If LIBCRC32C and DMA_VIRT_OPS are not enabled: drivers/infiniband/sw/siw/siw_main.o: In function `siw_newlink': siw_main.c:(.text+0x35c): undefined reference to `dma_virt_ops' drivers/infiniband/sw/siw/siw_qp_rx.o: In function `siw_csum_update': siw_qp_rx.c:(.text+0x16): undefined reference to `crc32c' Fix the first issue by adding a select of DMA_VIRT_OPS. Fix the second issue by replacing the unneeded dependency on CRYPTO_CRC32 by a dependency on LIBCRC32C. Reported-by: noreply@xxxxxxxxxxxxxx (first issue) Fixes: c0cf5bdde46c664d ("rdma/siw: addition to kernel build environment") Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> --- drivers/infiniband/sw/siw/Kconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/sw/siw/Kconfig b/drivers/infiniband/sw/siw/Kconfig index 94f684174ce3556e..b622fc62f2cd6d46 100644 --- a/drivers/infiniband/sw/siw/Kconfig +++ b/drivers/infiniband/sw/siw/Kconfig @@ -1,6 +1,7 @@ config RDMA_SIW tristate "Software RDMA over TCP/IP (iWARP) driver" - depends on INET && INFINIBAND && CRYPTO_CRC32 + depends on INET && INFINIBAND && LIBCRC32C + select DMA_VIRT_OPS help This driver implements the iWARP RDMA transport over the Linux TCP/IP network stack. It enables a system with a -- 2.17.1