redonkable
/
remarkable-linux
1
0
Fork 0
Code Releases Activity

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>
zero-colors
Felipe Balbi 2017-04-25 14:23:41 +03:00
parent 04fb365c45
commit a7ea58f381
1 changed files with 9 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
tools/usb/testusb.c
View File

@ -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;
}