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Commit d34deab9 authored by Eric Anholt's avatar Eric Anholt
Browse files

drm: Make the prime vmap/vunmap hooks optional. 



Some drivers leave these unimplemented, so don't make them have
unimplemented stubs.

Signed-off-by: default avatarEric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20180424004610.4637-2-eric@anholt.net


Reviewed-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 9f99963a

drivers/gpu/drm/drm_prime.c

+6 −2
Original line number Diff line number Diff line
@@ -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;



	if (dev->driver->gem_prime_vmap)

		return dev->driver->gem_prime_vmap(obj);

	else

		return NULL;

}

EXPORT_SYMBOL(drm_gem_dmabuf_vmap);
@@ -426,6 +429,7 @@ 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;



	if (dev->driver->gem_prime_vunmap)

		dev->driver->gem_prime_vunmap(obj, vaddr);

}

EXPORT_SYMBOL(drm_gem_dmabuf_vunmap);