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linux/prefetch.h is never explicitly included in ena_com, although functions from it, such as prefetchw(), are used throughout ena_com. This is an inclusion bug, and we fix it here by explicitly including linux/prefetch.h. The bug was exposed when the driver was compiled for the xtensa architecture. Fixes:689b2bdaaa("net: ena: add functions for handling Low Latency Queues in ena_com") Fixes:8c590f9776("ena: Fix Kconfig dependency on X86") Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net>