOMMU dependency

On Tue, May 19, 2015 at 02:53:26PM +0200, Arnd Bergmann wrote:
> The recently added iommu code in the nouveau driver fails to build
> when the IOMMU support is disabled:
> 
> drivers/gpu/drm/nouveau/nouveau_platform.c: In function 'nouveau_platform_probe_iommu':
> drivers/gpu/drm/nouveau/nouveau_platform.c:113:41: error: 'const struct iommu_ops' has no mem
> 
> To avoid the build error, this now adds an explicit dependency on the
> IOMMU implementation.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Fixes: 58fd9375c2c5 ("drm/nouveau/platform: probe IOMMU if present")

Acked-by: Thierry Reding <treding@...dia.com>

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