netdev - Re: [PATCH v1] net/core: support runtime PM on net

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Date:	Thu, 18 Oct 2012 10:29:17 +0200
From:	Bjørn Mork <bjorn@...k.no>
To:	Ming Lei <ming.lei@...onical.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	"Rafael J. Wysocki" <rjw@...k.pl>, Oliver Neukum <oneukum@...e.de>,
	Alan Stern <stern@...land.harvard.edu>, netdev@...r.kernel.org,
	linux-pm@...r.kernel.org
Subject: Re: [PATCH v1] net/core: support runtime PM on net_device

Ming Lei <ming.lei@...onical.com> writes:

> In ioctl path on net_device, the physical deivce is often
> touched, but the physical device may have been put into runtime
> suspend state already, so cause some utilitis(ifconfig, ethtool,
> ...) to return failure in this situation.

I have to as the stupid questions again, sorry...

Just wondering, isn't that really a driver problem?  The driver will
know whether or not hardware access is required, and should wake up the
device if necessary.  Unless I misunderstand something here, this seems
like papering over driver bugs?


Bjørn
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