From: Felipe Balbi <felipe.balbi@linux.intel.com>
Date: Mon, 30 May 2016 10:41:22 +0000 (+0300)
Subject: UPSTREAM: usb: dwc3: gadget: start Bulk endpoints more frequently
X-Git-Tag: firefly_0821_release~1784
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=796b829ebb9421c85c01878ea040055d76b7bbd0;p=firefly-linux-kernel-4.4.55.git

UPSTREAM: usb: dwc3: gadget: start Bulk endpoints more frequently

Now we can try to issue Update Transfer every time
gadget driver queues a new request. This will make
sure we keep controller's queue busy for as long as
possible.

Change-Id: Id0418f2b4930e442d3bae7be87270100c0b347f5
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Wu Liang feng <wulf@rock-chips.com>
(cherry picked from commit ba62c09d5cc240e55eb39e92d88f1036bb1d9221)
---

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 8233716efb36..178cf6581cfe 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1144,8 +1144,7 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
 	 * little bit faster.
 	 */
 	if (!usb_endpoint_xfer_isoc(dep->endpoint.desc) &&
-			!usb_endpoint_xfer_int(dep->endpoint.desc) &&
-			!(dep->flags & DWC3_EP_BUSY)) {
+			!usb_endpoint_xfer_int(dep->endpoint.desc)) {
 		ret = __dwc3_gadget_kick_transfer(dep, 0);
 		goto out;
 	}