linux-kernel - [PATCH] Blackfin arch: Fix decoding of opcodes 41-47 in decode

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Message-ID: <4B47822E.1080402@gmail.com>
Date:	Fri, 08 Jan 2010 20:06:22 +0100
From:	Roel Kluin <roel.kluin@...il.com>
To:	Mike Frysinger <vapier@...too.org>,
	uclinux-dist-devel@...ckfin.uclinux.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] Blackfin arch: Fix decoding of opcodes 41-47 in decode_instruction()

This condition allowed only decoding of opcode 0x0040

Signed-off-by: Roel Kluin <roel.kluin@...il.com>
---
 arch/blackfin/kernel/traps.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

Found with static code analysis. Correct?

diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c
index d3cbcd6..870d74b 100644
--- a/arch/blackfin/kernel/traps.c
+++ b/arch/blackfin/kernel/traps.c
@@ -712,7 +712,7 @@ static void decode_instruction(unsigned short *address)
 			verbose_printk("RTE");
 		else if (opcode == 0x0025)
 			verbose_printk("EMUEXCPT");
-		else if (opcode == 0x0040 && opcode <= 0x0047)
+		else if (opcode >= 0x0040 && opcode <= 0x0047)
 			verbose_printk("STI R%i", opcode & 7);
 		else if (opcode >= 0x0050 && opcode <= 0x0057)
 			verbose_printk("JUMP (P%i)", opcode & 7);
--
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