Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1340326
| From | Alexandre Courbot <acourbot@nvidia.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 1/2] drm/tegra: Set DMA ops |
| Date | 2016-02-23 07:30 +0100 |
| Message-ID | <r5eDU-1jC-5@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
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 <acourbot@nvidia.com> --- 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 <linux/host1x.h> #include <linux/iommu.h> +#include <linux/of_device.h> #include <drm/drm_atomic.h> #include <drm/drm_atomic_helper.h> @@ -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
Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread
[PATCH 1/2] drm/tegra: Set DMA ops Alexandre Courbot <acourbot@nvidia.com> - 2016-02-23 07:30 +0100
Re: [PATCH 1/2] drm/tegra: Set DMA ops Thierry Reding <thierry.reding@gmail.com> - 2016-02-23 16:30 +0100
Re: [PATCH 1/2] drm/tegra: Set DMA ops Alexandre Courbot <acourbot@nvidia.com> - 2016-02-24 09:40 +0100
csiph-web