synclink: add mutex_unlock() on error path

There is a path which still holds its mutex here.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c
index fef80cf..e63b830 100644 (file)
--- a/drivers/char/synclink_gt.c
+++ b/drivers/char/synclink_gt.c
@@ -691,8 +691,10 @@ static int open(struct tty_struct *tty, struct file *filp)
        if (info->port.count == 1) {
                /* 1st open on this device, init hardware */
                retval = startup(info);
-               if (retval < 0)
+               if (retval < 0) {
+                       mutex_unlock(&info->port.mutex);
                        goto cleanup;
+               }
        }
        mutex_unlock(&info->port.mutex);
        retval = block_til_ready(tty, filp, info);