Merge branches 'pm-core', 'pm-qos', 'pm-domains' and 'pm-opp'

[linux.git] / drivers / staging / greybus / timesync_platform.c

diff --git a/drivers/staging/greybus/timesync_platform.c b/drivers/staging/greybus/timesync_platform.c
index 113f3d6c4b3a6cdeda3fce3abe729fbc927fd9d9..27f75b17679b8f19a5f6100a769dd7b1b0f77455 100644 (file)
--- a/drivers/staging/greybus/timesync_platform.c
+++ b/drivers/staging/greybus/timesync_platform.c
@@ -45,12 +45,18 @@ u32 gb_timesync_platform_get_clock_rate(void)
 
 int gb_timesync_platform_lock_bus(struct gb_timesync_svc *pdata)
 {
+       if (!arche_platform_change_state_cb)
+               return 0;
+
        return arche_platform_change_state_cb(ARCHE_PLATFORM_STATE_TIME_SYNC,
                                              pdata);
 }
 
 void gb_timesync_platform_unlock_bus(void)
 {
+       if (!arche_platform_change_state_cb)
+               return;
+
        arche_platform_change_state_cb(ARCHE_PLATFORM_STATE_ACTIVE, NULL);
 }