netdev - Re: [PATCH 01/12] usbnet: introduce usbnet 3 command helpers

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Date:	Wed, 10 Oct 2012 10:39:03 +0200
From:	Oliver Neukum <oneukum@...e.de>
To:	Ming Lei <ming.lei@...onical.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	netdev@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH 01/12] usbnet: introduce usbnet 3 command helpers

On Wednesday 10 October 2012 16:17:25 Ming Lei wrote:
> On Wed, Oct 10, 2012 at 1:51 PM, Oliver Neukum <oneukum@...e.de> wrote:

> > We need to use GFP_NOIO in situations the helper cannot know about.
> > Please add a gfp_t parameter. Then the caller will solve that.
> 
> Considered that most of drivers call the helpers in different context, I think
> it is better to switch the gpf_t flag runtime inside helpers, like below:
> 
>            if (dev->power.runtime_status == RPM_RESUMING)
>                    gfp = GFP_NOIO;
>           else
>                    gfp = GFP_KERNEL;

You are admirably persistent ;-)

If you extended the check to RPM_SUSPENDING it might work,
but still the problem with error handling exists.

	Regards
		Oliver

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