[PATCH 3/9] iommu/arm-smmu: Use helper functions to access dev->iommu_fwspec

Joerg Roedel
2018-12-11T12:19:37Z

Cc: Will Deacon <will.deacon@arm.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
drivers/iommu/arm-smmu-v3.c | 16 +++++++++-------
drivers/iommu/arm-smmu.c | 12 ++++++------
2 files changed, 15 insertions(+), 13 deletions(-)

diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 6947ccf26512..8f2d3a30d090 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -1691,24 +1691,26 @@ static void arm_smmu_install_ste_for_dev(struct iommu_fwspec *fwspec)

static void arm_smmu_detach_dev(struct device *dev)
{
- struct arm_smmu_master_data *master = dev->iommu_fwspec->iommu_priv;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
+ struct arm_smmu_master_data *master = fwspec->iommu_priv;

master->ste.assigned = false;
- arm_smmu_install_ste_for_dev(dev->iommu_fwspec);
+ arm_smmu_install_ste_for_dev(fwspec);
}

static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
{
int ret = 0;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct arm_smmu_device *smmu;
struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
struct arm_smmu_master_data *master;
struct arm_smmu_strtab_ent *ste;

- if (!dev->iommu_fwspec)
+ if (!fwspec)
return -ENOENT;

- master = dev->iommu_fwspec->iommu_priv;
+ master = fwspec->iommu_priv;
smmu = master->smmu;
ste = &master->ste;

@@ -1748,7 +1750,7 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
ste->s2_cfg = &smmu_domain->s2_cfg;
}

- arm_smmu_install_ste_for_dev(dev->iommu_fwspec);
+ arm_smmu_install_ste_for_dev(fwspec);
out_unlock:
mutex_unlock(&smmu_domain->init_mutex);
return ret;
@@ -1839,7 +1841,7 @@ static int arm_smmu_add_device(struct device *dev)
int i, ret;
struct arm_smmu_device *smmu;
struct arm_smmu_master_data *master;
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct iommu_group *group;

if (!fwspec || fwspec->ops != &arm_smmu_ops)
@@ -1890,7 +1892,7 @@ static int arm_smmu_add_device(struct device *dev)

static void arm_smmu_remove_device(struct device *dev)
{
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct arm_smmu_master_data *master;
struct arm_smmu_device *smmu;

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 5a28ae892504..988d0362cd03 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1103,7 +1103,7 @@ static bool arm_smmu_free_sme(struct arm_smmu_device *smmu, int idx)

static int arm_smmu_master_alloc_smes(struct device *dev)
{
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct arm_smmu_master_cfg *cfg = fwspec->iommu_priv;
struct arm_smmu_device *smmu = cfg->smmu;
struct arm_smmu_smr *smrs = smmu->smrs;
@@ -1206,7 +1206,7 @@ static int arm_smmu_domain_add_master(struct arm_smmu_domain *smmu_domain,
static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
{
int ret;
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct arm_smmu_device *smmu;
struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);

@@ -1380,7 +1380,7 @@ static int arm_smmu_add_device(struct device *dev)
{
struct arm_smmu_device *smmu;
struct arm_smmu_master_cfg *cfg;
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
int i, ret;

if (using_legacy_binding) {
@@ -1391,7 +1391,7 @@ static int arm_smmu_add_device(struct device *dev)
* will allocate/initialise a new one. Thus we need to update fwspec for
* later use.
*/
- fwspec = dev->iommu_fwspec;
+ fwspec = dev_iommu_fwspec_get(dev);
if (ret)
goto out_free;
} else if (fwspec && fwspec->ops == &arm_smmu_ops) {
@@ -1445,7 +1445,7 @@ static int arm_smmu_add_device(struct device *dev)

static void arm_smmu_remove_device(struct device *dev)
{
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct arm_smmu_master_cfg *cfg;
struct arm_smmu_device *smmu;

@@ -1465,7 +1465,7 @@ static void arm_smmu_remove_device(struct device *dev)

static struct iommu_group *arm_smmu_device_group(struct device *dev)
{
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct arm_smmu_device *smmu = fwspec_smmu(fwspec);
struct iommu_group *group = NULL;
int i, idx;
--
2.17.1