linux-kernel - [PATCH 3.4 049/146] firmware/ihex2fw.c: restore missing default in switch statement

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Message-Id: <1442307861-32031-49-git-send-email-lizf@kernel.org>
Date:	Tue, 15 Sep 2015 17:02:44 +0800
From:	lizf@...nel.org
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Nicolas Iooss <nicolas.iooss_linux@....org>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Zefan Li <lizefan@...wei.com>
Subject: [PATCH 3.4 049/146] firmware/ihex2fw.c: restore missing default in switch statement

From: Nicolas Iooss <nicolas.iooss_linux@....org>

3.4.109-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit d43698e8abb58a6ac47d16e0f47bb55f452e4fc4 upstream.

Commit 2473238eac95 ("ihex: add support for CS:IP/EIP records") removes
the "default:" statement in the switch block, making the "return
usage();" line dead code and ihex2fw silently ignoring unknown options.
Restore this statement.

This bug was found by building with HOSTCC=clang and adding
-Wunreachable-code-return to HOSTCFLAGS.

Fixes: 2473238eac95 ("ihex: add support for CS:IP/EIP records")
Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@....org>
Cc: Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc: David Woodhouse <dwmw2@...radead.org>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Zefan Li <lizefan@...wei.com>
---
 firmware/ihex2fw.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/firmware/ihex2fw.c b/firmware/ihex2fw.c
index cf38e15..08d90e2 100644
--- a/firmware/ihex2fw.c
+++ b/firmware/ihex2fw.c
@@ -86,6 +86,7 @@ int main(int argc, char **argv)
 		case 'j':
 			include_jump = 1;
 			break;
+		default:
 			return usage();
 		}
 	}
-- 
1.9.1

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