i915: add stub dma-buf mmap callback.

This just adds a stub for now, until we have some users in
place to test this functionality properly.

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

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
index 8e269178d6a..4fba63e896d 100644
--- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
@@ -93,6 +93,11 @@ static void i915_gem_dmabuf_kunmap(struct dma_buf *dma_buf, unsigned long page_n
 
 }
 
+static int i915_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma)
+{
+        return -EINVAL;
+}
+
 static const struct dma_buf_ops i915_dmabuf_ops =  {
         .map_dma_buf = i915_gem_map_dma_buf,
         .unmap_dma_buf = i915_gem_unmap_dma_buf,
@@ -101,6 +106,7 @@ static const struct dma_buf_ops i915_dmabuf_ops =  {
         .kmap_atomic = i915_gem_dmabuf_kmap_atomic,
         .kunmap = i915_gem_dmabuf_kunmap,
         .kunmap_atomic = i915_gem_dmabuf_kunmap_atomic,
+        .mmap = i915_gem_dmabuf_mmap,
 };
 
 struct dma_buf *i915_gem_prime_export(struct drm_device *dev,