From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [PATCH v7 36/46] vhost/net: suppress compiler warning
Date: Mon, 1 Dec 2014 17:12:08 +0200
Message-ID: <20141201151208.GA18919@redhat.com>
References: <1417359787-10138-1-git-send-email-mst@redhat.com>
	<1417359787-10138-37-git-send-email-mst@redhat.com>
	<20141201133740.56d7d6d8.cornelia.huck@de.ibm.com>
	<20141201134839.GB18305@redhat.com>
	<20141201152103.0f375544.cornelia.huck@de.ibm.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <virtualization-bounces@lists.linux-foundation.org>
Content-Disposition: inline
In-Reply-To: <20141201152103.0f375544.cornelia.huck@de.ibm.com>
List-Unsubscribe: <https://lists.linuxfoundation.org/mailman/options/virtualization>,
	<mailto:virtualization-request@lists.linux-foundation.org?subject=unsubscribe>
List-Archive: <http://lists.linuxfoundation.org/pipermail/virtualization/>
List-Post: <mailto:virtualization@lists.linux-foundation.org>
List-Help: <mailto:virtualization-request@lists.linux-foundation.org?subject=help>
List-Subscribe: <https://lists.linuxfoundation.org/mailman/listinfo/virtualization>,
	<mailto:virtualization-request@lists.linux-foundation.org?subject=subscribe>
Sender: virtualization-bounces@lists.linux-foundation.org
Errors-To: virtualization-bounces@lists.linux-foundation.org
To: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: thuth@linux.vnet.ibm.com, kvm@vger.kernel.org, rusty@au1.ibm.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, dahi@linux.vnet.ibm.com, pbonzini@redhat.com, David Miller <davem@davemloft.net>
List-Id: virtualization@lists.linuxfoundation.org

On Mon, Dec 01, 2014 at 03:21:03PM +0100, Cornelia Huck wrote:
> On Mon, 1 Dec 2014 15:48:39 +0200
> "Michael S. Tsirkin" <mst@redhat.com> wrote:
> 
> > On Mon, Dec 01, 2014 at 01:37:40PM +0100, Cornelia Huck wrote:
> > > On Sun, 30 Nov 2014 17:12:13 +0200
> > > "Michael S. Tsirkin" <mst@redhat.com> wrote:
> > > 
> > > > len is always initialized since function is called with size > 0.
> > > > 
> > > > Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
> > > > ---
> > > >  drivers/vhost/net.c | 2 +-
> > > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > > 
> > > > diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
> > > > index 984242e..54ffbb0 100644
> > > > --- a/drivers/vhost/net.c
> > > > +++ b/drivers/vhost/net.c
> > > > @@ -501,7 +501,7 @@ static int get_rx_bufs(struct vhost_virtqueue *vq,
> > > >  	int headcount = 0;
> > > >  	unsigned d;
> > > >  	int r, nlogs = 0;
> > > > -	u32 len;
> > > > +	u32 uninitialized_var(len);
> > > > 
> > > >  	while (datalen > 0 && headcount < quota) {
> > > >  		if (unlikely(seg >= UIO_MAXIOV)) {
> > > 
> > > Want to merge this with the patch introducing the variable and add a
> > > comment there?
> > 
> > Not really. Warnings in bisect are fine  I think.
> 
> I'm not sure what a separate patch buys us, though, as it should be
> trivial to merge.

Easier to document the reason if it's split out.