mmc: wmt-sdmmc: use modern PM macros

Use the modern 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.

Signed-off-by: Jisheng Zhang <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Ulf Hansson <[e-mail]>

drivers/mmc/host/wmt-sdmmc.c

···
 	dev_info(&pdev->dev, "WMT MCI device removed\n");
 }
 
-#ifdef CONFIG_PM
 static int wmt_mci_suspend(struct device *dev)
 {
 	u32 reg_tmp;
···
 	return 0;
 }
 
-static const struct dev_pm_ops wmt_mci_pm = {
-	.suspend        = wmt_mci_suspend,
-	.resume         = wmt_mci_resume,
-};
-
-#define wmt_mci_pm_ops (&wmt_mci_pm)
-
-#else	/* !CONFIG_PM */
-
-#define wmt_mci_pm_ops NULL
-
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(wmt_mci_pm_ops, wmt_mci_suspend, wmt_mci_resume);
 
 static struct platform_driver wmt_mci_driver = {
 	.probe = wmt_mci_probe,
···
 	.driver = {
 		.name = DRIVER_NAME,
 		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
-		.pm = wmt_mci_pm_ops,
+		.pm = pm_sleep_ptr(&wmt_mci_pm_ops),
 		.of_match_table = wmt_mci_dt_ids,
 	},
 };