linux-kernel - [PATCH 5.10 084/145] usb: dwc3: gadget: Clear wait flag on dequeue

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Message-Id: <20210111130052.566672513@linuxfoundation.org>
Date:   Mon, 11 Jan 2021 14:01:48 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Felipe Balbi <balbi@...nel.org>,
        Thinh Nguyen <Thinh.Nguyen@...opsys.com>
Subject: [PATCH 5.10 084/145] usb: dwc3: gadget: Clear wait flag on dequeue

From: Thinh Nguyen <Thinh.Nguyen@...opsys.com>

commit a5c7682aaaa10e42928d73de1c9e1e02d2b14c2e upstream.

If an active transfer is dequeued, then the endpoint is freed to start a
new transfer. Make sure to clear the endpoint's transfer wait flag for
this case.

Fixes: e0d19563eb6c ("usb: dwc3: gadget: Wait for transfer completion")
Cc: stable@...r.kernel.org
Acked-by: Felipe Balbi <balbi@...nel.org>
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@...opsys.com>
Link: https://lore.kernel.org/r/b81cd5b5281cfbfdadb002c4bcf5c9be7c017cfd.1609828485.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/dwc3/gadget.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1763,6 +1763,8 @@ static int dwc3_gadget_ep_dequeue(struct
 			list_for_each_entry_safe(r, t, &dep->started_list, list)
 				dwc3_gadget_move_cancelled_request(r);
 
+			dep->flags &= ~DWC3_EP_WAIT_TRANSFER_COMPLETE;
+
 			goto out;
 		}
 	}