drivers/rtc/class: convert from Legacy pm ops to dev_pm_ops

Convert drivers/rtc/class to use dev_pm_ops for power management and
remove Legacy PM ops hooks.  With this change, rtc class registers
suspend/resume callbacks via class->pm (dev_pm_ops) instead of Legacy
class->suspend/resume.  When __device_suspend() runs call-backs, it will
find class->pm ops for the rtc class.

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Shuah Khan <shuahkhan@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index 66385402d20ebf52672a2fa2eab03cbe4b59eedc..02426812bebc5c5cc74cba4db4395e2c67d78f25 100644 (file)
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -38,7 +38,7 @@ static void rtc_device_release(struct device *dev)
 int rtc_hctosys_ret = -ENODEV;
 #endif
 
-#if defined(CONFIG_PM) && defined(CONFIG_RTC_HCTOSYS_DEVICE)
+#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_RTC_HCTOSYS_DEVICE)
 /*
  * On suspend(), measure the delta between one RTC and the
  * system's wall clock; restore it on resume().
@@ -47,7 +47,7 @@ int rtc_hctosys_ret = -ENODEV;
 static struct timespec old_rtc, old_system, old_delta;
 
 
-static int rtc_suspend(struct device *dev, pm_message_t mesg)
+static int rtc_suspend(struct device *dev)
 {
        struct rtc_device       *rtc = to_rtc_device(dev);
        struct rtc_time         tm;
@@ -135,9 +135,10 @@ static int rtc_resume(struct device *dev)
        return 0;
 }
 
+static SIMPLE_DEV_PM_OPS(rtc_class_dev_pm_ops, rtc_suspend, rtc_resume);
+#define RTC_CLASS_DEV_PM_OPS   (&rtc_class_dev_pm_ops)
 #else
-#define rtc_suspend    NULL
-#define rtc_resume     NULL
+#define RTC_CLASS_DEV_PM_OPS   NULL
 #endif
 
 
@@ -336,8 +337,7 @@ static int __init rtc_init(void)
                pr_err("couldn't create class\n");
                return PTR_ERR(rtc_class);
        }
-       rtc_class->suspend = rtc_suspend;
-       rtc_class->resume = rtc_resume;
+       rtc_class->pm = RTC_CLASS_DEV_PM_OPS;
        rtc_dev_init();
        rtc_sysfs_init(rtc_class);
        return 0;