linux-kernel - [52/75] sparc32: Be less strict in matching %lo part of relocation.

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Message-Id: <20120103223325.359306636@clark.kroah.org>
Date:	Tue, 03 Jan 2012 14:33:25 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, "David S. Miller" <davem@...emloft.net>
Subject: [52/75] sparc32: Be less strict in matching %lo part of relocation.

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

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


From: "David S. Miller" <davem@...emloft.net>

[ Upstream commit b1f44e13a525d2ffb7d5afe2273b7169d6f2222e ]

The "(insn & 0x01800000) != 0x01800000" test matches 'restore'
but that is a legitimate place to see the %lo() part of a 32-bit
symbol relocation, particularly in tail calls.

Signed-off-by: David S. Miller <davem@...emloft.net>
Tested-by: Sergei Trofimovich <slyfox@...too.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 arch/sparc/mm/btfixup.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/arch/sparc/mm/btfixup.c
+++ b/arch/sparc/mm/btfixup.c
@@ -302,8 +302,7 @@ void __init btfixup(void)
 				case 'i':	/* INT */
 					if ((insn & 0xc1c00000) == 0x01000000) /* %HI */
 						set_addr(addr, q[1], fmangled, (insn & 0xffc00000) | (p[1] >> 10));
-					else if ((insn & 0x80002000) == 0x80002000 &&
-					         (insn & 0x01800000) != 0x01800000) /* %LO */
+					else if ((insn & 0x80002000) == 0x80002000) /* %LO */
 						set_addr(addr, q[1], fmangled, (insn & 0xffffe000) | (p[1] & 0x3ff));
 					else {
 						prom_printf(insn_i, p, addr, insn);


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