linux-kernel - [PATCH v2 10/11] fnic: Remove host_lock unlock() + lock() from fnic

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Date:	Fri, 17 Sep 2010 11:23:13 -0700
From:	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>
To:	linux-scsi <linux-scsi@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Vasu Dev <vasu.dev@...ux.intel.com>,
	Tim Chen <tim.c.chen@...ux.intel.com>,
	Andi Kleen <ak@...ux.intel.com>,
	Matthew Wilcox <willy@...ux.intel.com>,
	James Bottomley <James.Bottomley@...e.de>,
	Mike Christie <michaelc@...wisc.edu>
Cc:	James Smart <james.smart@...lex.com>,
	Andrew Vasquez <andrew.vasquez@...gic.com>,
	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	Hannes Reinecke <hare@...e.de>,
	Joe Eykholt <jeykholt@...co.com>,
	Christoph Hellwig <hch@....de>,
	Nicholas Bellinger <nab@...ux-iscsi.org>
Subject: [PATCH v2 10/11] fnic: Remove host_lock unlock() + lock() from fnic_queuecommand()

From: Nicholas Bellinger <nab@...ux-iscsi.org>

This patch removes the now legacy host_lock unlock() + lock() optimization
fnic_scsi.c:fnic_queuecommand()

Signed-off-by: Nicholas A. Bellinger <nab@...ux-iscsi.org>
---
 drivers/scsi/fnic/fnic_scsi.c |    9 ---------
 1 files changed, 0 insertions(+), 9 deletions(-)

diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c
index 198cbab..7cf3372 100644
--- a/drivers/scsi/fnic/fnic_scsi.c
+++ b/drivers/scsi/fnic/fnic_scsi.c
@@ -373,13 +373,6 @@ int fnic_queuecommand(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
 	if (lp->state != LPORT_ST_READY || !(lp->link_up))
 		return SCSI_MLQUEUE_HOST_BUSY;
 
-	/*
-	 * Release host lock, use driver resource specific locks from here.
-	 * Don't re-enable interrupts in case they were disabled prior to the
-	 * caller disabling them.
-	 */
-	spin_unlock(lp->host->host_lock);
-
 	/* Get a new io_req for this SCSI IO */
 	fnic = lport_priv(lp);
 
@@ -452,8 +445,6 @@ int fnic_queuecommand(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
 		}
 	}
 out:
-	/* acquire host lock before returning to SCSI */
-	spin_lock(lp->host->host_lock);
 	return ret;
 }
 
-- 
1.7.2.3

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