linux-kernel - [PATCH 7/8] drivers/scsi/scsi_transport_fc.c: drop if around WARN

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Date:	Sat,  3 Nov 2012 21:30:24 +0100
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	"James E.J. Bottomley" <JBottomley@...allels.com>
Cc:	kernel-janitors@...r.kernel.org, linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 7/8] drivers/scsi/scsi_transport_fc.c: drop if around WARN_ON

From: Julia Lawall <Julia.Lawall@...6.fr>

Just use WARN_ON rather than an if containing only WARN_ON(1).

A simplified version of the semantic patch that makes this transformation
is as follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression e;
@@
- if (e) WARN_ON(1);
+ WARN_ON(e);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

---
 drivers/scsi/scsi_transport_fc.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index e894ca7..f54c945 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -1699,9 +1699,8 @@ fc_stat_show(const struct device *dev, char *buf, unsigned long offset)
 	struct fc_host_statistics *stats;
 	ssize_t ret = -ENOENT;
 
-	if (offset > sizeof(struct fc_host_statistics) ||
-	    offset % sizeof(u64) != 0)
-		WARN_ON(1);
+	WARN_ON(offset > sizeof(struct fc_host_statistics) ||
+		offset % sizeof(u64) != 0);
 
 	if (i->f->get_fc_host_stats) {
 		stats = (i->f->get_fc_host_stats)(shost);

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