From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Tue, 9 Sep 2014 08:44:10 +0000 (+0200)
Subject: usb: dwc2/gadget: break infinite loop in endpoint disable code
X-Git-Tag: v3.16.4~214
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a5e10292faafb9a6f470d2be42a7479cef2402a2;p=thirdparty%2Fkernel%2Fstable.git

usb: dwc2/gadget: break infinite loop in endpoint disable code

commit e0cbe595db72b037260bbda77106f6811a1ebb1d upstream.

This patch fixes possible freeze caused by infinite loop in interrupt
context.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 70eab95ca46ae..f3198dc9937aa 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -1650,6 +1650,7 @@ static void s3c_hsotg_txfifo_flush(struct s3c_hsotg *hsotg, unsigned int idx)
 			dev_err(hsotg->dev,
 				"%s: timeout flushing fifo (GRSTCTL=%08x)\n",
 				__func__, val);
+			break;
 		}
 
 		udelay(1);