linux-kernel - Re: [PATCH 2/2] virtio_ring: fix complaint by sparse

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Date:   Tue, 22 Nov 2016 18:50:43 +0100
From:   Cornelia Huck <cornelia.huck@...ibm.com>
To:     Gonglei <arei.gonglei@...wei.com>
Cc:     <virtualization@...ts.linux-foundation.org>,
        <linux-kernel@...r.kernel.org>, mst@...hat.com
Subject: Re: [PATCH 2/2] virtio_ring: fix complaint by sparse

On Tue, 22 Nov 2016 13:51:50 +0800
Gonglei <arei.gonglei@...wei.com> wrote:

>  # make C=2 CF="-D__CHECK_ENDIAN__" ./drivers/virtio/
> 
> drivers/virtio/virtio_ring.c:423:19: warning: incorrect type in assignment (different base types)
> drivers/virtio/virtio_ring.c:423:19:    expected unsigned int [unsigned] [assigned] i
> drivers/virtio/virtio_ring.c:423:19:    got restricted __virtio16 [usertype] next
> drivers/virtio/virtio_ring.c:423:19: warning: incorrect type in assignment (different base types)
> drivers/virtio/virtio_ring.c:423:19:    expected unsigned int [unsigned] [assigned] i
> drivers/virtio/virtio_ring.c:423:19:    got restricted __virtio16 [usertype] next
> drivers/virtio/virtio_ring.c:423:19: warning: incorrect type in assignment (different base types)
> drivers/virtio/virtio_ring.c:423:19:    expected unsigned int [unsigned] [assigned] i
> drivers/virtio/virtio_ring.c:423:19:    got restricted __virtio16 [usertype] next
> drivers/virtio/virtio_ring.c:604:39: warning: incorrect type in initializer (different base types)
> drivers/virtio/virtio_ring.c:604:39:    expected unsigned short [unsigned] [usertype] nextflag
> drivers/virtio/virtio_ring.c:604:39:    got restricted __virtio16
> drivers/virtio/virtio_ring.c:612:33: warning: restricted __virtio16 degrades to integer
> 
> Signed-off-by: Gonglei <arei.gonglei@...wei.com>
> ---
>  drivers/virtio/virtio_ring.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Reviewed-by: Cornelia Huck <cornelia.huck@...ibm.com>