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testusb: expose looping forever option "l" to user 

The testusb.c tool has support for looping forever implemented, which
may be useful for stress test, yet it is not exposed to the user, so
even though the code is there, it cannot be used.  This commit adds
"l" to the set of options handled by the application which enables
the feature.

Also, I collate help information for each command line option to make
it easier to use for novice.

Signed-off-by: Du Changbin <changbinx.du@intel.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Du, ChangbinX 2012-05-23 02:43:05 +00:00 committed by Greg Kroah-Hartman
parent e714fad054
commit 7e54e97812
1 changed files with 16 additions and 5 deletions
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21
tools/usb/testusb.c
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@ -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)