linux-kernel - Re: [PATCH] RDMA/rxe: Fix an error handling path in rxe_bind

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Date:   Tue, 18 Jul 2023 07:20:48 +0800
From:   Zhu Yanjun <zyjzyj2000@...il.com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     Jason Gunthorpe <jgg@...pe.ca>, Leon Romanovsky <leon@...nel.org>,
        Bob Pearson <rpearsonhpe@...il.com>,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        linux-rdma@...r.kernel.org
Subject: Re: [PATCH] RDMA/rxe: Fix an error handling path in rxe_bind_mw()

On Tue, Jul 18, 2023 at 3:55 AM Christophe JAILLET
<christophe.jaillet@...adoo.fr> wrote:
>
> All errors go to the error handling path, except this one. Be consistent
> and also branch to it.
>
> Fixes: 02ed253770fb ("RDMA/rxe: Introduce rxe access supported flags")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> ---
> /!\ Speculative /!\
>
>    This patch is based on analysis of the surrounding code and should be
>    reviewed with care !
>
> /!\ Speculative /!\
> ---
>  drivers/infiniband/sw/rxe/rxe_mw.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/infiniband/sw/rxe/rxe_mw.c b/drivers/infiniband/sw/rxe/rxe_mw.c
> index d8a43d87de93..d9312b5c9d20 100644
> --- a/drivers/infiniband/sw/rxe/rxe_mw.c
> +++ b/drivers/infiniband/sw/rxe/rxe_mw.c
> @@ -199,7 +199,8 @@ int rxe_bind_mw(struct rxe_qp *qp, struct rxe_send_wqe *wqe)
>
>         if (access & ~RXE_ACCESS_SUPPORTED_MW) {
>                 rxe_err_mw(mw, "access %#x not supported", access);

https://www.kernel.org/doc/Documentation/core-api/printk-formats.rst
What is "%#x"? No such definition in the above link.
Except that, I am fine with it.

Acked-by: Zhu Yanjun <zyjzyj2000@...il.com>
Zhu Yanjun

> -               return -EOPNOTSUPP;
> +               ret = -EOPNOTSUPP;
> +               goto err_drop_mr;
>         }
>
>         spin_lock_bh(&mw->lock);
> --
> 2.34.1
>