Added a safety net to make sure that
composite_disconnect does not end up disconneting
a NULL device. Prevents NULL pointer crash.
Signed-off-by: Badhri Jagan Sridharan <Badhri@xxxxxxxxxx>
---
drivers/usb/gadget/composite.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index 13adfd1..90b37bd 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -1823,6 +1823,11 @@ void composite_disconnect(struct usb_gadget *gadget)
struct usb_composite_dev *cdev = get_gadget_data(gadget);
unsigned long flags;
+ if (!cdev) {
+ WARN(1, "Trying to disconnect a NULL composite device\n");
+ return;
+ }
+
/* REVISIT: should we have config and device level
* disconnect callbacks?
*/
--
2.2.0.rc0.207.ga3a616c
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