linux-kernel - [PATCH 4.1 115/123] qla2xxx: Remove msleep in qlt_send_term

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Sat,  8 Aug 2015 15:09:53 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Himanshu Madhani <himanshu.madhani@...gic.com>,
	Giridhar Malavali <giridhar.malavali@...gic.com>,
	Nicholas Bellinger <nab@...ux-iscsi.org>
Subject: [PATCH 4.1 115/123] qla2xxx: Remove msleep in qlt_send_term_exchange

4.1-stable review patch.  If anyone has any objections, please let me know.

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

From: Himanshu Madhani <himanshu.madhani@...gic.com>

commit 6bc85dd595a5438b50ec085668e53ef26058bb90 upstream.

Remove unnecessary msleep from qlt_send_term_exchange as it
adds latency of 250 msec while sending terminate exchange to
an aborted task.

Signed-off-by: Himanshu Madhani <himanshu.madhani@...gic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@...gic.com>
Reviewed-by: Nicholas Bellinger <nab@...ux-iscsi.org>
Signed-off-by: Nicholas Bellinger <nab@...ux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/scsi/qla2xxx/qla_target.c |   13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -2715,7 +2715,7 @@ static int __qlt_send_term_exchange(stru
 static void qlt_send_term_exchange(struct scsi_qla_host *vha,
 	struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked)
 {
-	unsigned long flags;
+	unsigned long flags = 0;
 	int rc;
 
 	if (qlt_issue_marker(vha, ha_locked) < 0)
@@ -2731,17 +2731,18 @@ static void qlt_send_term_exchange(struc
 	rc = __qlt_send_term_exchange(vha, cmd, atio);
 	if (rc == -ENOMEM)
 		qlt_alloc_qfull_cmd(vha, atio, 0, 0);
-	spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 
 done:
 	if (cmd && ((cmd->state != QLA_TGT_STATE_ABORTED) ||
 	    !cmd->cmd_sent_to_fw)) {
-		if (!ha_locked && !in_interrupt())
-			msleep(250); /* just in case */
-
-		qlt_unmap_sg(vha, cmd);
+		if (cmd->sg_mapped)
+			qlt_unmap_sg(vha, cmd);
 		vha->hw->tgt.tgt_ops->free_cmd(cmd);
 	}
+
+	if (!ha_locked)
+		spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+
 	return;
 }
 


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/