[PATCH] gdth: Use scsi_get_command for gdth internal commands

[Boaz Harrosh <bharrosh@panasas.com>]

This is for for the next kernel window (v2.6.26). It is based on top of
both scsi-misc and scsi-rc-fixes. Once scsi-misc rebases to scsi-rc-fixes
this patch can be committed.

Boaz
---
From: Boaz Harrosh <bharrosh@panasas.com>
Date: Tue, 11 Mar 2008 17:42:06 +0200
Subject: [PATCH] gdth: Use scsi_get_command for gdth internal commands

use scsi_get_command() in __gdth_execute() of internal commands for two reasons.
- To be insulated from future scsi-ml changes and the way scsi_cmnd is
  structured / allocated.
- Hold onto the scsi_device while executing since execution can come from
  user-mode management SW through the gdth char device.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Tested-by: Sven Schnelle <svens@bitebene.org>
---
 drivers/scsi/gdth.c |   12 ++----------
 1 files changed, 2 insertions(+), 10 deletions(-)

diff --git a/drivers/scsi/gdth.c b/drivers/scsi/gdth.c
index c6d6e7c..c6e2b8d 100644
--- a/drivers/scsi/gdth.c
+++ b/drivers/scsi/gdth.c
@@ -448,17 +448,10 @@ int __gdth_execute(struct scsi_device *sdev, gdth_cmd_str *gdtcmd, char *cmnd,
     DECLARE_COMPLETION_ONSTACK(wait);
     int rval;
 
-    scp = kzalloc(sizeof(*scp), GFP_KERNEL);
+    scp = scsi_get_command(sdev, GFP_KERNEL);
     if (!scp)
         return -ENOMEM;
 
-    scp->sense_buffer = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
-    if (!scp->sense_buffer) {
-	kfree(scp);
-	return -ENOMEM;
-    }
-
-    scp->device = sdev;
     memset(&cmndinfo, 0, sizeof(cmndinfo));
 
     /* use request field to save the ptr. to completion struct. */
@@ -478,8 +471,7 @@ int __gdth_execute(struct scsi_device *sdev, gdth_cmd_str *gdtcmd, char *cmnd,
     rval = cmndinfo.status;
     if (info)
         *info = cmndinfo.info;
-    kfree(scp->sense_buffer);
-    kfree(scp);
+    scsi_put_command(scp);
     return rval;
 }
 
-- 
1.5.3.3