去掉warning:cast to pointer from integer of different size(从不同大小的整数转化为指针)

如果这样定义会出现如下warning提示:
(void*)virt_to_bus(yuv_frames)
warning: cast to pointer from integer of different size
如何去掉warning呢,
(void*)(long)virt_to_bus(yuv_frames)
这样warning就去掉了

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