RE: [PATCH 3/3] mptsas: add SMP passthrough support via bsg

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From: "Moore, Eric" <Eric.Moore@xxxxxxx>
Subject: RE: [PATCH 3/3] mptsas: add SMP passthrough support via bsg
Date: Tue, 24 Jul 2007 18:22:08 -0600

> > > I'm not sure what the intent of this else case.
> > 
> > This code is for an "invisible" SMP target in LSI SAS HBAs. There are
> > better ways to get the target's address, I think. Any suggestions?
> > 
> 
> I've never heard that we(as in LSI) are attaching invisable SMP targets
> to HBA's.  I've seen the Virtual SMP Port, but those are not hidden, the
> driver would report them to the transport layer, therefore rphy should
> be non-zero.   For instance a 12 phy expander would have 13 phys(with
> the last being the virtual phy).   I doubt we need to have this else
> case in the code, as it will be returning the sas_address to the first
> attached device(which may not always be an expander).    Are you
> executing the else path?

In the else path, I try to get the virtual phy's address. That is, I
try to do what sas_low_phy_scandir_select() in Doug's lsscsi tool
does.
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