[POWERPC] Clean up access to thread_info in assembly

Use (31-THREAD_SHIFT) to get to thread_info from stack pointer.  This makes
the code a bit easier to read and more robust if we ever change THREAD_SHIFT.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/powerpc/mm/hash_low_32.S b/arch/powerpc/mm/hash_low_32.S
index e10d76a860d3..ddeaf9e38ad5 100644
--- a/arch/powerpc/mm/hash_low_32.S
+++ b/arch/powerpc/mm/hash_low_32.S
@@ -191,7 +191,7 @@ _GLOBAL(add_hash_page)
         add     r3,r3,r0                /* note create_hpte trims to 24 bits */
 
 #ifdef CONFIG_SMP
-        rlwinm  r8,r1,0,0,18            /* use cpu number to make tag */
+        rlwinm  r8,r1,0,0,(31-THREAD_SHIFT) /* use cpu number to make tag */
         lwz     r8,TI_CPU(r8)           /* to go in mmu_hash_lock */
         oris    r8,r8,12
 #endif /* CONFIG_SMP */
@@ -526,7 +526,7 @@ _GLOBAL(flush_hash_pages)
 #ifdef CONFIG_SMP
         addis   r9,r7,mmu_hash_lock@ha
         addi    r9,r9,mmu_hash_lock@l
-        rlwinm  r8,r1,0,0,18
+        rlwinm  r8,r1,0,0,(31-THREAD_SHIFT)
         add     r8,r8,r7
         lwz     r8,TI_CPU(r8)
         oris    r8,r8,9