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* [PATCH 2/3] iommu: mtk: constify iommu_ops
@ 2017-08-28 12:12 ` Arvind Yadav
  0 siblings, 0 replies; 6+ messages in thread
From: Arvind Yadav @ 2017-08-28 12:12 UTC (permalink / raw)
  To: m.szyprowski, joro, kgene, krzk, matthias.bgg, gerald.schaefer
  Cc: linux-kernel, iommu, linux-arm-kernel, linux-mediatek

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@gmail.com>
---
 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 91c6d36..eac99a3 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -102,7 +102,7 @@ struct mtk_iommu_domain {
 	struct iommu_domain		domain;
 };
 
-static struct iommu_ops mtk_iommu_ops;
+static const struct iommu_ops mtk_iommu_ops;
 
 static struct mtk_iommu_domain *to_mtk_domain(struct iommu_domain *dom)
 {
@@ -437,7 +437,7 @@ 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 bc1efbf..40b231f 100644
--- a/drivers/iommu/mtk_iommu_v1.c
+++ b/drivers/iommu/mtk_iommu_v1.c
@@ -363,7 +363,7 @@ 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
@@ -536,7 +536,7 @@ 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

^ permalink raw reply related	[flat|nested] 6+ messages in thread
[parent not found: <80e3d51296564c929a039ac83d83dd94@mtkmbs01n1.mediatek.inc>]

end of thread, other threads:[~2018-09-10  2:35 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-08-28 12:12 [PATCH 2/3] iommu: mtk: constify iommu_ops Arvind Yadav
2017-08-28 12:12 ` Arvind Yadav
2017-08-30 13:18 ` Joerg Roedel
2017-08-30 13:18   ` Joerg Roedel
2017-08-30 13:18   ` Joerg Roedel
     [not found] <80e3d51296564c929a039ac83d83dd94@mtkmbs01n1.mediatek.inc>
     [not found] ` <d7decc0805d04c148bb2cbda8b70b767@MTKMBS31N1.mediatek.inc>
     [not found]   ` <d7decc0805d04c148bb2cbda8b70b767-1/hHtGjKHHyGRgb7Xm6L22/AB3i2Q03W@public.gmane.org>
2018-09-10  2:35     ` Yong Wu

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