linux-kernel - Re: [PATCH v3 05/14] software_node: unregister software

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Date:   Thu, 24 Dec 2020 14:00:42 +0000
From:   Daniel Scally <djrscally@...il.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Linux Media Mailing List <linux-media@...r.kernel.org>,
        devel@...ica.org, "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Yong Zhi <yong.zhi@...el.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Bingbu Cao <bingbu.cao@...el.com>,
        Tian Shu Qiu <tian.shu.qiu@...el.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Robert Moore <robert.moore@...el.com>,
        Erik Kaneda <erik.kaneda@...el.com>,
        Petr Mladek <pmladek@...e.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
        Jacopo Mondi <jacopo+renesas@...ndi.org>,
        kieran.bingham+renesas@...asonboard.com,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
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        Steve Longerbeam <slongerbeam@...il.com>,
        "Krogerus, Heikki" <heikki.krogerus@...ux.intel.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        kernel test robot <lkp@...el.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>
Subject: Re: [PATCH v3 05/14] software_node: unregister software_nodes in
 reverse order

On 24/12/2020 12:13, Andy Shevchenko wrote:
> On Thu, Dec 24, 2020 at 3:12 AM Daniel Scally <djrscally@...il.com> wrote:
>>
>> To maintain consistency with software_node_unregister_nodes(), reverse
>> the order in which the software_node_unregister_node_group() function
>> unregisters nodes.
> 
> ...
> 
>> - * Unregister multiple software nodes at once.
>> + * Unregister multiple software nodes at once. The array will be unwound in
>> + * reverse order (i.e. last entry first) and thus if any member of the array
>> + * has its .parent member set then they should appear later in the array such
>> + * that they are unregistered first.
> 
> I'm, as being not a native speaker, a bit confused by this comment.
> The idea is that children are unregistered first. Can you try to make
> it more clear maybe?

Sure, how about:

The array will be unwound in reverse order (i.e. last entry first). If
any member of the array is a child of another member then the child must
appear later in the array than their parent, so that they are
unregistered first.

?