From: Wesley Cheng wcheng@codeaurora.org
commit 18ffa988dbae69cc6e9949cddd9606f6fe533894 upstream.
If an error is received when issuing a start or update transfer command, the error handler will stop all active requests (including the current USB request), and call dwc3_gadget_giveback() to notify function drivers of the requests which have been stopped. Avoid returning an error for kick transfer during EP queue, to remove duplicate cleanup operations on the request being queued.
Fixes: 8d99087c2db8 ("usb: dwc3: gadget: Properly handle failed kick_transfer") cc: stable@vger.kernel.org Signed-off-by: Wesley Cheng wcheng@codeaurora.org Link: https://lore.kernel.org/r/1620410119-24971-1-git-send-email-wcheng@codeauror... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/dwc3/gadget.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1566,7 +1566,9 @@ static int __dwc3_gadget_ep_queue(struct } }
- return __dwc3_gadget_kick_transfer(dep); + __dwc3_gadget_kick_transfer(dep); + + return 0; }
static int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request,