linux-kernel - Re: [PATCH v2 18/24] mlxbf-tmfifo: sparse tags for config access

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Message-ID: <20200805092904-mutt-send-email-mst@kernel.org>
Date:   Wed, 5 Aug 2020 09:29:12 -0400
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     Cornelia Huck <cohuck@...hat.com>
Cc:     linux-kernel@...r.kernel.org,
        Vadim Pasternak <vadimp@...lanox.com>,
        platform-driver-x86@...r.kernel.org,
        Darren Hart <dvhart@...radead.org>,
        virtualization@...ts.linux-foundation.org,
        Andy Shevchenko <andy@...radead.org>
Subject: Re: [PATCH v2 18/24] mlxbf-tmfifo: sparse tags for config access

On Tue, Aug 04, 2020 at 04:56:34PM +0200, Cornelia Huck wrote:
> On Mon, 3 Aug 2020 17:00:01 -0400
> "Michael S. Tsirkin" <mst@...hat.com> wrote:
> 
> > mlxbf-tmfifo accesses config space using native types -
> > which works for it since the legacy virtio native types.
> > 
> > This will break if it ever needs to support modern virtio,
> > so with new tags previously introduced for virtio net config,
> > sparse now warns for this in drivers.
> > 
> > Since this is a legacy only device, fix it up using
> > virtio_legacy_is_little_endian for now.
> 
> I'm wondering if the driver should make this more explicit?


Not sure how though.

> No issues with the patch, though.
> 
> > 
> > No functional changes.
> > 
> > Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
> > ---
> >  drivers/platform/mellanox/mlxbf-tmfifo.c | 13 ++++++++++---
> >  1 file changed, 10 insertions(+), 3 deletions(-)
> 
> Acked-by: Cornelia Huck <cohuck@...hat.com>