tools: usb: testusb: update default vary for superspeed
Currently, default vary will not accomodate superspeed endpoints
causing unexpected babble errors in the IN direction. Let's update
default 'vary' parameter so that we can maintain a "short-less"
transfer as hinted at the comment.
Reported-by: Ammy Yi <ammy.yi@intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
diff --git a/tools/usb/testusb.c b/tools/usb/testusb.c
index 0692d99..2d89b5f 100644
--- a/tools/usb/testusb.c
+++ b/tools/usb/testusb.c
@@ -387,15 +387,17 @@
/* pick defaults that works with all speeds, without short packets.
*
* Best per-frame data rates:
- * high speed, bulk 512 * 13 * 8 = 53248
- * interrupt 1024 * 3 * 8 = 24576
- * full speed, bulk/intr 64 * 19 = 1216
- * interrupt 64 * 1 = 64
- * low speed, interrupt 8 * 1 = 8
+ * super speed,bulk 1024 * 16 * 8 = 131072
+ * interrupt 1024 * 3 * 8 = 24576
+ * high speed, bulk 512 * 13 * 8 = 53248
+ * interrupt 1024 * 3 * 8 = 24576
+ * full speed, bulk/intr 64 * 19 = 1216
+ * interrupt 64 * 1 = 64
+ * low speed, interrupt 8 * 1 = 8
*/
param.iterations = 1000;
param.length = 1024;
- param.vary = 512;
+ param.vary = 1024;
param.sglen = 32;
/* for easy use when hotplugging */
@@ -457,7 +459,7 @@
"\t-c iterations default 1000\n"
"\t-s transfer length default 1024\n"
"\t-g sglen default 32\n"
- "\t-v vary default 512\n",
+ "\t-v vary default 1024\n",
argv[0]);
return 1;
}