From c0aec6680b6c82fe893a546e322e1130cd5cf21e Mon Sep 17 00:00:00 2001
From: Robin Murphy <robin.murphy@arm.com>
Date: Thu, 1 Apr 2021 14:56:25 +0100
Subject: [PATCH] iommu: Statically set module owner
It happens that the 3 drivers which first supported being modular are
also ones which play games with their pgsize_bitmap, so have non-const
iommu_ops where dynamically setting the owner manages to work out OK.
However, it's less than ideal to force that upon all drivers which want
to be modular - like the new sprd-iommu driver which now has a potential
bug in that regard - so let's just statically set the module owner and
let ops remain const wherever possible.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/31423b99ff609c3d4b291c701a7a7a810d9ce8dc.1617285386.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 1 +
drivers/iommu/arm/arm-smmu/arm-smmu.c | 1 +
drivers/iommu/sprd-iommu.c | 1 +
drivers/iommu/virtio-iommu.c | 1 +
include/linux/iommu.h | 9 +--------
5 files changed, 5 insertions(+), 8 deletions(-)
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index 6f8ffc86a1152..bee7ce246dd22 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -2674,6 +2674,7 @@ static struct iommu_ops arm_smmu_ops = {
.sva_unbind = arm_smmu_sva_unbind,
.sva_get_pasid = arm_smmu_sva_get_pasid,
.pgsize_bitmap = -1UL, /* Restricted during device attach */
+ .owner = THIS_MODULE,
};
/* Probing and initialisation functions */
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c
index 3c6adcdb201bb..837a2f1816b7b 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c
@@ -1577,6 +1577,7 @@ static struct iommu_ops arm_smmu_ops = {
.put_resv_regions = generic_iommu_put_resv_regions,
.def_domain_type = arm_smmu_def_domain_type,
.pgsize_bitmap = -1UL, /* Restricted during device attach */
+ .owner = THIS_MODULE,
};
static void arm_smmu_device_reset(struct arm_smmu_device *smmu)
diff --git a/drivers/iommu/sprd-iommu.c b/drivers/iommu/sprd-iommu.c
index 3811a5085b505..89272f9fd8f3e 100644
--- a/drivers/iommu/sprd-iommu.c
+++ b/drivers/iommu/sprd-iommu.c
@@ -436,6 +436,7 @@ static const struct iommu_ops sprd_iommu_ops = {
.device_group = sprd_iommu_device_group,
.of_xlate = sprd_iommu_of_xlate,
.pgsize_bitmap = ~0UL << SPRD_IOMMU_PAGE_SHIFT,
+ .owner = THIS_MODULE,
};
static const struct of_device_id sprd_iommu_of_match[] = {
diff --git a/drivers/iommu/virtio-iommu.c b/drivers/iommu/virtio-iommu.c
index 2bfdd57348443..594ed827e9442 100644
--- a/drivers/iommu/virtio-iommu.c
+++ b/drivers/iommu/virtio-iommu.c
@@ -945,6 +945,7 @@ static struct iommu_ops viommu_ops = {
.get_resv_regions = viommu_get_resv_regions,
.put_resv_regions = generic_iommu_put_resv_regions,
.of_xlate = viommu_of_xlate,
+ .owner = THIS_MODULE,
};
static int viommu_init_vqs(struct viommu_dev *viommu)
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 9223a8266b083..ce904cf4e774d 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -361,19 +361,12 @@ int iommu_device_link(struct iommu_device *iommu, struct device *link);
void iommu_device_unlink(struct iommu_device *iommu, struct device *link);
int iommu_deferred_attach(struct device *dev, struct iommu_domain *domain);
-static inline void __iommu_device_set_ops(struct iommu_device *iommu,
+static inline void iommu_device_set_ops(struct iommu_device *iommu,
const struct iommu_ops *ops)
{
iommu->ops = ops;
}
-#define iommu_device_set_ops(iommu, ops) \
-do { \
- struct iommu_ops *__ops = (struct iommu_ops *)(ops); \
- __ops->owner = THIS_MODULE; \
- __iommu_device_set_ops(iommu, __ops); \
-} while (0)
-
static inline void iommu_device_set_fwnode(struct iommu_device *iommu,
struct fwnode_handle *fwnode)
{
--
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