From: Thinh Nguyen Thinh.Nguyen@synopsys.com
commit 4b049f55ed95cd889bcdb3034fd75e1f01852b38 upstream.
The dep->interval captures the number of frames/microframes per interval from bInterval. Fullspeed interrupt endpoint bInterval is the number of frames per interval and not 2^(bInterval - 1). So fix it here. This change is only for debugging purpose and should not affect the interrupt endpoint operation.
Fixes: 72246da40f37 ("usb: Introduce DesignWare USB3 DRD Driver") Cc: stable@vger.kernel.org Signed-off-by: Thinh Nguyen Thinh.Nguyen@synopsys.com Link: https://lore.kernel.org/r/1263b563dedc4ab8b0fb854fba06ce4bc56bd495.161282099... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/dwc3/gadget.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
--- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -538,8 +538,13 @@ static int dwc3_gadget_set_ep_config(str if (dwc->gadget.speed == USB_SPEED_FULL) bInterval_m1 = 0;
+ if (usb_endpoint_type(desc) == USB_ENDPOINT_XFER_INT && + dwc->gadget.speed == USB_SPEED_FULL) + dep->interval = desc->bInterval; + else + dep->interval = 1 << (desc->bInterval - 1); + params.param1 |= DWC3_DEPCFG_BINTERVAL_M1(bInterval_m1); - dep->interval = 1 << (desc->bInterval - 1); }
return dwc3_send_gadget_ep_cmd(dep, DWC3_DEPCMD_SETEPCONFIG, ¶ms);