From: Julia Lawall <julia@diku.dk>
Date: Fri, 26 Dec 2008 07:27:48 +0000 (+0100)
Subject: [SCSI] fusion: Move a dereference below a NULL test
X-Git-Tag: v2.6.29-rc1~41^2~19
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=c31558efcc45651d3e324ea861ee5934cafef8e2;p=linux-2.6-omap-h63xx.git

[SCSI] fusion: Move a dereference below a NULL test

If the NULL test is necessary, then the dereference should be moved below
the NULL test.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/).

// <smpl>
@disable is_null@
identifier f;
expression E;
identifier fld;
statement S;
@@

+ if (E == NULL) S
  f(...,E->fld,...);
- if (E == NULL) S

@@
identifier f;
expression E;
identifier fld;
statement S;
@@

+ if (!E) S
  f(...,E->fld,...);
- if (!E) S
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: "Prakash, Sathya" <Sathya.Prakash@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
---

diff --git a/drivers/message/fusion/mptctl.c b/drivers/message/fusion/mptctl.c
index b89f476cd0a..c63817117c0 100644
--- a/drivers/message/fusion/mptctl.c
+++ b/drivers/message/fusion/mptctl.c
@@ -308,10 +308,11 @@ static void mptctl_timeout_expired (MPT_IOCTL *ioctl)
 {
 	int rc = 1;
 
-	dctlprintk(ioctl->ioc, printk(MYIOC_s_DEBUG_FMT ": Timeout Expired! Host %d\n",
-				ioctl->ioc->name, ioctl->ioc->id));
 	if (ioctl == NULL)
 		return;
+	dctlprintk(ioctl->ioc,
+		   printk(MYIOC_s_DEBUG_FMT ": Timeout Expired! Host %d\n",
+		   ioctl->ioc->name, ioctl->ioc->id));
 
 	ioctl->wait_done = 0;
 	if (ioctl->reset & MPTCTL_RESET_OK)