powerpc/64s/iommu: Don't use atomic_ function on atomic64_t type

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201111110723.3148665-3-npiggin@gmail.com

diff --git a/arch/powerpc/mm/book3s64/iommu_api.c b/arch/powerpc/mm/book3s64/iommu_api.c
index 563faa1..685d7bb 100644 (file)
--- a/arch/powerpc/mm/book3s64/iommu_api.c
+++ b/arch/powerpc/mm/book3s64/iommu_api.c
@@ -263,7 +263,7 @@ long mm_iommu_put(struct mm_struct *mm, struct mm_iommu_table_group_mem_t *mem)
                goto unlock_exit;
 
        /* Are there still mappings? */
-       if (atomic_cmpxchg(&mem->mapped, 1, 0) != 1) {
+       if (atomic64_cmpxchg(&mem->mapped, 1, 0) != 1) {
                ++mem->used;
                ret = -EBUSY;
                goto unlock_exit;