netdev - Re: Dealing nicely with PM failure

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Message-ID: <20121215141456.GA1341@linux-rbgc.site>
Date:	Sat, 15 Dec 2012 22:14:56 +0800
From:	Dave Wiltshire <dunlucky1@...il.com>
To:	Oliver Neukum <oneukum@...e.de>
Cc:	Ming Lei <ming.lei@...onical.com>,
	Steve Glendinning <steve@...well.net>, netdev@...r.kernel.org
Subject: Re: Dealing nicely with PM failure

On Fri, Dec 14, 2012 at 03:56:26PM +0100, Oliver Neukum wrote:
> @@ -793,15 +794,15 @@ int usbnet_open (struct net_device *net)
>  	// delay posting reads until we're fully open
>  	tasklet_schedule (&dev->bh);
>  	if (info->manage_power) {
> -		retval = info->manage_power(dev, 1);
> -		if (retval < 0)
> -			goto done_manage_power_error;
> -		usb_autopm_put_interface(dev->intf);
> +		int r;
> +
> +		r = info->manage_power(dev, 1);
> +		if (r < 0)
> +			set_bit(EVENT_NO_RUNTIME_PM, &dev->flags);
> +		else
> +			usb_autopm_put_interface(dev->intf);
>  	}
>  	return retval;

Did you mean to change the return value in the successful case? This
used to return 0 on a successful call to info->manage_power(dev, 1).
This patch changes that - perhaps it's still the same (if retval is set
above).

Dave
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