drm: add mmap function to prime helpers

[karo-tx-linux.git] / drivers / gpu / drm / drm_prime.c

diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index ff5fecef367b45f068ec35e635798dca53275a17..85e450e3241cb1d5f6281ee9e417f7e8e4301da1 100644 (file)
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -245,7 +245,13 @@ static void drm_gem_dmabuf_kunmap(struct dma_buf *dma_buf,
 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 =  {