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 70eab95ca46ae1fbe23974a653a22087144d10f4..f3198dc9937aa035591304ad8305bef917ffde4f 100644 (file)
--- 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);