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-rw-r--r--kernel/power/main.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/kernel/power/main.c b/kernel/power/main.c
index 053c0a7d7f57..f94f4e20115a 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -48,6 +48,19 @@ void pm_set_ops(struct pm_ops * ops)
mutex_unlock(&pm_mutex);
}
+/**
+ * pm_valid_only_mem - generic memory-only valid callback
+ *
+ * pm_ops drivers that implement mem suspend only and only need
+ * to check for that in their .valid callback can use this instead
+ * of rolling their own .valid callback.
+ */
+int pm_valid_only_mem(suspend_state_t state)
+{
+ return state == PM_SUSPEND_MEM;
+}
+
+
static inline void pm_finish(suspend_state_t state)
{
if (pm_ops->finish)