From 0bbc89c3469b1696bd74f91e2217d74e82fa4bed Mon Sep 17 00:00:00 2001 From: Wesley Cheng Date: Wed, 17 Aug 2022 11:23:53 -0700 Subject: [PATCH] UPSTREAM: usb: dwc3: gadget: Synchronize IRQ between soft connect/disconnect Ensure that there are no pending events being handled in between soft connect/disconnect transitions. As we are keeping interrupts enabled, and EP0 events are still being serviced, this avoids any stale events from being serviced. Reviewed-by: Thinh Nguyen Signed-off-by: Wesley Cheng Link: https://lore.kernel.org/r/20220817182359.13550-4-quic_wcheng@quicinc.com Signed-off-by: Greg Kroah-Hartman (cherry picked from commit 9711c67de7482c81e1daca3548fbc5c9603600e3) Bug: 263189538 Change-Id: I8ec1e0ec2fe2d48f5db26e833fb9456936380e28 Signed-off-by: Krishna Kurapati --- drivers/usb/dwc3/gadget.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index dd7fcccc2044..04475f9f40bf 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2562,6 +2562,8 @@ static int dwc3_gadget_pullup(struct usb_gadget *g, int is_on) return 0; } + synchronize_irq(dwc->irq_gadget); + if (!is_on) { ret = dwc3_gadget_soft_disconnect(dwc); } else {