3.16.7-ckt18 -stable review patch.  If anyone has any objections, please let me 
know.

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

From: John David Anglin <[email protected]>

commit 1b59ddfcf1678de38a1f8ca9fb8ea5eebeff1843 upstream.

The attached change fixes the condition used in the "sub" instruction.
A double word comparison is needed.  This fixes the 64-bit LWS CAS
operation on 64-bit kernels.

I can now enable 64-bit atomic support in GCC.

Signed-off-by: John David Anglin <dave.anglin>
Signed-off-by: Helge Deller <[email protected]>
Signed-off-by: Luis Henriques <[email protected]>
---
 arch/parisc/kernel/syscall.S | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
index 7ef22e3387e0..0b8d26d3ba43 100644
--- a/arch/parisc/kernel/syscall.S
+++ b/arch/parisc/kernel/syscall.S
@@ -821,7 +821,7 @@ cas2_action:
        /* 64bit CAS */
 #ifdef CONFIG_64BIT
 19:    ldd,ma  0(%sr3,%r26), %r29
-       sub,=   %r29, %r25, %r0
+       sub,*=  %r29, %r25, %r0
        b,n     cas2_end
 20:    std,ma  %r24, 0(%sr3,%r26)
        copy    %r0, %r28
--
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