The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x 39674be56fba1cd3a03bf4617f523a35f85fd2c1 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2023050635-groove-collage-f6db@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^..
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 39674be56fba1cd3a03bf4617f523a35f85fd2c1 Mon Sep 17 00:00:00 2001 From: Wesley Cheng quic_wcheng@quicinc.com Date: Thu, 20 Apr 2023 14:27:58 -0700 Subject: [PATCH] usb: dwc3: gadget: Execute gadget stop after halting the controller
Do not call gadget stop until the poll for controller halt is completed. DEVTEN is cleared as part of gadget stop, so the intention to allow ep0 events to continue while waiting for controller halt is not happening.
Fixes: c96683798e27 ("usb: dwc3: ep0: Don't prepare beyond Setup stage") Cc: stable@vger.kernel.org Acked-by: Thinh Nguyen Thinh.Nguyen@synopsys.com Signed-off-by: Wesley Cheng quic_wcheng@quicinc.com Link: https://lore.kernel.org/r/20230420212759.29429-2-quic_wcheng@quicinc.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 9f492c8a7d0b..dd6057bad37e 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2637,7 +2637,6 @@ static int dwc3_gadget_soft_disconnect(struct dwc3 *dwc) * bit. */ dwc3_stop_active_transfers(dwc); - __dwc3_gadget_stop(dwc); spin_unlock_irqrestore(&dwc->lock, flags);
/* @@ -2674,7 +2673,19 @@ static int dwc3_gadget_soft_disconnect(struct dwc3 *dwc) * remaining event generated by the controller while polling for * DSTS.DEVCTLHLT. */ - return dwc3_gadget_run_stop(dwc, false); + ret = dwc3_gadget_run_stop(dwc, false); + + /* + * Stop the gadget after controller is halted, so that if needed, the + * events to update EP0 state can still occur while the run/stop + * routine polls for the halted state. DEVTEN is cleared as part of + * gadget stop. + */ + spin_lock_irqsave(&dwc->lock, flags); + __dwc3_gadget_stop(dwc); + spin_unlock_irqrestore(&dwc->lock, flags); + + return ret; }
static int dwc3_gadget_pullup(struct usb_gadget *g, int is_on)