I was puzzled why uas didn't accept to bind to tcm_usb_gadget via dummy_hcd. Debugging showed that recent commit (14aec589327a6fc4035f5327d90ac5548f501c4c) added the field can_do_streams to hcd structure but only set it to 1 in the xhci driver. dummy_hcd seems to support superspeed and streams fine, so I added can_do_streams = 1 to dummy_hcd as well. This seems to allow uas to bind again and as a result performance increased more than 3x :) --- drivers/usb/gadget/dummy_hcd.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c index 8c06430..67ebf90 100644 --- a/drivers/usb/gadget/dummy_hcd.c +++ b/drivers/usb/gadget/dummy_hcd.c @@ -2544,6 +2544,8 @@ static int dummy_hcd_probe(struct platform_device *pdev) retval = usb_add_hcd(ss_hcd, 0, 0); if (retval) goto put_usb3_hcd; + + ss_hcd->can_do_streams = 1; } return 0; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
