mmc: sdhci-pltfm: Convert to use the SET_SYSTEM_SLEEP_PM_OPS

Move the system PM callbacks within #ifdef CONFIG_PM_SLEEP as to avoid
them being build when not used. This also allows us to use the
SET_SYSTEM_SLEEP_PM_OPS macro which simplifies the code.

Within this context it also makes sense to move the declaration of the
struct sdhci_pltfm_pmops, outside the #ifdef CONFIG_PM as the
SET_SYSTEM_SLEEP_PM_OPS deals with this. This further simplifies the code.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci-pltfm.c

@@ -215,7 +215,7 @@ int sdhci_pltfm_unregister(struct platform_device *pdev)
 }
 EXPORT_SYMBOL_GPL(sdhci_pltfm_unregister);
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
 static int sdhci_pltfm_suspend(struct device *dev)
 {
 	struct sdhci_host *host = dev_get_drvdata(dev);
@@ -229,13 +229,12 @@ static int sdhci_pltfm_resume(struct device *dev)
 
 	return sdhci_resume_host(host);
 }
+#endif
 
 const struct dev_pm_ops sdhci_pltfm_pmops = {
-	.suspend	= sdhci_pltfm_suspend,
-	.resume		= sdhci_pltfm_resume,
+	SET_SYSTEM_SLEEP_PM_OPS(sdhci_pltfm_suspend, sdhci_pltfm_resume)
 };
 EXPORT_SYMBOL_GPL(sdhci_pltfm_pmops);
-#endif	/* CONFIG_PM */
 
 static int __init sdhci_pltfm_drv_init(void)
 {

drivers/mmc/host/sdhci-pltfm.h

@@ -109,11 +109,7 @@ static inline void *sdhci_pltfm_priv(struct sdhci_pltfm_host *host)
 	return (void *)host->private;
 }
 
-#ifdef CONFIG_PM
 extern const struct dev_pm_ops sdhci_pltfm_pmops;
 #define SDHCI_PLTFM_PMOPS (&sdhci_pltfm_pmops)
-#else
-#define SDHCI_PLTFM_PMOPS NULL
-#endif
 
 #endif /* _DRIVERS_MMC_SDHCI_PLTFM_H */