linux-kernel - Re: [PATCH v1 12/16] platform/x86/thinkpad_acpi: Use acpi_dev_for_each

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Date:   Thu, 9 Jun 2022 18:48:22 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:     Linux ACPI <linux-acpi@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Henrique de Moraes Holschuh <hmh@....eng.br>,
        Mark Gross <markgross@...nel.org>,
        ibm-acpi-devel@...ts.sourceforge.net,
        platform-driver-x86@...r.kernel.org
Subject: Re: [PATCH v1 12/16] platform/x86/thinkpad_acpi: Use
 acpi_dev_for_each_child()

On Thu, Jun 09, 2022 at 04:09:45PM +0200, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> 
> Instead of walking the list of children of an ACPI device directly,
> use acpi_dev_for_each_child() to carry out an action for all of
> the given ACPI device's children.

...

> +	rc = acpi_dev_for_each_child(device, tpacpi_evaluate_bcl, NULL);
> +	if (rc > 0)
> +		return rc;
>  
> +	return 0;

It can be simply 'return acpi_dev_for_each_child();', no?

AFAICS the caller is prepared for negative returns.

-- 
With Best Regards,
Andy Shevchenko