PM / Suspend: Avoid code duplication in suspend statistics update

The code
       if (error) {
               suspend_stats.fail++;
               dpm_save_failed_errno(error);
       } else
               suspend_stats.success++;

Appears in the kernel/power/main.c and kernel/power/suspend.c.

This patch just creates a new function to avoid duplicated code.
Suggested-by: NSrivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: NMarcos Paulo de Souza <marcos.mage@gmail.com>
Acked-by: NSrivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>

include/linux/suspend.h

@@ -94,6 +94,22 @@ static inline void dpm_save_failed_step(enum suspend_stat_step step)
 	suspend_stats.last_failed_step %= REC_FAILED_NUM;
 }
 
+/**
+ * suspend_stats_update - Update success/failure statistics of suspend-to-ram
+ *
+ * @error: Value returned by enter_state() function
+ */
+static inline void suspend_stats_update(int error)
+{
+	if (error) {
+		suspend_stats.fail++;
+		dpm_save_failed_errno(error);
+	} else {
+		suspend_stats.success++;
+	}
+}
+
+
 /**
  * struct platform_suspend_ops - Callbacks for managing platform dependent
  *	system sleep states.

kernel/power/main.c

@@ -296,11 +296,7 @@ static ssize_t state_store(struct kobject *kobj, struct kobj_attribute *attr,
 	}
 	if (state < PM_SUSPEND_MAX && *s) {
 		error = enter_state(state);
-		if (error) {
-			suspend_stats.fail++;
-			dpm_save_failed_errno(error);
-		} else
-			suspend_stats.success++;
+		suspend_stats_update(error);
 	}
 #endif
 

kernel/power/suspend.c

@@ -321,11 +321,7 @@ int pm_suspend(suspend_state_t state)
 	int ret;
 	if (state > PM_SUSPEND_ON && state < PM_SUSPEND_MAX) {
 		ret = enter_state(state);
-		if (ret) {
-			suspend_stats.fail++;
-			dpm_save_failed_errno(ret);
-		} else
-			suspend_stats.success++;
+		suspend_stats_update(ret);
 		return ret;
 	}
 	return -EINVAL;