Re: [PATCH net-next] r8152: use mutex for hw settings

From: David Miller
Date: Wed Oct 08 2014 - 15:45:24 EST

From: Hayes Wang <hayeswang@xxxxxxxxxxx>
Date: Tue, 7 Oct 2014 13:36:30 +0800

> Use mutex to avoid that the serial hw settings would be interrupted
> by other settings. Although there is no problem now, it makes the
> driver more safe.
> Signed-off-by: Hayes Wang <hayeswang@xxxxxxxxxxx>

I think a much simpler fix is to take rtnl_lock() in the workqueue
function and suspend/resume ops.

Every other place you are adding the mutex already holds the RTNL
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