linux-kernel - Re: [PATCH] at91_ether: use gpio_is

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Message-ID: <20111125134708.GM15531@game.jcrosoft.org>
Date:	Fri, 25 Nov 2011 14:47:08 +0100
From:	Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>
To:	Jamie Iles <jamie@...ieiles.com>
Cc:	Nicolas Ferre <nicolas.ferre@...el.com>, netdev@...r.kernel.org,
	sfr@...b.auug.org.au, linux-next@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] at91_ether: use gpio_is_valid for phy IRQ line

On 22:28 Thu 24 Nov     , Jamie Iles wrote:
> Hi Nicolas,
> 
> On Thu, Nov 24, 2011 at 10:21:14PM +0100, Nicolas Ferre wrote:
> > Use the generic gpiolib gpio_is_valid() function to test
> > if the phy IRQ line GPIO is actually provided.
> > 
> > For non-connected or non-existing phy IRQ lines, -EINVAL
> > value is used for phy_irq_pin field of struct at91_eth_data.
> > 
> > Signed-off-by: Nicolas Ferre <nicolas.ferre@...el.com>
> > ---
> >  drivers/net/ethernet/cadence/at91_ether.c |   23 +++++++++++++----------
> >  1 files changed, 13 insertions(+), 10 deletions(-)
> > 
> > diff --git a/drivers/net/ethernet/cadence/at91_ether.c b/drivers/net/ethernet/cadence/at91_ether.c
> > index 56624d3..a1c4143 100644
> > --- a/drivers/net/ethernet/cadence/at91_ether.c
> > +++ b/drivers/net/ethernet/cadence/at91_ether.c
> > @@ -255,8 +255,7 @@ static void enable_phyirq(struct net_device *dev)
> >  	unsigned int dsintr, irq_number;
> >  	int status;
> >  
> > -	irq_number = lp->board_data.phy_irq_pin;
> > -	if (!irq_number) {
> > +	if (!gpio_is_valid(lp->board_data.phy_irq_pin)) {
> >  		/*
> >  		 * PHY doesn't have an IRQ pin (RTL8201, DP83847, AC101L),
> >  		 * or board does not have it connected.
> > @@ -265,6 +264,7 @@ static void enable_phyirq(struct net_device *dev)
> >  		return;
> >  	}
> >  
> > +	irq_number = lp->board_data.phy_irq_pin;
> 
> Does this need to be:
> 
> 	irq_number = gpio_to_irq(lp->board_data.phy_irq_pin);
> 
> and the same for the other occurrences?  Otherwise this looks like the 
> right thing to me.
yes

Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>

Best Regards,
J.
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