linux-kernel - [PATCH] x86: bpf_jit_comp: simplify trivial boolean return

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Message-Id: <1416993497-27225-1-git-send-email-lambert.quentin@gmail.com>
Date:	Wed, 26 Nov 2014 10:18:17 +0100
From:	Quentin Lambert <lambert.quentin@...il.com>
To:	"David S. Miller" <davem@...emloft.net>
Cc:	Quentin Lambert <lambert.quentin@...il.com>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	James Morris <jmorris@...ei.org>,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
	Patrick McHardy <kaber@...sh.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] x86: bpf_jit_comp: simplify trivial boolean return

Remove if then else statements preceding
boolean return. Occurences were found using
Coccinelle.

The semantic patch used was:

@@
expression expr;
@@


- if ( expr )
-	return true;
- else
-	return false;
+ return expr;

Signed-off-by: Quentin Lambert <lambert.quentin@...il.com>

---
 arch/x86/net/bpf_jit_comp.c |    8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c
index 3f62734..1542f39 100644
--- a/arch/x86/net/bpf_jit_comp.c
+++ b/arch/x86/net/bpf_jit_comp.c
@@ -135,11 +135,9 @@ static const int reg2hex[] = {
  */
 static inline bool is_ereg(u32 reg)
 {
-	if (reg == BPF_REG_5 || reg == AUX_REG ||
-	    (reg >= BPF_REG_7 && reg <= BPF_REG_9))
-		return true;
-	else
-		return false;
+	return (reg == BPF_REG_5 ||
+		reg == AUX_REG ||
+		(reg >= BPF_REG_7 && reg <= BPF_REG_9));
 }
 
 /* add modifiers if 'reg' maps to x64 registers r8..r15 */

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