linux-kernel - Re: [PATCH 09/28] thunderbolt: Cache adapter specific capability offset into struct port

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Date:   Thu, 31 Jan 2019 11:37:27 +0200
From:   Mika Westerberg <mika.westerberg@...ux.intel.com>
To:     Lukas Wunner <lukas@...ner.de>
Cc:     linux-kernel@...r.kernel.org,
        Michael Jamet <michael.jamet@...el.com>,
        Yehezkel Bernat <YehezkelShB@...il.com>,
        Andreas Noever <andreas.noever@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        netdev@...r.kernel.org
Subject: Re: [PATCH 09/28] thunderbolt: Cache adapter specific capability
 offset into struct port

On Thu, Jan 31, 2019 at 10:23:09AM +0100, Lukas Wunner wrote:
> On Tue, Jan 29, 2019 at 06:01:24PM +0300, Mika Westerberg wrote:
> > --- a/drivers/thunderbolt/tb.h
> > +++ b/drivers/thunderbolt/tb.h
> > @@ -124,6 +124,8 @@ struct tb_switch {
> >   * @remote: Remote port (%NULL if not connected)
> >   * @xdomain: Remote host (%NULL if not connected)
> >   * @cap_phy: Offset, zero if not found
> > + * @cap_adap: Offset of the adapter specific capability. Negative if not
> > + *	      present.
> 
> Hm, could cap_adap be made zero in the non-presence case for consistency
> with cap_phy?

Sure.