linux-kernel - Re: [PATCH 2/2] RDMA: dma-mapping: Return an unsigned int from ib_dma_map_sg{,

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Message-ID: <CAMGffEmffkW0fHrjx84gQ6FnWuwriRUg=HSdwzU4W_sZLdiT7g@mail.gmail.com>
Date:   Mon, 29 Aug 2022 11:40:40 +0200
From:   Jinpu Wang <jinpu.wang@...os.com>
To:     Leon Romanovsky <leon@...nel.org>
Cc:     jgg@...pe.ca, linux-rdma@...r.kernel.org,
        Christoph Hellwig <hch@....de>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] RDMA: dma-mapping: Return an unsigned int from ib_dma_map_sg{,_attrs}

On Sun, Aug 28, 2022 at 1:09 PM Leon Romanovsky <leon@...nel.org> wrote:
>
> On Fri, Aug 26, 2022 at 11:56:15AM +0200, Jack Wang wrote:
> > Following 2a047e0662ae ("dma-mapping: return an unsigned int from dma_map_sg{,_attrs}")
> > change the return value of ib_dma_map_sg{,attrs} to unsigned int.
> >
> > Cc: Jason Gunthorpe <jgg@...pe.ca>
> > Cc: Leon Romanovsky <leon@...nel.org>
> > Cc: Christoph Hellwig <hch@....de>
> > Cc: linux-rdma@...r.kernel.org
> > Cc: linux-kernel@...r.kernel.org
> >
> > Signed-off-by: Jack Wang <jinpu.wang@...os.com>
> > ---
> >  drivers/infiniband/core/device.c | 2 +-
> >  include/rdma/ib_verbs.h          | 6 +++---
> >  2 files changed, 4 insertions(+), 4 deletions(-)
>
> You forgot to change ib_dma_map_sgtable_attrs() and various
> ib_dma_map_sg*() callers.
No, they are different.
ib_dma_map_sgtable_attrs and dma_map_sgtable return negative on errors.
>
> Thanks
Thanks!