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@xxxxxxxxxxxx>
---
drivers/usb/dwc3/ep0.c | 1 +
drivers/usb/dwc3/gadget.c | 6 +++---
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index bf48e2c..25910e2 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -617,6 +617,7 @@ static void dwc3_ep0_xfer_complete(struct dwc3 *dwc,
struct dwc3_ep *dep = dwc->eps[event->endpoint_number];
dep->flags &= ~DWC3_EP_BUSY;
+ dep->res_trans_idx = 0;
dwc->setup_packet_pending = false;
switch (dwc->ep0state) {
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index d94c77b0..3430dbb 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1577,10 +1577,8 @@ static void dwc3_endpoint_transfer_complete(struct dwc3 *dwc,
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.
@@ -1685,6 +1683,8 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
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);
--
1.7.4.4
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