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tools: usb: testusb: update default vary for superspeed

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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>
This commit is contained in:
Felipe Balbi 2017-04-25 14:23:41 +03:00
parent 04fb365c45
commit a7ea58f381
1 changed files with 9 additions and 7 deletions
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16
tools/usb/testusb.c
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@ -387,15 +387,17 @@ int main (int argc, char **argv)
/* 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 @@ usage:
"\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;
}