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

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>
Cc: stable <stable@vger.kernel.org> # 3.16
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index fd556e054049f633baf88d2ed2477ceabde626b2..a451eef48c9d2015c03e88369d3ecd58dea9ce36 100644 (file)
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -1649,6 +1649,7 @@ 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);