linux-kernel - [PATCH 4.2 063/110] ARM: 8449/1: fix bug in vdsomunge swab32 macro

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Date:	Fri,  6 Nov 2015 11:19:10 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Efraim Yawitz <efraim.yawitz@...il.com>,
	"H. Nikolaus Schaller" <hns@...delico.com>,
	Nathan Lynch <nathan_lynch@...tor.com>,
	Russell King <rmk+kernel@....linux.org.uk>
Subject: [PATCH 4.2 063/110] ARM: 8449/1: fix bug in vdsomunge swab32 macro

4.2-stable review patch.  If anyone has any objections, please let me know.

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

From: "H. Nikolaus Schaller" <hns@...delico.com>

commit 38850d786a799c3ff2de0dc1980902c3263698dc upstream.

Commit 8a603f91cc48 ("ARM: 8445/1: fix vdsomunge not to depend on
glibc specific byteswap.h") unfortunately introduced a bug created but
not found during discussion and patch simplification.

Reported-by: Efraim Yawitz <efraim.yawitz@...il.com>
Signed-off-by: H. Nikolaus Schaller <hns@...delico.com>
Fixes: 8a603f91cc48 ("ARM: 8445/1: fix vdsomunge not to depend on glibc specific byteswap.h")
Signed-off-by: Nathan Lynch <nathan_lynch@...tor.com>
Signed-off-by: Russell King <rmk+kernel@....linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm/vdso/vdsomunge.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm/vdso/vdsomunge.c
+++ b/arch/arm/vdso/vdsomunge.c
@@ -66,7 +66,7 @@
 	((((x) & 0x000000ff) << 24) | \
 	 (((x) & 0x0000ff00) <<  8) | \
 	 (((x) & 0x00ff0000) >>  8) | \
-	 (((x) & 0xff000000) << 24))
+	 (((x) & 0xff000000) >> 24))

 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 #define HOST_ORDER ELFDATA2LSB

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