From: Felipe Balbi <felipe.balbi@linux.intel.com>
Date: Thu, 9 Jun 2016 13:24:08 +0000 (+0300)
Subject: UPSTREAM: usb: dwc3: gadget: remove udelay() from run_stop()
X-Git-Tag: firefly_0821_release~1779
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=74069572234d0c7f1b3e8d92eb43660a54ed89c8;p=firefly-linux-kernel-4.4.55.git

UPSTREAM: usb: dwc3: gadget: remove udelay() from run_stop()

testing shows that udelay() is unnecessary as
controller reaches Halted state almost
instantenously as can be seen by our timeout
variable never actually decrementing.

Change-Id: I39aa43a4d26c4e5bf7c2c49569bb5ab0c662e718
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Wu Liang feng <wulf@rock-chips.com>
(cherry picked from commit d807bdd02845d53047346a4ba6d8934597fba6d6)
---

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 6b3846b6e5ee..9ccf044ebb6f 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1594,7 +1594,6 @@ static int dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on, int suspend)
 		timeout--;
 		if (!timeout)
 			return -ETIMEDOUT;
-		udelay(1);
 	} while (1);
 
 	dwc3_trace(trace_dwc3_gadget, "gadget %s data soft-%s",