This is a note to let you know that I've just added the patch titled
usb: dwc3: gadget: Synchronize IRQ between soft connect/disconnect
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-dwc3-gadget-synchronize-irq-between-soft-connect.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2b95a403609277b4821531916cd8e5a8c2c57917
Author: Wesley Cheng <quic_wcheng@xxxxxxxxxxx>
Date: Wed Aug 17 11:23:53 2022 -0700
usb: dwc3: gadget: Synchronize IRQ between soft connect/disconnect
[ Upstream commit 9711c67de7482c81e1daca3548fbc5c9603600e3 ]
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 <Thinh.Nguyen@xxxxxxxxxxxx>
Signed-off-by: Wesley Cheng <quic_wcheng@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220817182359.13550-4-quic_wcheng@xxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Stable-dep-of: c8540870af4c ("usb: dwc3: gadget: Improve dwc3_gadget_suspend() and dwc3_gadget_resume()")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index d76a4837615d9..b2ffc98c9e747 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2540,6 +2540,8 @@ 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 {
