The patch below does not apply to the 5.4-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.

Possible dependencies:

f90f5afd5083 ("usb: dwc3: gadget: Clear ep descriptor last") ffb9da4a04c6 ("usb: dwc3: gadget: Return -ESHUTDOWN on ep disable") b44c0e7fef51 ("usb: dwc3: gadget: conditionally remove requests") 5aef629704ad ("usb: dwc3: gadget: Clear DEP flags after stop transfers in ep disable") f09ddcfcb8c5 ("usb: dwc3: gadget: Prevent EP queuing while stopping transfers") a1383b3537a7 ("usb: dwc3: gadget: Restart DWC3 gadget when enabling pullup") ae7e86108b12 ("usb: dwc3: Stop active transfers before halting the controller") 140ca4cfea8a ("usb: dwc3: gadget: Handle stream transfers") e0d19563eb6c ("usb: dwc3: gadget: Wait for transfer completion") 3eaecd0c2333 ("usb: dwc3: gadget: Handle XferComplete for streams") da10bcdd6f70 ("usb: dwc3: gadget: Delay starting transfer") d3abda5a98a1 ("usb: dwc3: gadget: Clear started flag for non-IOC")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From f90f5afd5083a7cb4aee13bd4cc0ae600bd381ca Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Thinh.Nguyen@synopsys.com Date: Tue, 15 Nov 2022 17:19:43 -0800 Subject: [PATCH] usb: dwc3: gadget: Clear ep descriptor last

Until the endpoint is disabled, its descriptors should remain valid. When its requests are removed from ep disable, the request completion routine may attempt to access the endpoint's descriptor. Don't clear the descriptors before that.

Fixes: f09ddcfcb8c5 ("usb: dwc3: gadget: Prevent EP queuing while stopping transfers") Cc: stable@vger.kernel.org Signed-off-by: Thinh Nguyen Thinh.Nguyen@synopsys.com Link: https://lore.kernel.org/r/45db7c83b209259115bf652af210f8b2b3b1a383.166856136... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 8b4cfa07539d..6d524fa76443 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1024,12 +1024,6 @@ static int __dwc3_gadget_ep_disable(struct dwc3_ep *dep) reg &= ~DWC3_DALEPENA_EP(dep->number); dwc3_writel(dwc->regs, DWC3_DALEPENA, reg);

- /* Clear out the ep descriptors for non-ep0 */ - if (dep->number > 1) { - dep->endpoint.comp_desc = NULL; - dep->endpoint.desc = NULL; - } - dwc3_remove_requests(dwc, dep, -ESHUTDOWN);

dep->stream_capable = false; @@ -1044,6 +1038,12 @@ static int __dwc3_gadget_ep_disable(struct dwc3_ep *dep) mask |= (DWC3_EP_DELAY_STOP | DWC3_EP_TRANSFER_STARTED); dep->flags &= mask;

+ /* Clear out the ep descriptors for non-ep0 */ + if (dep->number > 1) { + dep->endpoint.comp_desc = NULL; + dep->endpoint.desc = NULL; + } + return 0; }