netdev - Re: [PATCH] phy: SMSC: fix unused warnings when built into kernel

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Date:	Fri, 6 Aug 2010 03:37:01 -0400
From:	Mike Frysinger <vapier@...too.org>
To:	Changli Gao <xiaosuo@...il.com>
Cc:	netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH] phy: SMSC: fix unused warnings when built into kernel

On Friday, August 06, 2010 02:43:46 Changli Gao wrote:
> On Fri, Aug 6, 2010 at 2:27 PM, Mike Frysinger <vapier@...too.org> wrote:
> > If the SMSC phy is not built as a module, we get the warning:
> >        drivers/net/phy/smsc.c:257: warning: 'smsc_tbl' defined but not
> > used
> > 
> > So mark the structure as maybe unused to avoid this.
> > 
> > Signed-off-by: Mike Frysinger <vapier@...too.org>
> > ---
> >  drivers/net/phy/smsc.c |    2 +-
> >  1 files changed, 1 insertions(+), 1 deletions(-)
> > 
> > diff --git a/drivers/net/phy/smsc.c b/drivers/net/phy/smsc.c
> > index 78fa988..11944ef 100644
> > --- a/drivers/net/phy/smsc.c
> > +++ b/drivers/net/phy/smsc.c
> > @@ -254,7 +254,7 @@ MODULE_LICENSE("GPL");
> >  module_init(smsc_init);
> >  module_exit(smsc_exit);
> > 
> > -static struct mdio_device_id smsc_tbl[] = {
> > +static __maybe_unused struct mdio_device_id smsc_tbl[] = {
> >        { 0x0007c0a0, 0xfffffff0 },
> >        { 0x0007c0b0, 0xfffffff0 },
> >        { 0x0007c0c0, 0xfffffff0 },
> 
> How about adding a #ifdef CONFIG_SMSC_PHY_MODULE clause  around these
> lines?

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