[S390] cio: remove lock from ccw_device_oper_notify.

Remove unnecessary ccw device locking inside ccw_device_oper_notify.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

1 files changed, 1 insertions, 7 deletions

diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index cd31bb5177e6..8b5fe57fb2f3 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -346,21 +346,15 @@ ccw_device_oper_notify(struct work_struct *work)
         struct ccw_device_private *priv;
         struct ccw_device *cdev;
         int ret;
-        unsigned long flags;
 
         priv = container_of(work, struct ccw_device_private, kick_work);
         cdev = priv->cdev;
         ret = ccw_device_notify(cdev, CIO_OPER);
-        spin_lock_irqsave(cdev->ccwlock, flags);
         if (ret) {
                 /* Reenable channel measurements, if needed. */
-                spin_unlock_irqrestore(cdev->ccwlock, flags);
                 cmf_reenable(cdev);
-                spin_lock_irqsave(cdev->ccwlock, flags);
                 wake_up(&cdev->private->wait_q);
-        }
-        spin_unlock_irqrestore(cdev->ccwlock, flags);
-        if (!ret)
+        } else
                 /* Driver doesn't want device back. */
                 ccw_device_do_unreg_rereg(work);
 }