drm: add mmap function to prime helpers
This adds to call low-level mmap() from prime helpers.
Signed-off-by: Joonyoung Shim <[email protected]>
Acked-by: Laurent Pinchart <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index ff5fece..85e450e 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -245,7 +245,13 @@
static int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf,
struct vm_area_struct *vma)
{
- return -EINVAL;
+ struct drm_gem_object *obj = dma_buf->priv;
+ struct drm_device *dev = obj->dev;
+
+ if (!dev->driver->gem_prime_mmap)
+ return -ENOSYS;
+
+ return dev->driver->gem_prime_mmap(obj, vma);
}
static const struct dma_buf_ops drm_gem_prime_dmabuf_ops = {
