From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexandre Courbot Subject: [PATCH 1/2] drm/tegra: Set DMA ops Date: Tue, 23 Feb 2016 15:25:53 +0900 Message-ID: <1456208754-12362-1-git-send-email-acourbot@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Sender: linux-kernel-owner@vger.kernel.org To: Thierry Reding , =?UTF-8?q?Terje=20Bergstr=C3=B6m?= , Stephen Warren Cc: dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, gnurou@gmail.com, Alexandre Courbot List-Id: linux-tegra@vger.kernel.org The current settings leaves the DRM device's dma_ops field NULL, which makes it use the dummy DMA ops on arm64 and return an error whenever we try to import a buffer. Call of_dma_configure() with a NULL node (since the device is not spawn from the device tree) so that arch_setup_dma_ops() is called and sets the default ioswtlb DMA ops. Signed-off-by: Alexandre Courbot --- drivers/gpu/drm/tegra/drm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index d347188bf8f4..bc0555adecaf 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -9,6 +9,7 @@ #include #include +#include #include #include @@ -990,6 +991,7 @@ static int host1x_drm_probe(struct host1x_device *dev) return -ENOMEM; dev_set_drvdata(&dev->dev, drm); + of_dma_configure(drm->dev, NULL); err = drm_dev_register(drm, 0); if (err < 0) -- 2.7.1