From: "Wyborny, Carolyn" <redacted>
Date: Fri, 17 Jun 2011 08:50:11 -0700

I will add a fuller description of the feature in my updated patch.
I thought the feature was more well known. Quick description is that
it's a power saving feature that causes the adapter to coalesce its
DMA writes at low traffic times to save power on the platform by
reducing wakeups.  The parameter is intended as a simple u32 value,
not just an on or off, but also to allow a variety of configuration
by adapter vendors, with validation of the input on the driver side.
Since I left out the implementation in my patch, this wasn't clear.
I will also fix this in my next submission.

The value cannot have adapter specific meaning, you must define it
precisely and in a generic manner, such that the user can specify the
same setting across different card types.