linux-kernel - [047/139] ARM: 6031/1: fix Thumb-2 decompressor

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Message-Id: <20100422195409.503851881@kvm.kroah.org>
Date:	Thu, 22 Apr 2010 12:53:44 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Rabin Vincent <rabin@....in>,
	Russell King <rmk+kernel@....linux.org.uk>
Subject: [047/139] ARM: 6031/1: fix Thumb-2 decompressor

2.6.33-stable review patch.  If anyone has any objections, please let us know.

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

From: Rabin Vincent <rabin@....in>

commit d4d9959c099751158c5cf14813fe378e206339c6 upstream.

98e12b5a6e05413 ("ARM: Fix decompressor's kernel size estimation for
ROM=y") broke the Thumb-2 decompressor because it added an entry in the
LC0 table but didn't adjust the offset the Thumb-2 code uses to load the
SP from that table.  Fix it.

Signed-off-by: Rabin Vincent <rabin@....in>
Signed-off-by: Russell King <rmk+kernel@....linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 arch/arm/boot/compressed/head.S |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -172,7 +172,7 @@ not_angel:
 		adr	r0, LC0
  ARM(		ldmia	r0, {r1, r2, r3, r4, r5, r6, r11, ip, sp})
  THUMB(		ldmia	r0, {r1, r2, r3, r4, r5, r6, r11, ip}	)
- THUMB(		ldr	sp, [r0, #28]				)
+ THUMB(		ldr	sp, [r0, #32]				)
 		subs	r0, r0, r1		@ calculate the delta offset
 
 						@ if delta is zero, we are


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