linux-kernel - Re: [PATCH v1 14/16] soundwire: Use acpi_dev_for_each

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Date:   Thu, 9 Jun 2022 11:21:32 -0500
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>
Cc:     "moderated list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEM..." 
        <alsa-devel@...a-project.org>, Linux PM <linux-pm@...r.kernel.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux ACPI <linux-acpi@...r.kernel.org>,
        Vinod Koul <vkoul@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Sanyog Kale <sanyog.r.kale@...el.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Bard Liao <yung-chuan.liao@...ux.intel.com>
Subject: Re: [PATCH v1 14/16] soundwire: Use acpi_dev_for_each_child()


>> Shouldn't the return of sdw_acpi_find_one() be trapped, e.g. with
>>
>> return acpi_dev_for_each_child(parent, sdw_acpi_find_one, bus);
> 
> Sure, I'll do that.  Thanks!

I also added this EXPORT_SYMBOL to work-around link errors, not sure if
this is in your tree already?

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c

index 86fa61a21826c..ade6259c19af6 100644

--- a/drivers/acpi/bus.c

+++ b/drivers/acpi/bus.c

@@ -1113,6 +1113,7 @@ int acpi_dev_for_each_child(struct acpi_device *adev,



        return device_for_each_child(&adev->dev, &adwc,
acpi_dev_for_one_check);

 }

+EXPORT_SYMBOL_GPL(acpi_dev_for_each_child);