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The variable buf_addr is type dma_addr_t, which may not be the same size as a pointer. To ensure it is the correct size, cast to a uintptr_t. Fixes: c536277e0db1 ("RDMA/siw: Fix 64/32bit pointer inconsistency") Link: https://lore.kernel.org/r/20200610174717.15932-1-tseewald@gmail.com Signed-off-by: Tom Seewald <tseewald@gmail.com> Reviewed-by: Bernard Metzler <bmt@zurich.ibm.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>