linux-kernel - RE: [RFC PATCH 01/22] thunderbolt: Introduce tb_switch_is

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Date:   Tue, 1 Oct 2019 13:50:13 +0000
From:   <Mario.Limonciello@...l.com>
To:     <mika.westerberg@...ux.intel.com>
CC:     <gregkh@...uxfoundation.org>, <linux-usb@...r.kernel.org>,
        <andreas.noever@...il.com>, <michael.jamet@...el.com>,
        <YehezkelShB@...il.com>, <rajmohan.mani@...el.com>,
        <nicholas.johnson-opensource@...look.com.au>, <lukas@...ner.de>,
        <stern@...land.harvard.edu>, <anthony.wong@...onical.com>,
        <linux-kernel@...r.kernel.org>
Subject: RE: [RFC PATCH 01/22] thunderbolt: Introduce tb_switch_is_icm()

> -----Original Message-----
> From: Mika Westerberg <mika.westerberg@...ux.intel.com>
> Sent: Tuesday, October 1, 2019 8:48 AM
> To: Limonciello, Mario
> Cc: gregkh@...uxfoundation.org; linux-usb@...r.kernel.org;
> andreas.noever@...il.com; michael.jamet@...el.com; YehezkelShB@...il.com;
> rajmohan.mani@...el.com; nicholas.johnson-opensource@...look.com.au;
> lukas@...ner.de; stern@...land.harvard.edu; anthony.wong@...onical.com;
> linux-kernel@...r.kernel.org
> Subject: Re: [RFC PATCH 01/22] thunderbolt: Introduce tb_switch_is_icm()
> 
> 
> [EXTERNAL EMAIL]
> 
> On Tue, Oct 01, 2019 at 01:36:49PM +0000, Mario.Limonciello@...l.com wrote:
> > > -----Original Message-----
> > > From: Mika Westerberg <mika.westerberg@...ux.intel.com>
> > > Sent: Tuesday, October 1, 2019 7:47 AM
> > > To: Greg Kroah-Hartman
> > > Cc: linux-usb@...r.kernel.org; Andreas Noever; Michael Jamet; Yehezkel
> Bernat;
> > > Rajmohan Mani; Nicholas Johnson; Lukas Wunner; Alan Stern; Limonciello,
> Mario;
> > > Anthony Wong; linux-kernel@...r.kernel.org
> > > Subject: Re: [RFC PATCH 01/22] thunderbolt: Introduce tb_switch_is_icm()
> > >
> > >
> > > [EXTERNAL EMAIL]
> > >
> > > On Tue, Oct 01, 2019 at 02:10:05PM +0200, Greg Kroah-Hartman wrote:
> > > > On Tue, Oct 01, 2019 at 02:38:09PM +0300, Mika Westerberg wrote:
> > > > > We currently differentiate between SW CM and ICM by looking directly at
> > > >
> > > > You should spell out what "SW CM" and "ICM" means please :)
> > >
> > > Indeed, sorry about that. I will spell them out in next version.
> > >
> > > SW CM is Software Connection manager, essentially
> > > drivers/thunderbolt/tb.c.
> >
> > In some of the documentation I've seen non-internal connection manager
> referred to
> > as ECM, which I guess is an external connection manager?  To be consistent with
> various
> > documentations maybe that would be better than "SW CM".
> 
> That's the first time I hear about ECM ;-)
> 
> Here at Intel we use term "SW CM" and "FW CM" and IMHO they are better
> than ECM/ICM. But if people insist I can change them.

I do agree with you, SW CM and FW CM are clearer than ECM/ICM, maybe just reference
both in the comments so if someone is aware of ECM/ICM from some documents they
can relate the two concepts.