linux-kernel - Re: [PATCH v2 3/9] thunderbolt: Populate PG field in hot plug acknowledgment packet

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Message-ID: <20191217145632.GM2913417@lahna.fi.intel.com>
Date:   Tue, 17 Dec 2019 16:56:32 +0200
From:   Mika Westerberg <mika.westerberg@...ux.intel.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-usb@...r.kernel.org,
        Andreas Noever <andreas.noever@...il.com>,
        Michael Jamet <michael.jamet@...el.com>,
        Yehezkel Bernat <YehezkelShB@...il.com>,
        Rajmohan Mani <rajmohan.mani@...el.com>,
        Nicholas Johnson <nicholas.johnson-opensource@...look.com.au>,
        Lukas Wunner <lukas@...ner.de>,
        Alan Stern <stern@...land.harvard.edu>,
        Mario.Limonciello@...l.com,
        Anthony Wong <anthony.wong@...onical.com>,
        Oliver Neukum <oneukum@...e.com>,
        Christian Kellner <ckellner@...hat.com>,
        "David S . Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/9] thunderbolt: Populate PG field in hot plug
 acknowledgment packet

On Tue, Dec 17, 2019 at 01:47:45PM +0100, Greg Kroah-Hartman wrote:
> On Tue, Dec 17, 2019 at 03:33:39PM +0300, Mika Westerberg wrote:
> > USB4 1.0 section 6.4.2.7 specifies a new field (PG) in notification
> > packet that is sent as response of hot plug/unplug events. This field
> > tells whether the acknowledgment is for plug or unplug event. This needs
> > to be set accordingly in order the router to send further hot plug
> > notifications.
> > 
> > To make it simpler we fill the field unconditionally. Legacy devices do
> > not look at this field so there should be no problems with them.
> > 
> > While there rename tb_cfg_error() to tb_cfg_ack_plug() and update the
> > log message accordingly. The function is only used to ack plug/unplug
> > events.
> > 
> > Signed-off-by: Mika Westerberg <mika.westerberg@...ux.intel.com>
> 
> First 3 patches look "trivial" enough for me to take right now, any
> objection to that?

No objections from my side :)

> Should I be using my usb tree for this?

Yes, I think it makes sense now that this is also under USB IF umbrella.