linux-kernel - Re: [PATCH 07/24] thunderbolt: Convert switch to a device

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Date:   Fri, 19 May 2017 11:20:50 +0300
From:   Mika Westerberg <mika.westerberg@...ux.intel.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andreas Noever <andreas.noever@...il.com>,
        Michael Jamet <michael.jamet@...el.com>,
        Yehezkel Bernat <yehezkel.bernat@...el.com>,
        Lukas Wunner <lukas@...ner.de>,
        Amir Levy <amir.jer.levy@...el.com>,
        Andy Lutomirski <luto@...nel.org>,
        Mario Limonciello <Mario.Limonciello@...l.com>,
        Jared.Dominguez@...l.com,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 07/24] thunderbolt: Convert switch to a device

On Thu, May 18, 2017 at 07:49:21PM +0300, Andy Shevchenko wrote:
> On Thu, May 18, 2017 at 5:38 PM, Mika Westerberg
> <mika.westerberg@...ux.intel.com> wrote:
> > Thunderbolt domain consists of switches that are connected to each
> > other, forming a bus. This will convert each switch into a real Linux
> > device structure and adds them to the domain. The advantage here is
> > that we get all the goodies from the driver core, like reference
> > counting and sysfs hierarchy for free.
> >
> > Also expose device identification information to the userspace via new
> > sysfs attributes.
> >
> > In order to support internal connection manager (ICM) we separate switch
> > configuration into its own function (tb_switch_configure()) which is
> > only called by the existing native connection manager implementation
> > used on Macs.
> >
> 
> Couple of nits below.
> 
> > +
> > +       return sw;
> > +err:
> 
> Perhaps
> err_free_sw_ports:
> ?

Works for me :)

> > +       kfree(sw->ports);
> > +       kfree(sw);
> > +       return NULL;
> > +}
> 
> > +       /* upload configuration */
> > +       ret = tb_sw_write(sw, 1 + (u32 *) &sw->config, TB_CFG_SWITCH, 1, 3);
> 
> Extra space before &.

This comes from the original code but I'll change it.

> > +       if (ret)
> > +               return ret;
> 
> -- 
> With Best Regards,
> Andy Shevchenko