This is a note to let you know that I've just added the patch titled
usb: gadget: udc-core: fix a regression during gadget driver
to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-linus branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the
next -rc kernel release.
If you have any questions about this process, please let me know.
>From 511f3c5326eabe1ece35202a404c24c0aeacc246 Mon Sep 17 00:00:00 2001
From: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Date: Fri, 15 Mar 2013 14:02:14 -0400
Subject: usb: gadget: udc-core: fix a regression during gadget driver
unbinding
This patch (as1666) fixes a regression in the UDC core. The core
takes care of unbinding gadget drivers, and it does the unbinding
before telling the UDC driver to turn off the controller hardware.
When the call to the udc_stop callback is made, the gadget no longer
has a driver. The callback routine should not be invoked with a
pointer to the old driver; doing so can cause problems (such as
use-after-free accesses in net2280).
This patch should be applied, with appropriate context changes, to all
the stable kernels going back to 3.1.
Signed-off-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
CC: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
---
drivers/usb/gadget/udc-core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c
index 2a9cd36..f8f62c3 100644
--- a/drivers/usb/gadget/udc-core.c
+++ b/drivers/usb/gadget/udc-core.c
@@ -216,7 +216,7 @@ static void usb_gadget_remove_driver(struct usb_udc *udc)
usb_gadget_disconnect(udc->gadget);
udc->driver->disconnect(udc->gadget);
udc->driver->unbind(udc->gadget);
- usb_gadget_udc_stop(udc->gadget, udc->driver);
+ usb_gadget_udc_stop(udc->gadget, NULL);
udc->driver = NULL;
udc->dev.driver = NULL;
--
1.8.0.rc0.18.gf84667d
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