hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

iommu: Constify struct iommu_ops 

This structure is read-only data and should never be modified.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Thierry Reding 2014-06-27 09:03:12 +02:00 committed by Joerg Roedel
parent 066f2e98d8
commit b22f6434cf
14 changed files with 30 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/iommu/amd_iommu.c
View File

@ -80,7 +80,7 @@ LIST_HEAD(hpet_map);
*/
static struct protection_domain *pt_domain;
static struct iommu_ops amd_iommu_ops;
static const struct iommu_ops amd_iommu_ops;
static ATOMIC_NOTIFIER_HEAD(ppr_notifier);
int amd_iommu_max_glx_val = -1;
@ -3395,7 +3395,7 @@ static int amd_iommu_domain_has_cap(struct iommu_domain *domain,
return 0;
}
static struct iommu_ops amd_iommu_ops = {
static const struct iommu_ops amd_iommu_ops = {
.domain_init = amd_iommu_domain_init,
.domain_destroy = amd_iommu_domain_destroy,
.attach_dev = amd_iommu_attach_device,

2
drivers/iommu/arm-smmu.c
View File

@ -1609,7 +1609,7 @@ static void arm_smmu_remove_device(struct device *dev)
iommu_group_remove_device(dev);
}
static struct iommu_ops arm_smmu_ops = {
static const struct iommu_ops arm_smmu_ops = {
.domain_init = arm_smmu_domain_init,
.domain_destroy = arm_smmu_domain_destroy,
.attach_dev = arm_smmu_attach_dev,

2
drivers/iommu/exynos-iommu.c
View File

@ -1170,7 +1170,7 @@ static void exynos_iommu_remove_device(struct device *dev)
iommu_group_remove_device(dev);
}
static struct iommu_ops exynos_iommu_ops = {
static const struct iommu_ops exynos_iommu_ops = {
.domain_init = exynos_iommu_domain_init,
.domain_destroy = exynos_iommu_domain_destroy,
.attach_dev = exynos_iommu_attach_device,

2
drivers/iommu/fsl_pamu_domain.c
View File

@ -1076,7 +1076,7 @@ static u32 fsl_pamu_get_windows(struct iommu_domain *domain)
return dma_domain->win_cnt;
}
static struct iommu_ops fsl_pamu_ops = {
static const struct iommu_ops fsl_pamu_ops = {
.domain_init = fsl_pamu_domain_init,
.domain_destroy = fsl_pamu_domain_destroy,
.attach_dev = fsl_pamu_attach_device,

4
drivers/iommu/intel-iommu.c
View File

@ -450,7 +450,7 @@ EXPORT_SYMBOL_GPL(intel_iommu_gfx_mapped);
static DEFINE_SPINLOCK(device_domain_lock);
static LIST_HEAD(device_domain_list);
static struct iommu_ops intel_iommu_ops;
static const struct iommu_ops intel_iommu_ops;
static int __init intel_iommu_setup(char *str)
{
@ -4453,7 +4453,7 @@ static void intel_iommu_remove_device(struct device *dev)
iommu_device_unlink(iommu->iommu_dev, dev);
}
static struct iommu_ops intel_iommu_ops = {
static const struct iommu_ops intel_iommu_ops = {
.domain_init = intel_iommu_domain_init,
.domain_destroy = intel_iommu_domain_destroy,
.attach_dev = intel_iommu_attach_device,

19
drivers/iommu/iommu.c
View File

@ -36,6 +36,10 @@ static struct kset *iommu_group_kset;
static struct ida iommu_group_ida;
static struct mutex iommu_group_mutex;
struct iommu_callback_data {
const struct iommu_ops *ops;
};
struct iommu_group {
struct kobject kobj;
struct kobject *devices_kobj;
@ -698,7 +702,8 @@ struct iommu_group *iommu_group_get_for_dev(struct device *dev)
static int add_iommu_group(struct device *dev, void *data)
{
struct iommu_ops *ops = data;
struct iommu_callback_data *cb = data;
const struct iommu_ops *ops = cb->ops;
if (!ops->add_device)
return -ENODEV;
@ -714,7 +719,7 @@ static int iommu_bus_notifier(struct notifier_block *nb,
unsigned long action, void *data)
{
struct device *dev = data;
struct iommu_ops *ops = dev->bus->iommu_ops;
const struct iommu_ops *ops = dev->bus->iommu_ops;
struct iommu_group *group;
unsigned long group_action = 0;
@ -767,10 +772,14 @@ static struct notifier_block iommu_bus_nb = {
.notifier_call = iommu_bus_notifier,
};
static void iommu_bus_init(struct bus_type *bus, struct iommu_ops *ops)
static void iommu_bus_init(struct bus_type *bus, const struct iommu_ops *ops)
{
struct iommu_callback_data cb = {
.ops = ops,
};
bus_register_notifier(bus, &iommu_bus_nb);
bus_for_each_dev(bus, NULL, ops, add_iommu_group);
bus_for_each_dev(bus, NULL, &cb, add_iommu_group);
}
/**
@ -786,7 +795,7 @@ static void iommu_bus_init(struct bus_type *bus, struct iommu_ops *ops)
* is set up. With this function the iommu-driver can set the iommu-ops
* afterwards.
*/
int bus_set_iommu(struct bus_type *bus, struct iommu_ops *ops)
int bus_set_iommu(struct bus_type *bus, const struct iommu_ops *ops)
{
if (bus->iommu_ops != NULL)
return -EBUSY;

