[PATCH] media: camss: mark PM functions as __maybe_unused

[PATCH] media: camss: mark PM functions as __maybe_unused

[Arnd Bergmann]

The empty suspend/resume functions cause a build warning
when they are unused:

drivers/media/platform/qcom/camss/camss.c:1001:12: error: 'camss_runtime_resume' defined but not used [-Werror=unused-function]
drivers/media/platform/qcom/camss/camss.c:996:12: error: 'camss_runtime_suspend' defined but not used [-Werror=unused-function]

Mark them as __maybe_unused so the compiler can silently drop them.

Fixes: 02afa816dbbf ("media: camss: Add basic runtime PM support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/media/platform/qcom/camss/camss.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c
index dcc0c30ef1b1..9f19d5f5966b 100644
--- a/drivers/media/platform/qcom/camss/camss.c
+++ b/drivers/media/platform/qcom/camss/camss.c
@@ -993,12 +993,12 @@ static const struct of_device_id camss_dt_match[] = {
 
 MODULE_DEVICE_TABLE(of, camss_dt_match);
 
-static int camss_runtime_suspend(struct device *dev)
+static int __maybe_unused camss_runtime_suspend(struct device *dev)
 {
 	return 0;
 }
 
-static int camss_runtime_resume(struct device *dev)
+static int __maybe_unused camss_runtime_resume(struct device *dev)
 {
 	return 0;
 }
-- 
2.18.0

Re: [PATCH] media: camss: mark PM functions as __maybe_unused

[Todor Tomov]

Thank you Arnd.

On 17.08.2018 12:53, Arnd Bergmann wrote:
> The empty suspend/resume functions cause a build warning
> when they are unused:
> 
> drivers/media/platform/qcom/camss/camss.c:1001:12: error: 'camss_runtime_resume' defined but not used [-Werror=unused-function]
> drivers/media/platform/qcom/camss/camss.c:996:12: error: 'camss_runtime_suspend' defined but not used [-Werror=unused-function]
> 
> Mark them as __maybe_unused so the compiler can silently drop them.
> 
> Fixes: 02afa816dbbf ("media: camss: Add basic runtime PM support")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Acked-by: Todor Tomov <todor.tomov@linaro.org>

> ---
>  drivers/media/platform/qcom/camss/camss.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c
> index dcc0c30ef1b1..9f19d5f5966b 100644
> --- a/drivers/media/platform/qcom/camss/camss.c
> +++ b/drivers/media/platform/qcom/camss/camss.c
> @@ -993,12 +993,12 @@ static const struct of_device_id camss_dt_match[] = {
>  
>  MODULE_DEVICE_TABLE(of, camss_dt_match);
>  
> -static int camss_runtime_suspend(struct device *dev)
> +static int __maybe_unused camss_runtime_suspend(struct device *dev)
>  {
>  	return 0;
>  }
>  
> -static int camss_runtime_resume(struct device *dev)
> +static int __maybe_unused camss_runtime_resume(struct device *dev)
>  {
>  	return 0;
>  }
> 

-- 
Best regards,
Todor Tomov

Re: [PATCH] media: camss: mark PM functions as __maybe_unused

[Geert Uytterhoeven]

On Fri, Aug 17, 2018 at 11:54 AM Arnd Bergmann <arnd@arndb.de> wrote:
> The empty suspend/resume functions cause a build warning
> when they are unused:
>
> drivers/media/platform/qcom/camss/camss.c:1001:12: error: 'camss_runtime_resume' defined but not used [-Werror=unused-function]
> drivers/media/platform/qcom/camss/camss.c:996:12: error: 'camss_runtime_suspend' defined but not used [-Werror=unused-function]
>
> Mark them as __maybe_unused so the compiler can silently drop them.
>
> Fixes: 02afa816dbbf ("media: camss: Add basic runtime PM support")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds