powerpc/8xx: use modify_instruction_site()

Instead of hardcoding the TLB handlers patching, use
the newly created modify_instruction_site() helper.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/mm/8xx_mmu.c b/arch/powerpc/mm/8xx_mmu.c
index e2b6687..bfa503c 100644 (file)
--- a/arch/powerpc/mm/8xx_mmu.c
+++ b/arch/powerpc/mm/8xx_mmu.c
@@ -100,11 +100,7 @@ static void __init mmu_mapin_immr(void)
 
 static void __init mmu_patch_cmp_limit(s32 *site, unsigned long mapped)
 {
-       unsigned int instr = *(unsigned int *)patch_site_addr(site);
-
-       instr &= 0xffff0000;
-       instr |= (unsigned long)__va(mapped) >> 16;
-       patch_instruction_site(site, instr);
+       modify_instruction_site(site, 0xffff, (unsigned long)__va(mapped) >> 16);
 }
 
 unsigned long __init mmu_mapin_ram(unsigned long top)