linux-kernel - Re: [PATCH] drivers: infiniband: sw: rxe: fix kconfig dependency on CRYPTO

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Date:   Sun, 21 Feb 2021 08:48:19 +0200
From:   Leon Romanovsky <leon@...nel.org>
To:     Julian Braha <julianbraha@...il.com>
Cc:     dledford@...hat.com, linux-rdma@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drivers: infiniband: sw: rxe: fix kconfig dependency on
 CRYPTO

On Fri, Feb 19, 2021 at 06:32:26PM -0500, Julian Braha wrote:
> commit 6e61907779ba99af785f5b2397a84077c289888a
> Author: Julian Braha <julianbraha@...il.com>
> Date:   Fri Feb 19 18:20:57 2021 -0500
>
>     drivers: infiniband: sw: rxe: fix kconfig dependency on CRYPTO
>
>     When RDMA_RXE is enabled and CRYPTO is disabled,
>     Kbuild gives the following warning:
>
>     WARNING: unmet direct dependencies detected for CRYPTO_CRC32
>       Depends on [n]: CRYPTO [=n]
>       Selected by [y]:
>       - RDMA_RXE [=y] && (INFINIBAND_USER_ACCESS [=y] || !INFINIBAND_USER_ACCESS [=y]) && INET [=y] && PCI [=y] && INFINIBAND [=y] && INFINIBAND_VIRT_DMA [=y]
>
>     This is because RDMA_RXE selects CRYPTO_CRC32,
>     without depending on or selecting CRYPTO, despite that config option
>     being subordinate to CRYPTO.
>
>     Signed-off-by: Julian Braha <julianbraha@...il.com>

Please use git sent-email to send patches and please fix crypto Kconfig
to enable CRYPTO if CRYPTO_* selected.

It is a little bit awkward to request all users of CRYPTO_* to request
select CRYPTO too.

Thanks

>
> diff --git a/drivers/infiniband/sw/rxe/Kconfig b/drivers/infiniband/sw/rxe/Kconfig
> index 452149066792..06b8dc5093f7 100644
> --- a/drivers/infiniband/sw/rxe/Kconfig
> +++ b/drivers/infiniband/sw/rxe/Kconfig
> @@ -4,6 +4,7 @@ config RDMA_RXE
>         depends on INET && PCI && INFINIBAND
>         depends on INFINIBAND_VIRT_DMA
>         select NET_UDP_TUNNEL
> +      select CRYPTO
>         select CRYPTO_CRC32
>         help
>         This driver implements the InfiniBand RDMA transport over
>
>
>