netdev - Re: [PATCH] smsc911x: timeout reaches -1

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Message-Id: <20090129.173009.230013997.davem@davemloft.net>
Date:	Thu, 29 Jan 2009 17:30:09 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	Steve.Glendinning@...c.com
Cc:	roel.kluin@...il.com, netdev@...r.kernel.org, Ian.Saturley@...c.com
Subject: Re: [PATCH] smsc911x: timeout reaches -1

From: Steve.Glendinning@...c.com
Date: Thu, 29 Jan 2009 15:22:03 +0000

> Roel Kluin <roel.kluin@...il.com> wrote on 29/01/2009 15:12:03:
> 
> > With a postfix decrement the timeout will reach -1 rather than 0,
> > so the warning will not be issued.
> > 
> > Signed-off-by: Roel Kluin <roel.kluin@...il.com>
> > ---
> > diff --git a/drivers/net/smsc911x.c b/drivers/net/smsc911x.c
> > index f513bdf..783c1a7 100644
> > --- a/drivers/net/smsc911x.c
> > +++ b/drivers/net/smsc911x.c
> > @@ -953,7 +953,7 @@ smsc911x_rx_fastforward(struct smsc911x_data 
> > *pdata, unsigned int pktbytes)
> >        do {
> >           udelay(1);
> >           val = smsc911x_reg_read(pdata, RX_DP_CTRL);
> > -      } while (timeout-- && (val & RX_DP_CTRL_RX_FFWD_));
> > +      } while (--timeout && (val & RX_DP_CTRL_RX_FFWD_));
> > 
> >        if (unlikely(timeout == 0))
> >           SMSC_WARNING(HW, "Timed out waiting for "
> 
> Thanks for spotting this Roel.
> 
> Acked-by: Steve Glendinning <steve.glendinning@...c.com>

Applied, thanks everyone.
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