[PATCH 2/7] powerpc/mm: define an empty mm_iommu_init()

[Christophe Leroy]

To avoid ifdefs, define a empty static inline mm_iommu_init() function
when CONFIG_SPAPR_TCE_IOMMU is not selected.

Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr>
---
 arch/powerpc/include/asm/mmu_context.h | 1 +
 arch/powerpc/kernel/setup-common.c     | 2 --
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/powerpc/include/asm/mmu_context.h 
b/arch/powerpc/include/asm/mmu_context.h
index 6ee8195a2ffb..95b93ce428b7 100644
--- a/arch/powerpc/include/asm/mmu_context.h
+++ b/arch/powerpc/include/asm/mmu_context.h
@@ -52,6 +52,7 @@ static inline bool mm_iommu_is_devmem(struct mm_struct *mm, 
unsigned long hpa,
 {
        return false;
 }
+static inline void mm_iommu_init(struct mm_struct *mm) { }
 #endif
 extern void switch_slb(struct task_struct *tsk, struct mm_struct *mm);
 extern void set_context(unsigned long id, pgd_t *pgd);
diff --git a/arch/powerpc/kernel/setup-common.c 
b/arch/powerpc/kernel/setup-common.c
index 971f50d99d87..a90e8367ccde 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -956,9 +956,7 @@ void __init setup_arch(char **cmdline_p)
 #endif
 #endif
 
-#ifdef CONFIG_SPAPR_TCE_IOMMU
        mm_iommu_init(&init_mm);
-#endif
        irqstack_early_init();
        exc_lvl_early_init();
        emergency_stack_init();
-- 
2.13.3