2012/7/10, Cooper Yuan cooperyuan@gmail.com:
Set dma_buf exporter permission as ReadWrite, otherwise mmap will get errno 13: permission denied.
Signed-off-by: Cooper Yuan cooperyuan@gmail.com
drivers/gpu/drm/exynos/exynos_drm_dmabuf.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c index 613bf8a..e4eeb0b 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c @@ -29,6 +29,7 @@ #include "exynos_drm_drv.h" #include "exynos_drm_gem.h"
+#include <linux/fcntl.h> #include <linux/dma-buf.h>
static struct sg_table *exynos_pages_to_sg(struct page **pages, int nr_pages, @@ -179,7 +180,7 @@ struct dma_buf *exynos_dmabuf_prime_export(struct drm_device *drm_dev, struct exynos_drm_gem_obj *exynos_gem_obj = to_exynos_gem_obj(obj);
return dma_buf_export(exynos_gem_obj, &exynos_dmabuf_ops,
exynos_gem_obj->base.size, 0600);
exynos_gem_obj->base.size, O_RDWR);
this way is not good. the permission should be set from user so use flags variable.
}
struct drm_gem_object *exynos_dmabuf_prime_import(struct drm_device
*drm_dev,
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