linux-kernel - Re: [PATCH] drivers: Adjust scope for CONFIG_HAS_IOMEM before devm_platform_ioremap

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Date:   Mon, 24 Jun 2019 12:51:06 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     Bartosz Golaszewski <bgolaszewski@...libre.com>,
        kernel-janitors@...r.kernel.org
Cc:     Bartosz Golaszewski <brgl@...ev.pl>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Keerthy <j-keerthy@...com>,
        Linus Walleij <linus.walleij@...aro.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        linux-gpio <linux-gpio@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Enrico Weigelt <lkml@...ux.net>
Subject: Re: [PATCH] drivers: Adjust scope for CONFIG_HAS_IOMEM before
 devm_platform_ioremap_resource()

>> +++ b/drivers/base/platform.c
>> @@ -78,6 +78,7 @@ struct resource *platform_get_resource(struct platform_device *dev,
>>         return NULL;
>>  }
>>  EXPORT_SYMBOL_GPL(platform_get_resource);
>> +#ifdef CONFIG_HAS_IOMEM
>>
>>  /**
>>   * devm_platform_ioremap_resource - call devm_ioremap_resource() for a platform
>> @@ -87,7 +88,6 @@ EXPORT_SYMBOL_GPL(platform_get_resource);
>>   *        resource management
>>   * @index: resource index
>>   */
>> -#ifdef CONFIG_HAS_IOMEM
>>  void __iomem *devm_platform_ioremap_resource(struct platform_device *pdev,
>>                                              unsigned int index)
>>  {
…
> And what is the purpose of that?

I recommend to let the availability of additional documentation for this function
depend also on the mentioned preprocessor symbol

Regards,
Markus