50 		fprintf(stderr, "Failed to open %s\n", chrdev_name);  in monitor_device()
62 		fprintf(stderr, "Failed to issue GET EVENT "  in monitor_device()
72 		fprintf(stderr, "Failed to issue GPIOHANDLE GET LINE "  in monitor_device()
78 	fprintf(stdout, "Monitoring line %d on %s\n", line, device_name);  in monitor_device()
79 	fprintf(stdout, "Initial line value: %d\n", data.values[0]);  in monitor_device()
87 				fprintf(stderr, "nothing available\n");  in monitor_device()
91 				fprintf(stderr, "Failed to read event (%d)\n",  in monitor_device()
98 			fprintf(stderr, "Reading event failed\n");  in monitor_device()
102 		fprintf(stdout, "GPIO EVENT %llu: ", event.timestamp);  in monitor_device()
105 			fprintf(stdout, "rising edge");  in monitor_device()
108 			fprintf(stdout, "falling edge");  in monitor_device()
111 			fprintf(stdout, "unknown event");  in monitor_device()
113 		fprintf(stdout, "\n");  in monitor_device()
129 	fprintf(stderr, "Usage: gpio-event-mon [options]...\n"  in print_usage()