On Wed, Jul 05, 2023 at 10:42:57PM +0200, Paul Cercueil wrote:
> Use the new PM macros for the suspend and resume functions to be
> automatically dropped by the compiler when CONFIG_PM or
> CONFIG_PM_SLEEP are disabled, without having to use #ifdef guards.
>
> This has the advantage of always compiling these functions in,
> independently of any Kconfig option. Thanks to that, bugs and other
> regressions are subsequently easier to catch.
I have wip of something like this in a private branch, so
I'm glad you beat me up to it!
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
> ---
> Cc: Jarkko Nikula <jarkko.nikula@xxxxxxxxxxxxxxx>
> Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
> Cc: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
> Cc: Jan Dabros <jsd@xxxxxxxxxxxx>
> ---
> drivers/i2c/busses/i2c-designware-platdrv.c | 22 ++++++---------------
> 1 file changed, 6 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
> index 970c1c3b0402..855b698e99c0 100644
> --- a/drivers/i2c/busses/i2c-designware-platdrv.c
> +++ b/drivers/i2c/busses/i2c-designware-platdrv.c
> @@ -418,7 +418,6 @@ static void dw_i2c_plat_remove(struct platform_device *pdev)
> reset_control_assert(dev->rst);
> }
>
> -#ifdef CONFIG_PM_SLEEP
> static int dw_i2c_plat_prepare(struct device *dev)
> {
> /*
> @@ -429,11 +428,7 @@ static int dw_i2c_plat_prepare(struct device *dev)
> */
> return !has_acpi_companion(dev);
> }
> -#else
> -#define dw_i2c_plat_prepare NULL
> -#endif
>
> -#ifdef CONFIG_PM
> static int dw_i2c_plat_runtime_suspend(struct device *dev)
> {
> struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);
> @@ -447,7 +442,7 @@ static int dw_i2c_plat_runtime_suspend(struct device *dev)
> return 0;
> }
>
> -static int __maybe_unused dw_i2c_plat_suspend(struct device *dev)
> +static int dw_i2c_plat_suspend(struct device *dev)
> {
> struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);
>
> @@ -468,7 +463,7 @@ static int dw_i2c_plat_runtime_resume(struct device *dev)
> return 0;
> }
>
> -static int __maybe_unused dw_i2c_plat_resume(struct device *dev)
> +static int dw_i2c_plat_resume(struct device *dev)
> {
> struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);
>
> @@ -479,16 +474,11 @@ static int __maybe_unused dw_i2c_plat_resume(struct device *dev)
> }
>
> static const struct dev_pm_ops dw_i2c_dev_pm_ops = {
> - .prepare = dw_i2c_plat_prepare,
> - SET_LATE_SYSTEM_SLEEP_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume)
> - SET_RUNTIME_PM_OPS(dw_i2c_plat_runtime_suspend, dw_i2c_plat_runtime_resume, NULL)
> + .prepare = pm_sleep_ptr(dw_i2c_plat_prepare),
> + LATE_SYSTEM_SLEEP_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume)
> + RUNTIME_PM_OPS(dw_i2c_plat_runtime_suspend, dw_i2c_plat_runtime_resume, NULL)
> };
>
> -#define DW_I2C_DEV_PMOPS (&dw_i2c_dev_pm_ops)
> -#else
> -#define DW_I2C_DEV_PMOPS NULL
> -#endif
> -
> /* Work with hotplug and coldplug */
> MODULE_ALIAS("platform:i2c_designware");
>
> @@ -499,7 +489,7 @@ static struct platform_driver dw_i2c_driver = {
> .name = "i2c_designware",
> .of_match_table = of_match_ptr(dw_i2c_of_match),
> .acpi_match_table = ACPI_PTR(dw_i2c_acpi_match),
> - .pm = DW_I2C_DEV_PMOPS,
> + .pm = pm_ptr(&dw_i2c_dev_pm_ops),
> },
> };
>
> --
> 2.40.1
>
--
With Best Regards,
Andy Shevchenko
