--- zzzz-none-000/linux-3.10.107/samples/hidraw/hid-example.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/samples/hidraw/hid-example.c	2021-02-04 17:41:59.000000000 +0000
@@ -46,10 +46,14 @@
 	char buf[256];
 	struct hidraw_report_descriptor rpt_desc;
 	struct hidraw_devinfo info;
+	char *device = "/dev/hidraw0";
+
+	if (argc > 1)
+		device = argv[1];
 
 	/* Open the Device with non-blocking reads. In real life,
 	   don't use a hard coded path; use libudev instead. */
-	fd = open("/dev/hidraw0", O_RDWR|O_NONBLOCK);
+	fd = open(device, O_RDWR|O_NONBLOCK);
 
 	if (fd < 0) {
 		perror("Unable to open device");