From: Pratyush Anand <pratyush.anand@st.com>
Date: Fri, 15 Jun 2012 06:24:36 +0000 (+0530)
Subject: usb: dwc3: giveback all queued request when ep disabled or reset received
X-Git-Tag: v4.13~11408^2~53^2~27^2~13
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=1591633ed6c4c3994944f31ddb59bc072a2ed0ca;p=mirror_ubuntu-bionic-kernel.git

usb: dwc3: giveback all queued request when ep disabled or reset received

In case of ep_disable and reset interrupt is received and, still there
was at least one request queued for dma transfer, then endpoint is
stopped first. Once endpoint is stopped, callback for all queued
request must be called.

Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
---

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 38cd13ffae9d..f6fb42da2e64 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -579,8 +579,11 @@ static void dwc3_remove_requests(struct dwc3 *dwc, struct dwc3_ep *dep)
 		 */
 		udelay(100);
 
-		req = next_request(&dep->req_queued);
-		dwc3_gadget_giveback(dep, req, -ESHUTDOWN);
+		while (!list_empty(&dep->req_queued)) {
+			req = next_request(&dep->req_queued);
+
+			dwc3_gadget_giveback(dep, req, -ESHUTDOWN);
+		}
 	}
 
 	while (!list_empty(&dep->request_list)) {