linux-kernel - [PATCH 3/6] usb: dwc2/gadget: break infinite loop in endpoint disable code

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Date:	Tue, 09 Sep 2014 10:44:10 +0200
From:	Robert Baldyga <r.baldyga@...sung.com>
To:	Paul.Zimmerman@...opsys.com
Cc:	gregkh@...uxfoundation.org, balbi@...com,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Robert Baldyga <r.baldyga@...sung.com>
Subject: [PATCH 3/6] usb: dwc2/gadget: break infinite loop in endpoint disable
 code

From: Marek Szyprowski <m.szyprowski@...sung.com>

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

Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
Signed-off-by: Robert Baldyga <r.baldyga@...sung.com>
---
 drivers/usb/dwc2/gadget.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index fd556e0..a451eef 100644
--- 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);
-- 
1.9.1

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