From 1fc2b00fba55f70ab32ecc493efbca9a1a76a4e3 Mon Sep 17 00:00:00 2001
From: Masatake YAMATO <yamato@redhat.com>
Date: Wed, 10 Apr 2013 11:24:38 -0500
Subject: [SCSI] libiscsi: avoid unnecessary multiple NULL assignments

In iscsi_free_task, NULL is assigned to task->sc twice: before and
after kfifo_in invocatoin. Allocating and freeing iscsi_task are guarded
with session->lock, so multiple NULL assignments cause no trouble. But
people reading the source code may be confused.

The second NULL assignment comes from commit:

    3e5c28ad0391389959ccae81c938c7533efb3490

It seems that the line after kfifo_in invocation was introduced
accidentally.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index d5e5c44..5de9469 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -507,7 +507,6 @@ static void iscsi_free_task(struct iscsi_task *task)
 	kfifo_in(&session->cmdpool.queue, (void*)&task, sizeof(void*));
 
 	if (sc) {
-		task->sc = NULL;
 		/* SCSI eh reuses commands to verify us */
 		sc->SCp.ptr = NULL;
 		/*
-- 
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