patches.runtime_pm/0193-PM-Sleep-Make-enter_state-in-kernel-power-suspend.c-.patch

From e63cf3569f9135e10ee055a63a7dcbeeb00c1678 Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rjw@sisk.pl>
Date: Mon, 13 Feb 2012 16:29:24 +0100
Subject: PM / Sleep: Make enter_state() in kernel/power/suspend.c static

The enter_state() function in kernel/power/suspend.c should be
static and state_store() in kernel/power/suspend.c should call
pm_suspend() instead of it, so make that happen (which also reduces
code duplication related to suspend statistics).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
(cherry picked from commit 93e1ee43a72b11e1b50aab87046c131a836a4456)

Signed-off-by: Simon Horman <horms@verge.net.au>
---
 kernel/power/main.c    |    8 +++-----
 kernel/power/power.h   |    2 --
 kernel/power/suspend.c |    2 +-
 3 files changed, 4 insertions(+), 8 deletions(-)

--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -291,12 +291,10 @@ static ssize_t state_store(struct kobjec
 
 #ifdef CONFIG_SUSPEND
 	for (s = &pm_states[state]; state < PM_SUSPEND_MAX; s++, state++) {
-		if (*s && len == strlen(*s) && !strncmp(buf, *s, len))
+		if (*s && len == strlen(*s) && !strncmp(buf, *s, len)) {
+			error = pm_suspend(state);
 			break;
-	}
-	if (state < PM_SUSPEND_MAX && *s) {
-		error = enter_state(state);
-		suspend_stats_update(error);
+		}
 	}
 #endif
 
--- a/kernel/power/power.h
+++ b/kernel/power/power.h
@@ -177,13 +177,11 @@ extern const char *const pm_states[];
 
 extern bool valid_state(suspend_state_t state);
 extern int suspend_devices_and_enter(suspend_state_t state);
-extern int enter_state(suspend_state_t state);
 #else /* !CONFIG_SUSPEND */
 static inline int suspend_devices_and_enter(suspend_state_t state)
 {
 	return -ENOSYS;
 }
-static inline int enter_state(suspend_state_t state) { return -ENOSYS; }
 static inline bool valid_state(suspend_state_t state) { return false; }
 #endif /* !CONFIG_SUSPEND */
 
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -275,7 +275,7 @@ static void suspend_finish(void)
  * Fail if that's not the case.  Otherwise, prepare for system suspend, make the
  * system enter the given sleep state and clean up after wakeup.
  */
-int enter_state(suspend_state_t state)
+static int enter_state(suspend_state_t state)
 {
 	int error;