netdev - Re: [PATCH] skge: Make sure both ports initialize correctly

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Date:	Wed, 30 Sep 2009 17:28:21 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	Mike McCormack <mikem@...g3k.org>
Cc:	Stephen Hemminger <shemminger@...ux-foundation.org>,
	netdev@...r.kernel.org
Subject: Re: [PATCH] skge: Make sure both ports initialize correctly

On Wed, 23 Sep 2009 22:50:36 +0900
Mike McCormack <mikem@...g3k.org> wrote:

> If allocation of the second ports fails, make sure that hw->ports
>  is not 2 otherwise we'll crash trying to access the second port.
> 
> This fix is copied from a similar fix in the sky2 driver (ca519274...),
> but is untested, as I don't have a skge card.
> 
> Signed-off-by: Mike McCormack <mikem@...g3k.org>
> ---
>  drivers/net/skge.c |    9 ++++++---
>  1 files changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/net/skge.c b/drivers/net/skge.c
> index 62e852e..21b816f 100644
> --- a/drivers/net/skge.c
> +++ b/drivers/net/skge.c
> @@ -3982,14 +3982,17 @@ static int __devinit skge_probe(struct pci_dev *pdev,
>  	}
>  	skge_show_addr(dev);
>  
> -	if (hw->ports > 1 && (dev1 = skge_devinit(hw, 1, using_dac))) {
> -		if (register_netdev(dev1) == 0)
> +	if (hw->ports > 1) {
> +		dev1 = skge_devinit(hw, 1, using_dac);
> +		if (dev1 && register_netdev(dev1) == 0)
>  			skge_show_addr(dev1);
>  		else {
>  			/* Failure to register second port need not be fatal */
>  			dev_warn(&pdev->dev, "register of second port failed\n");
>  			hw->dev[1] = NULL;
> -			free_netdev(dev1);
> +			hw->ports = 1;
> +			if (dev1)
> +				free_netdev(dev1);
>  		}
>  	}
>  	pci_set_drvdata(pdev, hw);

Looks good.
Acked-by: Stephen Hemminger <shemminger@...tta.com>
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