diff mbox

platform/chrome: cros_ec_lightbar - hide unused PM functions

Message ID 20170627153705.1378256-1-arnd@arndb.de
State Accepted
Commit 5d6a312e8f99f0a0bf793256c203fa17c97a15e1
Headers show

Commit Message

Arnd Bergmann June 27, 2017, 3:36 p.m. UTC
The only reference to the new functions is inside of an #ifdef,
which now causes a harmless warning when CONFIG_PM_SLEEP is not set:

chrome/cros_ec_dev.c:478:12: error: 'ec_device_resume' defined but not used [-Werror=unused-function]
chrome/cros_ec_dev.c:469:12: error: 'ec_device_suspend' defined but not used [-Werror=unused-function]

This marks the two functions as __maybe_unused so they can get
silently dropped by the compiler.

Fixes: 405c84308c43 ("platform/chrome: cros_ec_lightbar - Control of suspend/resume lightbar sequence")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

---
 drivers/platform/chrome/cros_ec_dev.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

-- 
2.9.0

Comments

Guenter Roeck June 27, 2017, 4:04 p.m. UTC | #1
On Tue, Jun 27, 2017 at 8:36 AM, Arnd Bergmann <arnd@arndb.de> wrote:
> The only reference to the new functions is inside of an #ifdef,

> which now causes a harmless warning when CONFIG_PM_SLEEP is not set:

>

> chrome/cros_ec_dev.c:478:12: error: 'ec_device_resume' defined but not used [-Werror=unused-function]

> chrome/cros_ec_dev.c:469:12: error: 'ec_device_suspend' defined but not used [-Werror=unused-function]

>

> This marks the two functions as __maybe_unused so they can get

> silently dropped by the compiler.

>

> Fixes: 405c84308c43 ("platform/chrome: cros_ec_lightbar - Control of suspend/resume lightbar sequence")

> Signed-off-by: Arnd Bergmann <arnd@arndb.de>


Reviewed-by: Guenter Roeck <groeck@chromium.org>


> ---

>  drivers/platform/chrome/cros_ec_dev.c | 4 ++--

>  1 file changed, 2 insertions(+), 2 deletions(-)

>

> diff --git a/drivers/platform/chrome/cros_ec_dev.c b/drivers/platform/chrome/cros_ec_dev.c

> index b9bf086f7569..cf6c4f0846b8 100644

> --- a/drivers/platform/chrome/cros_ec_dev.c

> +++ b/drivers/platform/chrome/cros_ec_dev.c

> @@ -466,7 +466,7 @@ static const struct platform_device_id cros_ec_id[] = {

>  };

>  MODULE_DEVICE_TABLE(platform, cros_ec_id);

>

> -static int ec_device_suspend(struct device *dev)

> +static __maybe_unused int ec_device_suspend(struct device *dev)

>  {

>         struct cros_ec_dev *ec = dev_get_drvdata(dev);

>

> @@ -475,7 +475,7 @@ static int ec_device_suspend(struct device *dev)

>         return 0;

>  }

>

> -static int ec_device_resume(struct device *dev)

> +static __maybe_unused int ec_device_resume(struct device *dev)

>  {

>         struct cros_ec_dev *ec = dev_get_drvdata(dev);

>

> --

> 2.9.0

>
Benson Leung June 27, 2017, 4:29 p.m. UTC | #2
Hi Arnd,

On Tue, Jun 27, 2017 at 05:36:36PM +0200, Arnd Bergmann wrote:
> The only reference to the new functions is inside of an #ifdef,

> which now causes a harmless warning when CONFIG_PM_SLEEP is not set:

> 

> chrome/cros_ec_dev.c:478:12: error: 'ec_device_resume' defined but not used [-Werror=unused-function]

> chrome/cros_ec_dev.c:469:12: error: 'ec_device_suspend' defined but not used [-Werror=unused-function]

> 

> This marks the two functions as __maybe_unused so they can get

> silently dropped by the compiler.

> 

> Fixes: 405c84308c43 ("platform/chrome: cros_ec_lightbar - Control of suspend/resume lightbar sequence")

> Signed-off-by: Arnd Bergmann <arnd@arndb.de>


Good catch. Applied. Thanks!
-- 
Benson Leung
Staff Software Engineer
Chrome OS Kernel
Google Inc.
bleung@google.com
Chromium OS Project
bleung@chromium.org
diff mbox

Patch

diff --git a/drivers/platform/chrome/cros_ec_dev.c b/drivers/platform/chrome/cros_ec_dev.c
index b9bf086f7569..cf6c4f0846b8 100644
--- a/drivers/platform/chrome/cros_ec_dev.c
+++ b/drivers/platform/chrome/cros_ec_dev.c
@@ -466,7 +466,7 @@  static const struct platform_device_id cros_ec_id[] = {
 };
 MODULE_DEVICE_TABLE(platform, cros_ec_id);
 
-static int ec_device_suspend(struct device *dev)
+static __maybe_unused int ec_device_suspend(struct device *dev)
 {
 	struct cros_ec_dev *ec = dev_get_drvdata(dev);
 
@@ -475,7 +475,7 @@  static int ec_device_suspend(struct device *dev)
 	return 0;
 }
 
-static int ec_device_resume(struct device *dev)
+static __maybe_unused int ec_device_resume(struct device *dev)
 {
 	struct cros_ec_dev *ec = dev_get_drvdata(dev);