usb: gadget: f_ncm: obtain cdev from function instead of driver_data

The 'driver_data' field in ep0 is never set to pointer to cdev, so we
have to obtain it from another source as in this context ep->driver_data
contains invalid data.

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/gadget/function/f_ncm.c b/drivers/usb/gadget/function/f_ncm.c
index 3f05c6b..394cdbf 100644 (file)
--- a/drivers/usb/gadget/function/f_ncm.c
+++ b/drivers/usb/gadget/function/f_ncm.c
@@ -586,7 +586,7 @@ static void ncm_ep0out_complete(struct usb_ep *ep, struct usb_request *req)
        unsigned                in_size;
        struct usb_function     *f = req->context;
        struct f_ncm            *ncm = func_to_ncm(f);
-       struct usb_composite_dev *cdev = ep->driver_data;
+       struct usb_composite_dev *cdev = f->config->cdev;
 
        req->context = NULL;
        if (req->status || req->actual != req->length) {