From: Sebastian Ott <sebott@linux.vnet.ibm.com>
Date: Mon, 14 Jul 2008 07:58:53 +0000 (+0200)
Subject: [S390] cio: remove lock from ccw_device_oper_notify.
X-Git-Tag: v2.6.27-rc1~1112^2~53
X-Git-Url: https://bbs.cooldavid.org/git/?a=commitdiff_plain;h=ae437a452ed20f9d13c1f17b0356201d54394efa;p=net-next-2.6.git

[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>
---

diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index cd31bb5177e..8b5fe57fb2f 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);
 }