Commit d34deab9 authored by Eric Anholt's avatar Eric Anholt

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