When we have nothing left to be queued after handling the last trb
we have to stop the current transfer. This way we can ensure that
the next request will be queued with an new and valid timestamp
and will not directly run into an missed xfer.
Signed-off-by: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx>
---
v1 -> v2: - This Patch replaces the following patch by Michael Olbrich:
usb: dwc3: gadget: restart the transfer if a isoc request is queued too late
v2 -> v3: - rearranged condition for easier read (suggested by Tinh Nguyen)
drivers/usb/dwc3/gadget.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 7ad85a7d06f70bf..2e15878aa8ae781 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2735,7 +2735,9 @@ static bool dwc3_gadget_endpoint_trbs_complete(struct dwc3_ep *dep,
if (dep->flags & DWC3_EP_END_TRANSFER_PENDING)
goto out;
- if (status == -EXDEV && list_empty(&dep->started_list))
+ if (usb_endpoint_xfer_isoc(dep->endpoint.desc) &&
+ list_empty(&dep->started_list) &&
+ (list_empty(&dep->pending_list) || status == -EXDEV))
dwc3_stop_active_transfer(dep, true, true);
else if (dwc3_gadget_ep_should_continue(dep))
if (__dwc3_gadget_kick_transfer(dep) == 0)
--
2.27.0
