Re: [alsa-devel] [PATCH -next] soundwire: Fix -Wunused-function warning

[Ladislav Michl <ladis@linux-mips.org>]

On Fri, Aug 16, 2019 at 10:14:09PM +0800, YueHaibing wrote:
> If CONFIG_ACPI is not set, gcc warning this:
> 
> drivers/soundwire/slave.c:16:12: warning:
>  'sdw_slave_add' defined but not used [-Wunused-function]
> 
> move them to #ifdef CONFIG_ACPI block.

...and that makes slave.c empty, right? So it boils down to
obj-$(CONFIG_ACPI) += slave.o

> Reported-by: Hulk Robot <hulkci@huawei.com>
> Signed-off-by: YueHaibing <yuehaibing@huawei.com>
> ---
>  drivers/soundwire/slave.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/soundwire/slave.c b/drivers/soundwire/slave.c
> index f39a581..34c7e65 100644
> --- a/drivers/soundwire/slave.c
> +++ b/drivers/soundwire/slave.c
> @@ -6,6 +6,7 @@
>  #include <linux/soundwire/sdw_type.h>
>  #include "bus.h"
>  
> +#if IS_ENABLED(CONFIG_ACPI)
>  static void sdw_slave_release(struct device *dev)
>  {
>  	struct sdw_slave *slave = dev_to_sdw_dev(dev);
> @@ -60,7 +61,6 @@ static int sdw_slave_add(struct sdw_bus *bus,
>  	return ret;
>  }
>  
> -#if IS_ENABLED(CONFIG_ACPI)
>  /*
>   * sdw_acpi_find_slaves() - Find Slave devices in Master ACPI node
>   * @bus: SDW bus instance
> -- 
> 2.7.4
> 
> 
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