[patch 27/30] powerpc: Fix incorrect setting of __HAVE_ARCH_PTE_SPECIAL

[Greg KH]

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

------------------
From: Weirich, Bernhard <Bernhard.Weirich@xxxxxxxxxx>

[I'm going to fix upstream differently, by having all CPU types
actually support _PAGE_SPECIAL, but I prefer the simple and obvious
fix for -stable. -- Ben]

The test that decides whether to define __HAVE_ARCH_PTE_SPECIAL on
powerpc is bogus and will end up always defining it, even when
_PAGE_SPECIAL is not supported (in which case it's 0) such as on
8xx or 40x processors.

Signed-off-by: Bernhard Weirich <bernhard.weirich@xxxxxxxxxx>
Signed-off-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>


---
 arch/powerpc/include/asm/pte-common.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/powerpc/include/asm/pte-common.h
+++ b/arch/powerpc/include/asm/pte-common.h
@@ -176,7 +176,7 @@ extern unsigned long bad_call_to_PMD_PAG
 #define HAVE_PAGE_AGP
 
 /* Advertise support for _PAGE_SPECIAL */
-#ifdef _PAGE_SPECIAL
+#if _PAGE_SPECIAL != 0
 #define __HAVE_ARCH_PTE_SPECIAL
 #endif
 


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