usb: dwc3: gadget: release spin lock during gadget resume
It's a requirement that we release controller's lock
while calling gadget API function pointers. This
patch just fixes that long standing bug.
Signed-off-by: Jiebing Li <jiebing.li@intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 3ac170f..3d2c53e 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2487,7 +2487,11 @@
* implemented.
*/
- dwc->gadget_driver->resume(&dwc->gadget);
+ if (dwc->gadget_driver && dwc->gadget_driver->resume) {
+ spin_unlock(&dwc->lock);
+ dwc->gadget_driver->resume(&dwc->gadget);
+ spin_lock(&dwc->lock);
+ }
}
static void dwc3_gadget_linksts_change_interrupt(struct dwc3 *dwc,