linux-kernel - [010/146] [SCSI] qla2xxx: Fix vport delete hang when logins are outstanding.

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Date:	Wed, 01 Jun 2011 16:59:06 +0900
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Arun Easi <arun.easi@...gic.com>,
	Madhuranath Iyengar <Madhu.Iyengar@...gic.com>,
	James Bottomley <jbottomley@...allels.com>,
	James Bottomley <James.Bottomley@...e.de>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [010/146] [SCSI] qla2xxx: Fix vport delete hang when logins are outstanding.

2.6.38-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Arun Easi <arun.easi@...gic.com>

commit 9f40682e2857a3c2ddb80a87b185af3c6a708346 upstream.

Timer is required to flush out entries that may be present in work queues.

Signed-off-by: Arun Easi <arun.easi@...gic.com>
Signed-off-by: Madhuranath Iyengar <Madhu.Iyengar@...gic.com>
Signed-off-by: James Bottomley <jbottomley@...allels.com>
Signed-off-by: James Bottomley <James.Bottomley@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/scsi/qla2xxx/qla_attr.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -1877,14 +1877,15 @@ qla24xx_vport_delete(struct fc_vport *fc
 
 	scsi_remove_host(vha->host);
 
+	/* Allow timer to run to drain queued items, when removing vp */
+	qla24xx_deallocate_vp_id(vha);
+
 	if (vha->timer_active) {
 		qla2x00_vp_stop_timer(vha);
 		DEBUG15(printk(KERN_INFO "scsi(%ld): timer for the vport[%d]"
 		" = %p has stopped\n", vha->host_no, vha->vp_idx, vha));
 	}
 
-	qla24xx_deallocate_vp_id(vha);
-
 	/* No pending activities shall be there on the vha now */
 	DEBUG(msleep(random32()%10));  /* Just to see if something falls on
 					* the net we have placed below */


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