linux-kernel - [RFC v3 05/15] libata: Remove host_lock unlock() + lock() from ata_scsi

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Date:	Thu, 23 Sep 2010 16:38:09 -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>,
	MPTFusionLinux <DL-MPTFusionLinux@....com>,
	"eata.c maintainer" <dario.ballabio@...ind.it>,
	Nicholas Bellinger <nab@...ux-iscsi.org>
Subject: [RFC v3 05/15] libata: Remove host_lock unlock() + lock() from ata_scsi_queuecmd()

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

This patch removes the now legacy host_lock unlock() + lock() optimization
from libata-scsi.c:ata_scsi_queuecmd()

Signed-off-by: Nicholas A. Bellinger <nab@...ux-iscsi.org>
---
 drivers/ata/libata-scsi.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index a89172c..33ead2a 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -3177,7 +3177,6 @@ int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 
 	ap = ata_shost_to_port(shost);
 
-	spin_unlock(shost->host_lock);
 	spin_lock(ap->lock);
 
 	ata_scsi_dump_cdb(ap, cmd);
@@ -3191,7 +3190,6 @@ int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
 	}
 
 	spin_unlock(ap->lock);
-	spin_lock(shost->host_lock);
 	return rc;
 }
 
-- 
1.7.3

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