watchdog: minor optimization in watchdog_setup()

diff --git a/src/shared/watchdog.c b/src/shared/watchdog.c
index 78c13a7b059be002ac630957beae912382010bb8..3f4effddb51c9d2807848c4c99e66af1dd735c2c 100644 (file)
--- a/src/shared/watchdog.c
+++ b/src/shared/watchdog.c
@@ -134,6 +134,10 @@ int watchdog_set_device(const char *path) {
 
 int watchdog_setup(usec_t timeout) {
 
+        /* Let's shortcut duplicated requests */
+        if (watchdog_fd >= 0 && watchdog_timeout == timeout)
+                return 0;
+
         /* Initialize the watchdog timeout with the caller value. This value is
          * going to be updated by update_timeout() with the closest value
          * supported by the driver */