USB: atm/cxacru, fix lock imbalance

We do not hold mutex in one place in cxacru_cm, but unlock it on fail path.
Fix this.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Simon Arlott <cxacru@fire.lp0.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c
index 5ed4ae0..6789089 100644 (file)
--- a/drivers/usb/atm/cxacru.c
+++ b/drivers/usb/atm/cxacru.c
@@ -485,7 +485,7 @@ static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm,
                        usb_err(instance->usbatm, "requested transfer size too large (%d, %d)\n",
                                wbuflen, rbuflen);
                ret = -ENOMEM;
-               goto fail;
+               goto err;
        }
 
        mutex_lock(&instance->cm_serialize);
@@ -565,6 +565,7 @@ static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm,
        dbg("cm %#x", cm);
 fail:
        mutex_unlock(&instance->cm_serialize);
+err:
        return ret;
 }