Re: [PATCH 03/27] drivers/net: fix sparse warning: returning void-valued expression

From: Sam Ravnborg
Date: Sat Dec 27 2008 - 14:18:55 EST


On Sat, Dec 27, 2008 at 08:11:11PM +0100, Hannes Eder wrote:
> On 12/26/08, Randy Dunlap <rdunlap@xxxxxxxxxxxx> wrote:
> > On Thu, 25 Dec 2008 16:17:40 -0800 (PST)
> >
> > David Miller <davem@xxxxxxxxxxxxx> wrote:
> >
> >
> > > From: Hannes Eder <hannes@xxxxxxxxxxxxxx>
> > > Date: Mon, 22 Dec 2008 20:15:17 +0100
> > >
> > > > Fix this sparse warning:
> > > >
> > > > drivers/net/niu.c:8850:2: warning: returning void-valued expression
> > > >
> > > > Signed-off-by: Hannes Eder <hannes@xxxxxxxxxxxxxx>
> > >
> > > Can we just fix sparse not to generate this warning? It's
> > > marginal, at best. C++ even explicitly defines this as valid
> > > and last time I brought this up Linus even agreed.
> >
> >
> > Ack, I discussed it with him also and he thought that
> > they were just fine as they were...
> >
> >
> > > The types match, the function returns void and it is returning a void,
> > > what is the problem?
>
> In fact there is no need to _fix_ sparse, as there is a command line option
> -Wreturn-void / -Wno-return-void, so we could change the Makefile, see diff
> below.

It is default off but out use of "-Wall" turn it on.
So your patch is the right approach.

Can you please re-send it with a proper changelog and signed-off.

Sam
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