linux-kernel - [PATCH 2/3] powerpc/64s/iommu: don't use atomic_ function on atomic64

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Date:   Wed, 11 Nov 2020 21:07:22 +1000
From:   Nicholas Piggin <npiggin@...il.com>
To:     linuxppc-dev@...ts.ozlabs.org
Cc:     Nicholas Piggin <npiggin@...il.com>, Will Deacon <will@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Boqun Feng <boqun.feng@...il.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Arnd Bergmann <arnd@...db.de>,
        Christophe Leroy <christophe.leroy@....fr>,
        Alexey Kardashevskiy <aik@...abs.ru>,
        linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: [PATCH 2/3] powerpc/64s/iommu: don't use atomic_ function on atomic64_t type

Signed-off-by: Nicholas Piggin <npiggin@...il.com>
---
 arch/powerpc/mm/book3s64/iommu_api.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/mm/book3s64/iommu_api.c b/arch/powerpc/mm/book3s64/iommu_api.c
index 563faa10bb66..685d7bb3d26f 100644
--- 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;
-- 
2.23.0