2
drivers/iommu/ipmmu-vmsa.c
View File

@ -1120,7 +1120,7 @@ static void ipmmu_remove_device(struct device *dev)
dev->archdata.iommu = NULL;
}
static struct iommu_ops ipmmu_ops = {
static const struct iommu_ops ipmmu_ops = {
.domain_init = ipmmu_domain_init,
.domain_destroy = ipmmu_domain_destroy,
.attach_dev = ipmmu_attach_device,

2
drivers/iommu/msm_iommu.c
View File

@ -674,7 +674,7 @@ fail:
return 0;
}
static struct iommu_ops msm_iommu_ops = {
static const struct iommu_ops msm_iommu_ops = {
.domain_init = msm_iommu_domain_init,
.domain_destroy = msm_iommu_domain_destroy,
.attach_dev = msm_iommu_attach_dev,

2
drivers/iommu/omap-iommu.c
View File

@ -1291,7 +1291,7 @@ static void omap_iommu_remove_device(struct device *dev)
kfree(arch_data);
}
static struct iommu_ops omap_iommu_ops = {
static const struct iommu_ops omap_iommu_ops = {
.domain_init = omap_iommu_domain_init,
.domain_destroy = omap_iommu_domain_destroy,
.attach_dev = omap_iommu_attach_dev,

2
drivers/iommu/shmobile-iommu.c
View File

@ -354,7 +354,7 @@ static int shmobile_iommu_add_device(struct device *dev)
return 0;
}
static struct iommu_ops shmobile_iommu_ops = {
static const struct iommu_ops shmobile_iommu_ops = {
.domain_init = shmobile_iommu_domain_init,
.domain_destroy = shmobile_iommu_domain_destroy,
.attach_dev = shmobile_iommu_attach_device,

2
drivers/iommu/tegra-gart.c
View File

@ -309,7 +309,7 @@ static int gart_iommu_domain_has_cap(struct iommu_domain *domain,
return 0;
}
static struct iommu_ops gart_iommu_ops = {
static const struct iommu_ops gart_iommu_ops = {
.domain_init = gart_iommu_domain_init,
.domain_destroy = gart_iommu_domain_destroy,
.attach_dev = gart_iommu_attach_dev,

2
drivers/iommu/tegra-smmu.c
View File

@ -947,7 +947,7 @@ static void smmu_iommu_domain_destroy(struct iommu_domain *domain)
dev_dbg(smmu->dev, "smmu_as@%p\n", as);
}
static struct iommu_ops smmu_iommu_ops = {
static const struct iommu_ops smmu_iommu_ops = {
.domain_init = smmu_iommu_domain_init,
.domain_destroy = smmu_iommu_domain_destroy,
.attach_dev = smmu_iommu_attach_dev,

2
include/linux/device.h
View File

@ -124,7 +124,7 @@ struct bus_type {
const struct dev_pm_ops *pm;
struct iommu_ops *iommu_ops;
const struct iommu_ops *iommu_ops;
struct subsys_private *p;
struct lock_class_key lock_key;

4
include/linux/iommu.h
View File

@ -50,7 +50,7 @@ struct iommu_domain_geometry {
};
struct iommu_domain {
struct iommu_ops *ops;
const struct iommu_ops *ops;
void *priv;
iommu_fault_handler_t handler;
void *handler_token;
@ -140,7 +140,7 @@ struct iommu_ops {
#define IOMMU_GROUP_NOTIFY_UNBIND_DRIVER 5 /* Pre Driver unbind */
#define IOMMU_GROUP_NOTIFY_UNBOUND_DRIVER 6 /* Post Driver unbind */
extern int bus_set_iommu(struct bus_type *bus, struct iommu_ops *ops);
extern int bus_set_iommu(struct bus_type *bus, const struct iommu_ops *ops);
extern bool iommu_present(struct bus_type *bus);
extern struct iommu_domain *iommu_domain_alloc(struct bus_type *bus);
extern struct iommu_group *iommu_group_get_by_id(int id);