Patch "fotg210-udc: Add missing completion handler" has been added to the 6.1-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    fotg210-udc: Add missing completion handler

to the 6.1-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:
     fotg210-udc-add-missing-completion-handler.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 302bdb7546b3122f538ac05af25d1b894d86ffa0
Author: Fabian Vogt <fabian@xxxxxxxxxxxxxx>
Date:   Mon Jan 23 08:35:06 2023 +0100

    fotg210-udc: Add missing completion handler
    
    [ Upstream commit e55f67391fa986f7357edba0ca59e668d99c3a5f ]
    
    This is used when responding to GET_STATUS requests. Without this, it
    crashes on completion.
    
    Fixes: b84a8dee23fd ("usb: gadget: add Faraday fotg210_udc driver")
    Signed-off-by: Fabian Vogt <fabian@xxxxxxxxxxxxxx>
    Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/20230123073508.2350402-2-linus.walleij@xxxxxxxxxx
    Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/usb/gadget/udc/fotg210-udc.c b/drivers/usb/gadget/udc/fotg210-udc.c
index 693c73e5f61e8..3350b7776086a 100644
--- a/drivers/usb/gadget/udc/fotg210-udc.c
+++ b/drivers/usb/gadget/udc/fotg210-udc.c
@@ -706,6 +706,20 @@ static int fotg210_is_epnstall(struct fotg210_ep *ep)
 	return value & INOUTEPMPSR_STL_EP ? 1 : 0;
 }
 
+/* For EP0 requests triggered by this driver (currently GET_STATUS response) */
+static void fotg210_ep0_complete(struct usb_ep *_ep, struct usb_request *req)
+{
+	struct fotg210_ep *ep;
+	struct fotg210_udc *fotg210;
+
+	ep = container_of(_ep, struct fotg210_ep, ep);
+	fotg210 = ep->fotg210;
+
+	if (req->status || req->actual != req->length) {
+		dev_warn(&fotg210->gadget.dev, "EP0 request failed: %d\n", req->status);
+	}
+}
+
 static void fotg210_get_status(struct fotg210_udc *fotg210,
 				struct usb_ctrlrequest *ctrl)
 {
@@ -1171,6 +1185,8 @@ static int fotg210_udc_probe(struct platform_device *pdev)
 	if (fotg210->ep0_req == NULL)
 		goto err_map;
 
+	fotg210->ep0_req->complete = fotg210_ep0_complete;
+
 	fotg210_init(fotg210);
 
 	fotg210_disable_unplug(fotg210);