diff --git a/include/linux/pm.h b/include/linux/pm.h
index 6035209cf31ebca6f1ff3da3a142808604f0979c..7a516690dcb36e9a07e715c09f1b2732a243dedf 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -125,12 +125,12 @@ typedef int __bitwise suspend_disk_method_t;
  * struct pm_ops - Callbacks for managing platform dependent suspend states.
  * @valid: Callback to determine whether the given state can be entered.
  * 	If %CONFIG_SOFTWARE_SUSPEND is set then %PM_SUSPEND_DISK is
- *	always valid and never passed to this call.
- *	If not assigned, all suspend states are advertised as valid
- *	in /sys/power/state (but can still be rejected by prepare or enter.)
- *	Since new states can be added for other platforms, you should
- *	assign this callback. There is a %pm_valid_only_mem function
- *	available if you only implemented mem sleep.
+ *	always valid and never passed to this call. If not assigned,
+ *	no suspend states are valid.
+ *	Valid states are advertised in /sys/power/state but can still
+ *	be rejected by prepare or enter if the conditions aren't right.
+ *	There is a %pm_valid_only_mem function available that can be assigned
+ *	to this if you only implement mem sleep.
  *
  * @prepare: Prepare the platform for the given suspend state. Can return a
  *	negative error code if necessary.
diff --git a/kernel/power/main.c b/kernel/power/main.c
index f94f4e20115a665ae8cb20c3f6a7f0c4c0c9cd0e..72419a3b1bebaa4112b256a10f724c38d762c80f 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -198,8 +198,8 @@ static inline int valid_state(suspend_state_t state)
 
 	/* all other states need lowlevel support and need to be
 	 * valid to the lowlevel implementation, no valid callback
-	 * implies that all are valid. */
-	if (!pm_ops || (pm_ops->valid && !pm_ops->valid(state)))
+	 * implies that none are valid. */
+	if (!pm_ops || !pm_ops->valid || !pm_ops->valid(state))
 		return 0;
 	return 1;
 }