PM: sleep: Replace strncmp() with str_has_prefix()

Use str_has_prefix() instead of strncmp() which is less
straightforward in decode_state().

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
[ rjw: Subject & changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/kernel/power/main.c b/kernel/power/main.c
index 938dc53a8b9454252c08d573527e8b061c6883b9..e8710d179b35beace0e7d48f1a2fd7af93e09ddf 100644 (file)
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -580,7 +580,7 @@ static suspend_state_t decode_state(const char *buf, size_t n)
        len = p ? p - buf : n;
 
        /* Check hibernation first. */
-       if (len == 4 && !strncmp(buf, "disk", len))
+       if (len == 4 && str_has_prefix(buf, "disk"))
                return PM_SUSPEND_MAX;
 
 #ifdef CONFIG_SUSPEND