linux-kernel - Re: [PATCH 06/18] software_node: amend software_node_unregister_node_group() to perform unregistration of array in reverse order to be consistent with software_node_unregister

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Date:   Mon, 30 Nov 2020 18:17:16 +0200
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Daniel Scally <djrscally@...il.com>
Cc:     linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-i2c@...r.kernel.org,
        linux-media@...r.kernel.org, devel@...ica.org, rjw@...ysocki.net,
        lenb@...nel.org, gregkh@...uxfoundation.org,
        mika.westerberg@...ux.intel.com, andriy.shevchenko@...ux.intel.com,
        linus.walleij@...aro.org, bgolaszewski@...libre.com,
        wsa@...nel.org, yong.zhi@...el.com, sakari.ailus@...ux.intel.com,
        bingbu.cao@...el.com, tian.shu.qiu@...el.com, mchehab@...nel.org,
        robert.moore@...el.com, erik.kaneda@...el.com, pmladek@...e.com,
        rostedt@...dmis.org, sergey.senozhatsky@...il.com,
        linux@...musvillemoes.dk, kieran.bingham+renesas@...asonboard.com,
        jacopo+renesas@...ndi.org,
        laurent.pinchart+renesas@...asonboard.com,
        jorhand@...ux.microsoft.com, kitakar@...il.com,
        heikki.krogerus@...ux.intel.com
Subject: Re: [PATCH 06/18] software_node: amend
 software_node_unregister_node_group() to perform unregistration of array in
 reverse order to be consistent with software_node_unregister_nodes()

Hi Daniel,

Thank you for the patch.

The subject line is very long. We try to keep it within a 72 characters
limit in the kernel. That can be a challenge sometimes, and expections
can be accepted, but this one is reaaaally long.

(The same comment holds for other patches in the series)

On Mon, Nov 30, 2020 at 01:31:17PM +0000, Daniel Scally wrote:
> To maintain consistency with software_node_unregister_nodes(), reverse
> the order in which the software_node_unregister_node_group() function
> unregisters nodes.
> 
> Suggested-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> Signed-off-by: Daniel Scally <djrscally@...il.com>

I"d squash this with the previous patch to avoid introducing an
inconsistency.

Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>

> ---
> Changes since v3:
> 
> 	Patch introduced
> 
>  drivers/base/swnode.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/base/swnode.c b/drivers/base/swnode.c
> index d39e1c76d98d..9bd0bb77ad5b 100644
> --- a/drivers/base/swnode.c
> +++ b/drivers/base/swnode.c
> @@ -782,7 +782,10 @@ void software_node_unregister_node_group(const struct software_node **node_group
>  	if (!node_group)
>  		return;
>  
> -	for (i = 0; node_group[i]; i++)
> +	while (node_group[i]->name)
> +		i++;
> +
> +	while (i--)
>  		software_node_unregister(node_group[i]);
>  }
>  EXPORT_SYMBOL_GPL(software_node_unregister_node_group);

-- 
Regards,

Laurent Pinchart