linux-kernel - [PATCH 1/3] iommu: exynos: constify iommu

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Date:   Mon, 28 Aug 2017 17:42:05 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     m.szyprowski@...sung.com, joro@...tes.org, kgene@...nel.org,
        krzk@...nel.org, matthias.bgg@...il.com, gerald.schaefer@...ibm.com
Cc:     linux-kernel@...r.kernel.org, iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org
Subject: [PATCH 1/3] iommu: exynos: constify iommu_ops

iommu_ops are not supposed to change at runtime.
Functions 'iommu_device_set_ops' and 'bus_set_iommu' working with
const iommu_ops provided by <linux/iommu.h>. So mark the non-const
structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
 drivers/iommu/exynos-iommu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 2395478..a540016 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -569,7 +569,7 @@ static void sysmmu_tlb_invalidate_entry(struct sysmmu_drvdata *data,
 	spin_unlock_irqrestore(&data->lock, flags);
 }
 
-static struct iommu_ops exynos_iommu_ops;
+static const struct iommu_ops exynos_iommu_ops;
 
 static int __init exynos_sysmmu_probe(struct platform_device *pdev)
 {
@@ -1323,7 +1323,7 @@ static int exynos_iommu_of_xlate(struct device *dev,
 	return 0;
 }
 
-static struct iommu_ops exynos_iommu_ops = {
+static const struct iommu_ops exynos_iommu_ops = {
 	.domain_alloc = exynos_iommu_domain_alloc,
 	.domain_free = exynos_iommu_domain_free,
 	.attach_dev = exynos_iommu_attach_device,
-- 
1.9.1