[PATCH v3 14/15] iommu/mediatek: Constify iommu_ops

Yong Wu
2018-11-17T02:35:41Z

From: Arvind Yadav <arvind.yadav.cs-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

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-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Signed-off-by: Yong Wu <yong.wu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
[Yong: Change the title to iommu/mediatek: xx]
---
drivers/iommu/mtk_iommu.c | 4 ++--
drivers/iommu/mtk_iommu_v1.c | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 63406c5..5775e8f 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -119,7 +119,7 @@ struct mtk_iommu_domain {
struct iommu_domain domain;
};

-static struct iommu_ops mtk_iommu_ops;
+static const struct iommu_ops mtk_iommu_ops;

static LIST_HEAD(m4ulist); /* List all the M4U HWs */

@@ -503,7 +503,7 @@ static int mtk_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)
return iommu_fwspec_add_ids(dev, args->args, 1);
}

-static struct iommu_ops mtk_iommu_ops = {
+static const struct iommu_ops mtk_iommu_ops = {
.domain_alloc = mtk_iommu_domain_alloc,
.domain_free = mtk_iommu_domain_free,
.attach_dev = mtk_iommu_attach_device,
diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c
index 0e78084..27867b8 100644
--- a/drivers/iommu/mtk_iommu_v1.c
+++ b/drivers/iommu/mtk_iommu_v1.c
@@ -362,7 +362,7 @@ static phys_addr_t mtk_iommu_iova_to_phys(struct iommu_domain *domain,
return pa;
}

-static struct iommu_ops mtk_iommu_ops;
+static const struct iommu_ops mtk_iommu_ops;

/*
* MTK generation one iommu HW only support one iommu domain, and all the client
@@ -524,7 +524,7 @@ static int mtk_iommu_hw_init(const struct mtk_iommu_data *data)
return 0;
}

-static struct iommu_ops mtk_iommu_ops = {
+static const struct iommu_ops mtk_iommu_ops = {
.domain_alloc = mtk_iommu_domain_alloc,
.domain_free = mtk_iommu_domain_free,
.attach_dev = mtk_iommu_attach_device,
--
1.9.1