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SubjectRe: [PATCH 7/8] watchdog: tegra_wdt: Remove #ifdef guards for PM related functions
On Tue, Jun 28, 2022 at 08:34:48PM +0100, Paul Cercueil wrote:
> Use the new DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros to
> handle the .suspend/.resume callbacks.
>
> These macros allow the suspend and resume functions to be automatically
> dropped by the compiler when CONFIG_SUSPEND is disabled, without having
> to use #ifdef guards. Not using #ifdef guards means that the code is
> always compiled independently of any Kconfig option, and thanks to that
> bugs and regressions are easier to catch.
>
> While at it, the functions tegra_wdt_runtime_{suspend,resume} were
> renamed to tegra_wdt_{suspend,resume}, as they are *not* runtime-PM
> callbacks, but standard system suspend/resume callbacks.
>
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> Cc: Thierry Reding <thierry.reding@gmail.com>
> Cc: Jonathan Hunter <jonathanh@nvidia.com>
> Cc: linux-tegra@vger.kernel.org

Reviewed-by: Guenter Roeck <linux@roeck-us.net>

> ---
> drivers/watchdog/tegra_wdt.c | 14 +++++---------
> 1 file changed, 5 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/watchdog/tegra_wdt.c b/drivers/watchdog/tegra_wdt.c
> index dfe06e506cad..d5de6c0657a5 100644
> --- a/drivers/watchdog/tegra_wdt.c
> +++ b/drivers/watchdog/tegra_wdt.c
> @@ -230,8 +230,7 @@ static int tegra_wdt_probe(struct platform_device *pdev)
> return 0;
> }
>
> -#ifdef CONFIG_PM_SLEEP
> -static int tegra_wdt_runtime_suspend(struct device *dev)
> +static int tegra_wdt_suspend(struct device *dev)
> {
> struct tegra_wdt *wdt = dev_get_drvdata(dev);
>
> @@ -241,7 +240,7 @@ static int tegra_wdt_runtime_suspend(struct device *dev)
> return 0;
> }
>
> -static int tegra_wdt_runtime_resume(struct device *dev)
> +static int tegra_wdt_resume(struct device *dev)
> {
> struct tegra_wdt *wdt = dev_get_drvdata(dev);
>
> @@ -250,7 +249,6 @@ static int tegra_wdt_runtime_resume(struct device *dev)
>
> return 0;
> }
> -#endif
>
> static const struct of_device_id tegra_wdt_of_match[] = {
> { .compatible = "nvidia,tegra30-timer", },
> @@ -258,16 +256,14 @@ static const struct of_device_id tegra_wdt_of_match[] = {
> };
> MODULE_DEVICE_TABLE(of, tegra_wdt_of_match);
>
> -static const struct dev_pm_ops tegra_wdt_pm_ops = {
> - SET_SYSTEM_SLEEP_PM_OPS(tegra_wdt_runtime_suspend,
> - tegra_wdt_runtime_resume)
> -};
> +static DEFINE_SIMPLE_DEV_PM_OPS(tegra_wdt_pm_ops,
> + tegra_wdt_suspend, tegra_wdt_resume);
>
> static struct platform_driver tegra_wdt_driver = {
> .probe = tegra_wdt_probe,
> .driver = {
> .name = "tegra-wdt",
> - .pm = &tegra_wdt_pm_ops,
> + .pm = pm_sleep_ptr(&tegra_wdt_pm_ops),
> .of_match_table = tegra_wdt_of_match,
> },
> };
> --
> 2.35.1
>

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