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FROMGIT: drivers/iommu: Initialise module 'owner' field in iommu_device_set_ops()

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Requiring each IOMMU driver to initialise the 'owner' field of their
'struct iommu_ops' is error-prone and easily forgotten. Follow the
example set by PCI and USB by assigning THIS_MODULE automatically when
registering the ops structure with IOMMU core.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Will Deacon <will@kernel.org>
(cherry picked from commit fc10cca69ee8
 git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git arm/smmu)
Change-Id: I98dd7b9155dab7dc6890f1bc61f49c124b7eca36
Signed-off-by: Will Deacon <willdeacon@google.com>
(cherry picked from commit 237cd1e40dae35e2dfc1207ecc12d5338e4f4fbd)
This commit is contained in:
Will Deacon 2020-01-09 14:08:41 +00:00 committed by Will Deacon
parent 7af24377ee
commit 53fa56f06e
3 changed files with 9 additions and 4 deletions
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1
drivers/iommu/arm-smmu-v3.c
View File

@ -2733,7 +2733,6 @@ static struct iommu_ops arm_smmu_ops = {
.get_resv_regions = arm_smmu_get_resv_regions,
.put_resv_regions = arm_smmu_put_resv_regions,
.pgsize_bitmap = -1UL, /* Restricted during device attach */
.owner = THIS_MODULE,
};
/* Probing and initialisation functions */

1
drivers/iommu/arm-smmu.c
View File

@ -1612,7 +1612,6 @@ static struct iommu_ops arm_smmu_ops = {
.get_resv_regions = arm_smmu_get_resv_regions,
.put_resv_regions = arm_smmu_put_resv_regions,
.pgsize_bitmap = -1UL, /* Restricted during device attach */
.owner = THIS_MODULE,
};
static void arm_smmu_device_reset(struct arm_smmu_device *smmu)

11
include/linux/iommu.h
View File

@ -378,12 +378,19 @@ void iommu_device_sysfs_remove(struct iommu_device *iommu);
int iommu_device_link(struct iommu_device *iommu, struct device *link);
void iommu_device_unlink(struct iommu_device *iommu, struct device *link);
static inline void iommu_device_set_ops(struct iommu_device *iommu,
const struct iommu_ops *ops)
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)
{