1 files changed, 2 insertions, 2 deletions

diff --git a/kernel/power/main.c b/kernel/power/main.c
index b98b80ccf437..8812985f3029 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -290,13 +290,13 @@ static ssize_t state_store(struct kset *kset, const char *buf, size_t n)
         len = p ? p - buf : n;
 
         /* First, check if we are requested to hibernate */
-        if (!strncmp(buf, "disk", len)) {
+        if (len == 4 && !strncmp(buf, "disk", len)) {
                 error = hibernate();
                 return error ? error : n;
         }
 
         for (s = &pm_states[state]; state < PM_SUSPEND_MAX; s++, state++) {
-                if (*s && !strncmp(buf, *s, len))
+                if (*s && len == strlen(*s) && !strncmp(buf, *s, len))
                         break;
         }
         if (state < PM_SUSPEND_MAX && *s)