[PATCH 3.19 121/175] usb: dwc3: gadget: add missing spin_lock()

Greg Kroah-Hartman
2015-03-04T06:40:56Z

From: Felipe Balbi <balbi@ti.com>

commit 5c7b3b02de766a8634708953e805399e3544a290 upstream.

commit 8e74475b0e0a (usb: dwc3: gadget: use udc-core's
reset notifier) added support for the new UDC core's
reset notifier to dwc3 but while at it, it removed
a spin_lock() from dwc3_reset_gadget() which might
cause an unbalanced spin_unlock() further down the line

Fixes: 8e74475b0e0a (usb: dwc3: gadget: use udc-core's reset notifier)
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/usb/dwc3/gadget.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2043,6 +2043,7 @@ static void dwc3_resume_gadget(struct dw
if (dwc->gadget_driver && dwc->gadget_driver->resume) {
spin_unlock(&dwc->lock);
dwc->gadget_driver->resume(&dwc->gadget);
+ spin_lock(&dwc->lock);
}
}