Some drivers leave these unimplemented, so don't make them have
unimplemented stubs.
Signed-off-by: Eric Anholt <e...@anholt.net>
---
drivers/gpu/drm/drm_prime.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index caf675e3e692..397b46b33739 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -409,7 +409,10 @@ void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf)
struct drm_gem_object *obj = dma_buf->priv;
struct drm_device *dev = obj->dev;
- return dev->driver->gem_prime_vmap(obj);
+ if (dev->driver->gem_prime_vmap)
+ return dev->driver->gem_prime_vmap(obj);
+ else
+ return NULL;
}
EXPORT_SYMBOL(drm_gem_dmabuf_vmap);
@@ -426,7 +429,8 @@ void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void
*vaddr)
struct drm_gem_object *obj = dma_buf->priv;
struct drm_device *dev = obj->dev;
- dev->driver->gem_prime_vunmap(obj, vaddr);
+ if (dev->driver->gem_prime_vunmap)
+ dev->driver->gem_prime_vunmap(obj, vaddr);
}
EXPORT_SYMBOL(drm_gem_dmabuf_vunmap);
--
2.17.0
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