testusb: expose looping forever option "l" to user

[karo-tx-linux.git] / tools / usb / testusb.c

diff --git a/tools/usb/testusb.c b/tools/usb/testusb.c
index 82d7c590c02601c17477fff14ce7643d8af69a22..b0adb2710c0220660b0e76bc7a1d6cab73916c34 100644 (file)
--- a/tools/usb/testusb.c
+++ b/tools/usb/testusb.c
@@ -425,7 +425,7 @@ int main (int argc, char **argv)
        /* for easy use when hotplugging */
        device = getenv ("DEVICE");
 
-       while ((c = getopt (argc, argv, "D:aA:c:g:hns:t:v:")) != EOF)
+       while ((c = getopt (argc, argv, "D:aA:c:g:hlns:t:v:")) != EOF)
        switch (c) {
        case 'D':       /* device, if only one */
                device = optarg;
@@ -468,10 +468,21 @@ int main (int argc, char **argv)
        case 'h':
        default:
 usage:
-               fprintf (stderr, "usage: %s [-n] [-D dev | -a | -A usbfs-dir]\n"
-                       "\t[-c iterations]  [-t testnum]\n"
-                       "\t[-s packetsize] [-g sglen] [-v vary]\n",
-                       argv [0]);
+               fprintf (stderr,
+                       "usage: %s [options]\n"
+                       "Options:\n"
+                       "\t-D dev               only test specific device\n"
+                       "\t-A usbfs-dir\n"
+                       "\t-a           test all recognized devices\n"
+                       "\t-l           loop forever(for stress test)\n"
+                       "\t-t testnum   only run specified case\n"
+                       "\t-n           no test running, show devices to be tested\n"
+                       "Case arguments:\n"
+                       "\t-c iterations        default 1000\n"
+                       "\t-s packetsize        default 512\n"
+                       "\t-g sglen     default 32\n"
+                       "\t-v vary              default 512\n",
+                       argv[0]);
                return 1;
        }
        if (optind != argc)