usb: dwc3: clear 'res_trans_idx' as soon as it becomes invalid
Transfer resource index is cleared in hardware when XFERCOMPLETE
event is generated, so clear the driver's res_trans_idx variable
immediately after that event is received. The upcoming hibernation
patches depend on this change.
Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index bfdfd4f..da317f6 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1628,10 +1628,8 @@
status = -ECONNRESET;
clean_busy = dwc3_cleanup_done_reqs(dwc, dep, event, status);
- if (clean_busy) {
+ if (clean_busy)
dep->flags &= ~DWC3_EP_BUSY;
- dep->res_trans_idx = 0;
- }
/*
* WORKAROUND: This is the 2nd half of U1/U2 -> U0 workaround.
@@ -1736,6 +1734,8 @@
switch (event->endpoint_event) {
case DWC3_DEPEVT_XFERCOMPLETE:
+ dep->res_trans_idx = 0;
+
if (usb_endpoint_xfer_isoc(dep->desc)) {
dev_dbg(dwc->dev, "%s is an Isochronous endpoint\n",
dep->name);