No need for stubs, dma-buf.c takes care of that.
Aside, not having a ->release callback smelled like refcounting leak
somewhere. It will also score you a WARN_ON backtrace in dma-buf.c on
every export. But then I found that ttm_device_object_init overwrites
it. Overwriting const memory is not going to go down well in recent
kernels.
One more aside: The (un)map_dma_buf can't ever be called because
->attach rejects everything. Might want to drop a BUG_ON(1) in there.
Same for ->detach.
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
Cc: VMware Graphics <linux-graphics-maintainer@xxxxxxxxxx>
Cc: Thomas Hellstrom <thellstrom@xxxxxxxxxx>
---
drivers/gpu/drm/vmwgfx/vmwgfx_prime.c | 33 ---------------------------
1 file changed, 33 deletions(-)
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
index e420675e8db3..d9552a1efd13 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
@@ -62,45 +62,12 @@ static void vmw_prime_unmap_dma_buf(struct dma_buf_attachment *attach,
{
}
-static void *vmw_prime_dmabuf_vmap(struct dma_buf *dma_buf)
-{
- return NULL;
-}
-
-static void vmw_prime_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)
-{
-}
-
-static void *vmw_prime_dmabuf_kmap(struct dma_buf *dma_buf,
- unsigned long page_num)
-{
- return NULL;
-}
-
-static void vmw_prime_dmabuf_kunmap(struct dma_buf *dma_buf,
- unsigned long page_num, void *addr)
-{
-
-}
-
-static int vmw_prime_dmabuf_mmap(struct dma_buf *dma_buf,
- struct vm_area_struct *vma)
-{
- WARN_ONCE(true, "Attempted use of dmabuf mmap. Bad.\n");
- return -ENOSYS;
-}
-
const struct dma_buf_ops vmw_prime_dmabuf_ops = {
.attach = vmw_prime_map_attach,
.detach = vmw_prime_map_detach,
.map_dma_buf = vmw_prime_map_dma_buf,
.unmap_dma_buf = vmw_prime_unmap_dma_buf,
.release = NULL,
- .map = vmw_prime_dmabuf_kmap,
- .unmap = vmw_prime_dmabuf_kunmap,
- .mmap = vmw_prime_dmabuf_mmap,
- .vmap = vmw_prime_dmabuf_vmap,
- .vunmap = vmw_prime_dmabuf_vunmap,
};
int vmw_prime_fd_to_handle(struct drm_device *dev,
--
2.24.0
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