linux-kernel - [PATCH 3.2 037/107] usb: gadget: m66592-udc: forever loop in set

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Message-ID: <lsq.1444349547.368310579@decadent.org.uk>
Date:	Fri, 09 Oct 2015 01:12:27 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org, "Felipe Balbi" <balbi@...com>,
	"Dan Carpenter" <dan.carpenter@...cle.com>
Subject: [PATCH 3.2 037/107] usb: gadget: m66592-udc: forever loop in
 set_feature()

3.2.72-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@...cle.com>

commit 5feb5d2003499b1094d898c010a7604d7afddc4c upstream.

There is an "&&" vs "||" typo here so this loops 3000 times or if we get
unlucky it could loop forever.

Fixes: ceaa0a6eeadf ('usb: gadget: m66592-udc: add support for TEST_MODE')
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Felipe Balbi <balbi@...com>
[bwh: Backported to 3.2: adjust filename]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/usb/gadget/m66592-udc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/gadget/m66592-udc.c
+++ b/drivers/usb/gadget/m66592-udc.c
@@ -1052,7 +1052,7 @@ static void set_feature(struct m66592 *m
 				tmp = m66592_read(m66592, M66592_INTSTS0) &
 								M66592_CTSQ;
 				udelay(1);
-			} while (tmp != M66592_CS_IDST || timeout-- > 0);
+			} while (tmp != M66592_CS_IDST && timeout-- > 0);
 
 			if (tmp == M66592_CS_IDST)
 				m66592_bset(m66592,

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