Re: [PATCH v1 1/1] serial: 8250_dw: Drop PM ifdeffery

From: Ilpo Järvinen
Date: Thu Jun 30 2022 - 03:41:54 EST


On Wed, 29 Jun 2022, Andy Shevchenko wrote:

> Drop CONFIG_PM and CONFIG_PM_SLEEP ifdeffery while converting dw8250_pm_ops
> to use new PM macros.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>

Not directily related to the patch itself but do you have any idea why
1a3c7bb08826 ("PM: core: Add new *_PM_OPS macros, deprecate old ones")
didn't wrap RUNTIME_PM_OPS() pointers with pm_ptr()? I'm asking this
because in SET_RUNTIME_PM_OPS() the callbacks are only created with
#ifdef CONFIG_PM so I'd have expected RUNTIME_PM_OPS() to maintain that
behavior but it didn't? Was it just an oversight that should be fixed?

--
i.

> ---
> drivers/tty/serial/8250/8250_dw.c | 8 ++------
> 1 file changed, 2 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
> index f71428c85562..adcc869352b1 100644
> --- a/drivers/tty/serial/8250/8250_dw.c
> +++ b/drivers/tty/serial/8250/8250_dw.c
> @@ -691,7 +691,6 @@ static int dw8250_remove(struct platform_device *pdev)
> return 0;
> }
>
> -#ifdef CONFIG_PM_SLEEP
> static int dw8250_suspend(struct device *dev)
> {
> struct dw8250_data *data = dev_get_drvdata(dev);
> @@ -709,9 +708,7 @@ static int dw8250_resume(struct device *dev)
>
> return 0;
> }
> -#endif /* CONFIG_PM_SLEEP */
>
> -#ifdef CONFIG_PM
> static int dw8250_runtime_suspend(struct device *dev)
> {
> struct dw8250_data *data = dev_get_drvdata(dev);
> @@ -733,11 +730,10 @@ static int dw8250_runtime_resume(struct device *dev)
>
> return 0;
> }
> -#endif
>
> static const struct dev_pm_ops dw8250_pm_ops = {
> - SET_SYSTEM_SLEEP_PM_OPS(dw8250_suspend, dw8250_resume)
> - SET_RUNTIME_PM_OPS(dw8250_runtime_suspend, dw8250_runtime_resume, NULL)
> + SYSTEM_SLEEP_PM_OPS(dw8250_suspend, dw8250_resume)
> + RUNTIME_PM_OPS(dw8250_runtime_suspend, dw8250_runtime_resume, NULL)
> };
>
> static const struct dw8250_platform_data dw8250_dw_apb = {
>