linux-kernel - RE: [PATCH 3/9] RapidIO: Add the ingress port number into the RIO switch data structure

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Date:	Mon, 16 Aug 2010 06:40:09 -0700
From:	"Bounine, Alexandre" <Alexandre.Bounine@....com>
To:	"Micha Nelissen" <micha@...i.hopto.org>
Cc:	<akpm@...ux-foundation.org>, <linux-kernel@...r.kernel.org>,
	<linuxppc-dev@...abs.org>
Subject: RE: [PATCH 3/9] RapidIO: Add the ingress port number into the RIO switch  data structure

Micha Nelissen wrote:
> 
> Alexandre Bounine wrote:
> > A switch ingress port number has to be saved for software assisted
error
> > recovery from the error-stopped state. Saving this information also
allows
> > to remove several register reads from the RIO enumeration process.
> 
> Why not keep using the swpinfo field, as you can extract it from
there?
> And your code actually does this.
> 
> Also processor devices can have multiple ports (not only switches), it
> would be good to be ready for that use case.
> 
Agree. I missed the Multiport bit introduced in RIO spec 2.1. Now it is
justified to be as it was before.
I will rework this and next patches. 
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