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commit03a6c3ff32upstream. bfa_swap_words() shifts its argument (assumed to be 64-bit) by 32 bits each way. In two places the argument type is dma_addr_t, which may be 32-bit, in which case the effect of the bit shift is undefined: drivers/scsi/bfa/bfa_fcpim.c: In function 'bfa_ioim_send_ioreq': drivers/scsi/bfa/bfa_fcpim.c:2497:4: warning: left shift count >= width of type [enabled by default] addr = bfa_sgaddr_le(sg_dma_address(sg)); ^ drivers/scsi/bfa/bfa_fcpim.c:2497:4: warning: right shift count >= width of type [enabled by default] drivers/scsi/bfa/bfa_fcpim.c:2509:4: warning: left shift count >= width of type [enabled by default] addr = bfa_sgaddr_le(sg_dma_address(sg)); ^ drivers/scsi/bfa/bfa_fcpim.c:2509:4: warning: right shift count >= width of type [enabled by default] Avoid this by adding casts to u64 in bfa_swap_words(). Compile-tested only. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Acked-by: Anil Gurumurthy <anil.gurumurthy@qlogic.com> Fixes:f16a17507b('[SCSI] bfa: remove all OS wrappers') Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>