[3.16.y-ckt stable] Patch "usb: gadget: m66592-udc: forever loop in set_feature()" has been added to staging queue

Luis Henriques luis.henriques at canonical.com
Mon Sep 28 17:31:22 UTC 2015


This is a note to let you know that I have just added a patch titled

    usb: gadget: m66592-udc: forever loop in set_feature()

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.16.y-queue

This patch is scheduled to be released in version 3.16.7-ckt18.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From 9fe5baee3d4ef4e44cdf610eec27edc577fc8ddf Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter at oracle.com>
Date: Thu, 30 Jul 2015 00:30:58 +0300
Subject: usb: gadget: m66592-udc: forever loop in set_feature()

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 at oracle.com>
Signed-off-by: Felipe Balbi <balbi at ti.com>
[ luis: backported to 3.16:
  - file rename: drivers/usb/gadget/udc/m66592-udc.c ->
    drivers/usb/gadget/m66592-udc.c ]
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 drivers/usb/gadget/m66592-udc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c
index 0d17174b86f8..36b47a794d77 100644
--- a/drivers/usb/gadget/m66592-udc.c
+++ b/drivers/usb/gadget/m66592-udc.c
@@ -1052,7 +1052,7 @@ static void set_feature(struct m66592 *m66592, struct usb_ctrlrequest *ctrl)
 				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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