linux-kernel - [PATCH 5/11] kernel/sysctl.c: trivial: use BUG

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Message-Id: <1312281304-11847-6-git-send-email-julia@diku.dk>
Date:	Tue,  2 Aug 2011 12:34:58 +0200
From:	Julia Lawall <julia@...u.dk>
To:	Ingo Molnar <mingo@...e.hu>, trivial@...nel.org
Cc:	kernel-janitors@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Al Viro <viro@...iv.linux.org.uk>,
	Eric Paris <eparis@...hat.com>, linux-kernel@...r.kernel.org
Subject: [PATCH 5/11] kernel/sysctl.c: trivial: use BUG_ON

From: Julia Lawall <julia@...u.dk>

Use BUG_ON(x) rather than if(x) BUG();

The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@ identifier x; @@
-if (x) BUG();
+BUG_ON(x);

@@ identifier x; @@
-if (!x) BUG();
+BUG_ON(!x);
// </smpl>

Signed-off-by: Julia Lawall <julia@...u.dk>

---
 kernel/sysctl.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff -u -p a/kernel/sysctl.c b/kernel/sysctl.c
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1600,8 +1600,7 @@ void sysctl_head_put(struct ctl_table_he
 
 struct ctl_table_header *sysctl_head_grab(struct ctl_table_header *head)
 {
-	if (!head)
-		BUG();
+	BUG_ON(!head);
 	spin_lock(&sysctl_lock);
 	if (!use_table(head))
 		head = ERR_PTR(-ENOENT);

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