usb: gadget: f_ecm: fix missing unlock on error in ecm_alloc()

Add the missing unlock before return from function ecm_alloc()
in the error handling case.

Introduced by commit da92801c647cdebfd45001fd6aaecb8f0be7f56b.
(usb: gadget: f_ecm: add configfs support)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/gadget/f_ecm.c b/drivers/usb/gadget/f_ecm.c
index fcafe1af45850f5ee3d9906efb91d4beefcccefd..5d3561ea1c1595ea30f07bc3ad35253647701d97 100644 (file)
--- a/drivers/usb/gadget/f_ecm.c
+++ b/drivers/usb/gadget/f_ecm.c
@@ -1012,6 +1012,7 @@ struct usb_function *ecm_alloc(struct usb_function_instance *fi)
                                          sizeof(ecm->ethaddr));
        if (status < 12) {
                kfree(ecm);
+               mutex_unlock(&opts->lock);
                return ERR_PTR(-EINVAL);
        }
        ecm_string_defs[1].s = ecm->ethaddr;