3  * Simple heartbeat STM source driver
6  * Heartbeat STM source will send repetitive messages over STM devices to a
30 static const char str[] = "heartbeat stm source driver is here to serve you";
34 	struct stm_heartbeat *heartbeat = container_of(hr, struct stm_heartbeat,  in stm_heartbeat_hrtimer_handler()  local
37 	stm_source_write(&heartbeat->data, 0, str, sizeof str);  in stm_heartbeat_hrtimer_handler()
38 	if (heartbeat->active)  in stm_heartbeat_hrtimer_handler()
41 	return heartbeat->active ? HRTIMER_RESTART : HRTIMER_NORESTART;  in stm_heartbeat_hrtimer_handler()
46 	struct stm_heartbeat *heartbeat =  in stm_heartbeat_link()  local
49 	heartbeat->active = 1;  in stm_heartbeat_link()
50 	hrtimer_start(&heartbeat->hrtimer, ms_to_ktime(interval_ms),  in stm_heartbeat_link()
58 	struct stm_heartbeat *heartbeat =  in stm_heartbeat_unlink()  local
61 	heartbeat->active = 0;  in stm_heartbeat_unlink()
62 	hrtimer_cancel(&heartbeat->hrtimer);  in stm_heartbeat_unlink()
74 			kasprintf(GFP_KERNEL, "heartbeat.%d", i);  in stm_heartbeat_init()