linux-kernel - Re: [PATCH -next v2] clk: pm_clock: provide stubs for pm_clk_runtime_suspend/

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Message-ID: <20201110010912.GA2018177@ubuntu-m3-large-x86>
Date:   Mon, 9 Nov 2020 18:09:12 -0700
From:   Nathan Chancellor <natechancellor@...il.com>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     linux-kernel@...r.kernel.org,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <len.brown@...el.com>, Pavel Machek <pavel@....cz>,
        linux-pm@...r.kernel.org,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, linux-clk@...r.kernel.org,
        Taniya Das <tdas@...eaurora.org>, linux-next@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH -next v2] clk: pm_clock: provide stubs for
 pm_clk_runtime_suspend/_resume

On Sun, Nov 08, 2020 at 07:21:15PM -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@...radead.org>
> Cc: "Rafael J. Wysocki" <rjw@...ysocki.net>
> Cc: Len Brown <len.brown@...el.com>
> Cc: Pavel Machek <pavel@....cz>
> Cc: linux-pm@...r.kernel.org
> Cc: Michael Turquette <mturquette@...libre.com>
> Cc: Stephen Boyd <sboyd@...nel.org>
> Cc: linux-clk@...r.kernel.org
> Cc: Taniya Das <tdas@...eaurora.org>
> Cc: linux-next@...r.kernel.org
> Cc: Nathan Chancellor <natechancellor@...il.com>
> Cc: Andrew Morton <akpm@...ux-foundation.org>

Build-tested-by: Nathan Chancellor <natechancellor@...il.com>
Reviewed-by: Nathan Chancellor <natechancellor@...il.com>

> ---
> v2: move the function stubs to be inside the #else (for !CONFIG_PM)
>     as suggested by Nathan to fix another build error
> 
>  include/linux/pm_clock.h |    8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> --- linux-next-20201106.orig/include/linux/pm_clock.h
> +++ linux-next-20201106/include/linux/pm_clock.h
> @@ -27,6 +27,14 @@ extern int pm_clk_runtime_resume(struct
>  	.runtime_resume = pm_clk_runtime_resume,
>  #else
>  #define USE_PM_CLK_RUNTIME_OPS
> +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_PM_CLK