From:   Rikard Falkeborn <rikard.falkeborn@gmail.com>
To:     Will Deacon <will@kernel.org>, Robin Murphy <robin.murphy@arm.com>,
        Joerg Roedel <joro@8bytes.org>
Cc:     Jonathan Cameron <Jonathan.Cameron@huawei.com>,
        Jean-Philippe Brucker <jean-philippe@linaro.org>,
        Eric Auger <eric.auger@redhat.com>,
        linux-arm-kernel@lists.infradead.org,
        iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
        Rikard Falkeborn <rikard.falkeborn@gmail.com>
Subject: [PATCH] iommu/arm-smmu-v3: Constify arm_smmu_mmu_notifier_ops
Date:   Sat,  4 Dec 2021 23:33:01 +0100
Message-Id: <20211204223301.100649-1-rikard.falkeborn@gmail.com>
MIME-Version: 1.0
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The only usage of arm_smmu_mmu_notifier_ops is to assign its address to
the ops field in the mmu_notifier struct, which is a pointer to const
struct mmu_notifier_ops. Make it const to allow the compiler to put it
in read-only memory.

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
---
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c
index ee66d1f4cb81..a737ba5f727e 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c
@@ -220,7 +220,7 @@ static void arm_smmu_mmu_notifier_free(struct mmu_notifier *mn)
 	kfree(mn_to_smmu(mn));
 }
 
-static struct mmu_notifier_ops arm_smmu_mmu_notifier_ops = {
+static const struct mmu_notifier_ops arm_smmu_mmu_notifier_ops = {
 	.invalidate_range	= arm_smmu_mm_invalidate_range,
 	.release		= arm_smmu_mm_release,
 	.free_notifier		= arm_smmu_mmu_notifier_free,
-- 
2.34.1