linux-kernel - [PATCH 09/12] scsi_debug: Convert to host

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Date:	Sun, 19 Dec 2010 13:22:04 -0800
From:	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>
To:	linux-scsi <linux-scsi@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	James Bottomley <James.Bottomley@...e.de>,
	Jeff Garzik <jeff@...zik.org>, Christoph Hellwig <hch@....de>,
	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	Hannes Reinecke <hare@...e.de>,
	Mike Christie <michaelc@...wisc.edu>
Cc:	Mike Anderson <andmike@...ux.vnet.ibm.com>,
	Tejun Heo <tj@...nel.org>, Vasu Dev <vasu.dev@...ux.intel.com>,
	Tim Chen <tim.c.chen@...ux.intel.com>,
	Andi Kleen <ak@...ux.intel.com>,
	Ravi Anand <ravi.anand@...gic.com>,
	Andrew Vasquez <andrew.vasquez@...gic.com>,
	Joe Eykholt <jeykholt@...co.com>,
	James Smart <james.smart@...lex.com>,
	Douglas Gilbert <dgilbert@...erlog.com>,
	adam radford <aradford@...il.com>,
	Kashyap Desai <Kashyap.Desai@....com>,
	MPTFusionLinux <DL-MPTFusionLinux@....com>,
	Nicholas Bellinger <nab@...ux-iscsi.org>
Subject: [PATCH 09/12] scsi_debug: Convert to host_lock less

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

This patch converts scsi_debug to run in host_lock less mode with interrupts
enabled, as we don't have a underly HW reason to use IRQ_DISABLE_SCSI_QCMD().

Signed-off-by: Nicholas A. Bellinger <nab@...ux-iscsi.org>
---
 drivers/scsi/scsi_debug.c |   16 +++++++---------
 1 files changed, 7 insertions(+), 9 deletions(-)

diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index c499eb3..71cd1fa 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -3538,7 +3538,7 @@ static void sdebug_remove_adapter(void)
 }
 
 static
-int scsi_debug_queuecommand_lck(struct scsi_cmnd *SCpnt, done_funct_t done)
+int scsi_debug_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *SCpnt)
 {
 	unsigned char *cmd = (unsigned char *) SCpnt->cmnd;
 	int len, k;
@@ -3566,17 +3566,17 @@ int scsi_debug_queuecommand_lck(struct scsi_cmnd *SCpnt, done_funct_t done)
 	if (target == SCpnt->device->host->hostt->this_id) {
 		printk(KERN_INFO "scsi_debug: initiator's id used as "
 		       "target!\n");
-		return schedule_resp(SCpnt, NULL, done,
+		return schedule_resp(SCpnt, NULL, SCpnt->scsi_done,
 				     DID_NO_CONNECT << 16, 0);
 	}
 
 	if ((SCpnt->device->lun >= scsi_debug_max_luns) &&
 	    (SCpnt->device->lun != SAM2_WLUN_REPORT_LUNS))
-		return schedule_resp(SCpnt, NULL, done,
+		return schedule_resp(SCpnt, NULL, SCpnt->scsi_done,
 				     DID_NO_CONNECT << 16, 0);
 	devip = devInfoReg(SCpnt->device);
 	if (NULL == devip)
-		return schedule_resp(SCpnt, NULL, done,
+		return schedule_resp(SCpnt, NULL, SCpnt->scsi_done,
 				     DID_NO_CONNECT << 16, 0);
 
 	if ((scsi_debug_every_nth != 0) &&
@@ -3610,8 +3610,8 @@ int scsi_debug_queuecommand_lck(struct scsi_cmnd *SCpnt, done_funct_t done)
 			mk_sense_buffer(devip, ILLEGAL_REQUEST,
 					INVALID_OPCODE, 0);
 			errsts = check_condition_result;
-			return schedule_resp(SCpnt, devip, done, errsts,
-					     0);
+			return schedule_resp(SCpnt, devip, SCpnt->scsi_done,
+						errsts, 0);
 		}
 	}
 
@@ -3885,12 +3885,10 @@ xdwrite_read:
 		errsts = check_condition_result;
 		break;
 	}
-	return schedule_resp(SCpnt, devip, done, errsts,
+	return schedule_resp(SCpnt, devip, SCpnt->scsi_done, errsts,
 			     (delay_override ? 0 : scsi_debug_delay));
 }
 
-static DEF_SCSI_QCMD(scsi_debug_queuecommand)
-
 static struct scsi_host_template sdebug_driver_template = {
 	.proc_info =		scsi_debug_proc_info,
 	.proc_name =		sdebug_proc_name,
-- 
1.7.3.4

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