radeon: add stub dma-buf mmap functionality

This just adds a stub until we have pieces in place to test
a correct one.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_prime.c b/drivers/gpu/drm/radeon/radeon_prime.c
index b8f835d8ecb4..37ff6bfb8c72 100644
--- a/drivers/gpu/drm/radeon/radeon_prime.c
+++ b/drivers/gpu/drm/radeon/radeon_prime.c
@@ -85,6 +85,11 @@ static void radeon_gem_kunmap(struct dma_buf *dma_buf, unsigned long page_num, v
 
 }
 
+static int radeon_gem_prime_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma)
+{
+        return -EINVAL;
+}
+
 const static struct dma_buf_ops radeon_dmabuf_ops =  {
         .map_dma_buf = radeon_gem_map_dma_buf,
         .unmap_dma_buf = radeon_gem_unmap_dma_buf,
@@ -93,6 +98,7 @@ const static struct dma_buf_ops radeon_dmabuf_ops =  {
         .kmap_atomic = radeon_gem_kmap_atomic,
         .kunmap = radeon_gem_kunmap,
         .kunmap_atomic = radeon_gem_kunmap_atomic,
+        .mmap = radeon_gem_prime_mmap,
 };
 
 static int radeon_prime_create(struct drm_device *dev,