iommu/arm-smmu: fix compilation issue when !CONFIG_ARM_AMBA

If !CONFIG_ARM_AMBA, we shouldn't try to register ourselves with the
amba_bustype.

Signed-off-by: Will Deacon <will.deacon@arm.com>

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 0ae4dd3..6fe7922 100644 (file)
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -2004,8 +2004,10 @@ static int __init arm_smmu_init(void)
        if (!iommu_present(&platform_bus_type))
                bus_set_iommu(&platform_bus_type, &arm_smmu_ops);
 
+#ifdef CONFIG_ARM_AMBA
        if (!iommu_present(&amba_bustype))
                bus_set_iommu(&amba_bustype, &arm_smmu_ops);
+#endif
 
        return 0;
 }