[PATCH -next] soundwire: Fix -Wunused-function warning

[PATCH -next] soundwire: Fix -Wunused-function warning

[YueHaibing]

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.

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

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

[Ladislav Michl]

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
> 
> 
> _______________________________________________
> Alsa-devel mailing list
> Alsa-devel@alsa-project.org
> https://mailman.alsa-project.org/mailman/listinfo/alsa-devel

[PATCH v2 -next] soundwire: Fix -Wunused-function warning

[YueHaibing]

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]

Now all code in slave.c is only used on ACPI enabled,
so compiles it while CONFIG_ACPI is set.

Reported-by: Hulk Robot <hulkci@huawei.com>
Suggested-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
---
v2: use obj-$(CONFIG_ACPI) += slave.o
---
 drivers/soundwire/Makefile | 3 ++-
 drivers/soundwire/slave.c  | 3 ---
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/soundwire/Makefile b/drivers/soundwire/Makefile
index 45b7e50..a28bf3e 100644
--- a/drivers/soundwire/Makefile
+++ b/drivers/soundwire/Makefile
@@ -4,8 +4,9 @@
 #
 
 #Bus Objs
-soundwire-bus-objs := bus_type.o bus.o slave.o mipi_disco.o stream.o
+soundwire-bus-objs := bus_type.o bus.o mipi_disco.o stream.o
 obj-$(CONFIG_SOUNDWIRE) += soundwire-bus.o
+obj-$(CONFIG_ACPI) += slave.o
 
 #Cadence Objs
 soundwire-cadence-objs := cadence_master.o
diff --git a/drivers/soundwire/slave.c b/drivers/soundwire/slave.c
index f39a581..0dc188e 100644
--- a/drivers/soundwire/slave.c
+++ b/drivers/soundwire/slave.c
@@ -60,7 +60,6 @@ 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
@@ -110,5 +109,3 @@ int sdw_acpi_find_slaves(struct sdw_bus *bus)
 
 	return 0;
 }
-
-#endif
-- 
2.7.4

Re: [PATCH v2 -next] soundwire: Fix -Wunused-function warning

[Vinod Koul]

On 22-08-19, 22:54, 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]
> 
> Now all code in slave.c is only used on ACPI enabled,
> so compiles it while CONFIG_ACPI is set.

Sorry YueHaibing as I have said to other patch doing this, this slave.c
is acpi specific but Srini has already send DT support for this so it
doesn't become acpi only and this warn also goes away. We should get the
DT support soon

> 
> Reported-by: Hulk Robot <hulkci@huawei.com>
> Suggested-by: Ladislav Michl <ladis@linux-mips.org>
> Signed-off-by: YueHaibing <yuehaibing@huawei.com>
> ---
> v2: use obj-$(CONFIG_ACPI) += slave.o
> ---
>  drivers/soundwire/Makefile | 3 ++-
>  drivers/soundwire/slave.c  | 3 ---
>  2 files changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/soundwire/Makefile b/drivers/soundwire/Makefile
> index 45b7e50..a28bf3e 100644
> --- a/drivers/soundwire/Makefile
> +++ b/drivers/soundwire/Makefile
> @@ -4,8 +4,9 @@
>  #
>  
>  #Bus Objs
> -soundwire-bus-objs := bus_type.o bus.o slave.o mipi_disco.o stream.o
> +soundwire-bus-objs := bus_type.o bus.o mipi_disco.o stream.o
>  obj-$(CONFIG_SOUNDWIRE) += soundwire-bus.o
> +obj-$(CONFIG_ACPI) += slave.o
>  
>  #Cadence Objs
>  soundwire-cadence-objs := cadence_master.o
> diff --git a/drivers/soundwire/slave.c b/drivers/soundwire/slave.c
> index f39a581..0dc188e 100644
> --- a/drivers/soundwire/slave.c
> +++ b/drivers/soundwire/slave.c
> @@ -60,7 +60,6 @@ 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
> @@ -110,5 +109,3 @@ int sdw_acpi_find_slaves(struct sdw_bus *bus)
>  
>  	return 0;
>  }
> -
> -#endif
> -- 
> 2.7.4
> 

-- 
~Vinod

Re: [PATCH v2 -next] soundwire: Fix -Wunused-function warning

[Yuehaibing]

On 2019/8/23 14:44, Vinod Koul wrote:
> On 22-08-19, 22:54, 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]
>>
>> Now all code in slave.c is only used on ACPI enabled,
>> so compiles it while CONFIG_ACPI is set.
> 
> Sorry YueHaibing as I have said to other patch doing this, this slave.c
> is acpi specific but Srini has already send DT support for this so it
> doesn't become acpi only and this warn also goes away. We should get the
> DT support soon

Ok, thanks!

> 
>>
>> Reported-by: Hulk Robot <hulkci@huawei.com>
>> Suggested-by: Ladislav Michl <ladis@linux-mips.org>
>> Signed-off-by: YueHaibing <yuehaibing@huawei.com>
>> ---
>> v2: use obj-$(CONFIG_ACPI) += slave.o
>> ---
>>  drivers/soundwire/Makefile | 3 ++-
>>  drivers/soundwire/slave.c  | 3 ---
>>  2 files changed, 2 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/soundwire/Makefile b/drivers/soundwire/Makefile
>> index 45b7e50..a28bf3e 100644
>> --- a/drivers/soundwire/Makefile
>> +++ b/drivers/soundwire/Makefile
>> @@ -4,8 +4,9 @@
>>  #
>>  
>>  #Bus Objs
>> -soundwire-bus-objs := bus_type.o bus.o slave.o mipi_disco.o stream.o
>> +soundwire-bus-objs := bus_type.o bus.o mipi_disco.o stream.o
>>  obj-$(CONFIG_SOUNDWIRE) += soundwire-bus.o
>> +obj-$(CONFIG_ACPI) += slave.o
>>  
>>  #Cadence Objs
>>  soundwire-cadence-objs := cadence_master.o
>> diff --git a/drivers/soundwire/slave.c b/drivers/soundwire/slave.c
>> index f39a581..0dc188e 100644
>> --- a/drivers/soundwire/slave.c
>> +++ b/drivers/soundwire/slave.c
>> @@ -60,7 +60,6 @@ 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
>> @@ -110,5 +109,3 @@ int sdw_acpi_find_slaves(struct sdw_bus *bus)
>>  
>>  	return 0;
>>  }
>> -
>> -#endif
>> -- 
>> 2.7.4
>>
> 

Re: [PATCH v2 -next] soundwire: Fix -Wunused-function warning

[kbuild test robot]

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Hi YueHaibing,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on next-20190823]

url:    https://github.com/0day-ci/linux/commits/YueHaibing/soundwire-Fix-Wunused-function-warning/20190825-083159
config: x86_64-randconfig-g004-201934 (attached as .config)
compiler: gcc-7 (Debian 7.4.0-10) 7.4.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> ERROR: "sdw_acpi_find_slaves" [drivers/soundwire/soundwire-bus.ko] undefined!
   WARNING: "ftrace_set_clr_event" [vmlinux] is a static EXPORT_SYMBOL_GPL

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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