Re: [PATCH -next] clk: pm_clock: provide stubs for pm_clk_runtime_suspend/_resume

[Nathan Chancellor]

On Fri, Nov 06, 2020 at 10:05:44AM -0800, Randy Dunlap wrote:
> Add stubs for pm_clk_runtime_suspend() and pm_clk_runtime_resume()
> to fix build errors when CONFIG_PM and CONFIG_PM_CLK are not enabled.
> 
> Fixes these build errors:
> 
> ../drivers/clk/qcom/camcc-sc7180.c: In function ‘cam_cc_sc7180_probe’:
> ../drivers/clk/qcom/camcc-sc7180.c:1672:8: error: implicit declaration of function ‘pm_clk_runtime_resume’; did you mean ‘pm_runtime_resume’? [-Werror=implicit-function-declaration]
>   ret = pm_clk_runtime_resume(&pdev->dev);
>         ^~~~~~~~~~~~~~~~~~~~~
> ../drivers/clk/qcom/camcc-sc7180.c:1681:3: error: implicit declaration of function ‘pm_clk_runtime_suspend’; did you mean ‘pm_runtime_suspend’? [-Werror=implicit-function-declaration]
>    pm_clk_runtime_suspend(&pdev->dev);
>    ^~~~~~~~~~~~~~~~~~~~~~
> 
> Fixes: 15d09e830bbc ("clk: qcom: camcc: Add camera clock controller driver for SC7180")
> Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
> Cc: "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx>
> Cc: Len Brown <len.brown@xxxxxxxxx>
> Cc: Pavel Machek <pavel@xxxxxx>
> Cc: linux-pm@xxxxxxxxxxxxxxx
> Cc: Michael Turquette <mturquette@xxxxxxxxxxxx>
> Cc: Stephen Boyd <sboyd@xxxxxxxxxx>
> Cc: linux-clk@xxxxxxxxxxxxxxx
> Cc: Taniya Das <tdas@xxxxxxxxxxxxxx>
> Cc: linux-next@xxxxxxxxxxxxxxx

This fixes the same build failure that I saw with s390 all{mod,yes}config.

Build-tested-by: Nathan Chancellor <natechancellor@xxxxxxxxx>
Reviewed-by: Nathan Chancellor <natechancellor@xxxxxxxxx>

> ---
>  include/linux/pm_clock.h |    9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> --- linux-next-20201106.orig/include/linux/pm_clock.h
> +++ linux-next-20201106/include/linux/pm_clock.h
> @@ -83,6 +83,15 @@ static inline void pm_clk_remove(struct
>  static inline void pm_clk_remove_clk(struct device *dev, struct clk *clk)
>  {
>  }
> +
> +static inline int pm_clk_runtime_suspend(struct device *dev)
> +{
> +	return 0;
> +}
> +static inline int pm_clk_runtime_resume(struct device *dev)
> +{
> +	return 0;
> +}
>  #endif
>  
>  #ifdef CONFIG_HAVE_CLK