[PATCH 2/9] ACPI/IORT: Use helper functions to access dev->iommu_fwspec

Joerg Roedel
2018-12-11T12:19:31Z

Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
drivers/acpi/arm64/iort.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c
index 70f4e80b9246..736381673638 100644
--- a/drivers/acpi/arm64/iort.c
+++ b/drivers/acpi/arm64/iort.c
@@ -779,7 +779,7 @@ static inline bool iort_iommu_driver_enabled(u8 type)
static struct acpi_iort_node *iort_get_msi_resv_iommu(struct device *dev)
{
struct acpi_iort_node *iommu;
- struct iommu_fwspec *fwspec = dev->iommu_fwspec;
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);

iommu = iort_get_iort_node(fwspec->iommu_fwnode);

@@ -794,9 +794,10 @@ static struct acpi_iort_node *iort_get_msi_resv_iommu(struct device *dev)
return NULL;
}

-static inline const struct iommu_ops *iort_fwspec_iommu_ops(
- struct iommu_fwspec *fwspec)
+static inline const struct iommu_ops *iort_fwspec_iommu_ops(struct device *dev)
{
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
+
return (fwspec && fwspec->ops) ? fwspec->ops : NULL;
}

@@ -824,6 +825,7 @@ static inline int iort_add_device_replay(const struct iommu_ops *ops,
*/
int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head)
{
+ struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct acpi_iort_its_group *its;
struct acpi_iort_node *iommu_node, *its_node = NULL;
int i, resv = 0;
@@ -841,9 +843,9 @@ int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head)
* a given PCI or named component may map IDs to.
*/

- for (i = 0; i < dev->iommu_fwspec->num_ids; i++) {
+ for (i = 0; i < fwspec->num_ids; i++) {
its_node = iort_node_map_id(iommu_node,
- dev->iommu_fwspec->ids[i],
+ fwspec->ids[i],
NULL, IORT_MSI_TYPE);
if (its_node)
break;
@@ -874,8 +876,7 @@ int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head)
return (resv == its->its_count) ? resv : -ENODEV;
}
#else
-static inline const struct iommu_ops *iort_fwspec_iommu_ops(
- struct iommu_fwspec *fwspec)
+static inline const struct iommu_ops *iort_fwspec_iommu_ops(struct device *dev);
{ return NULL; }
static inline int iort_add_device_replay(const struct iommu_ops *ops,
struct device *dev)
@@ -1045,7 +1046,7 @@ const struct iommu_ops *iort_iommu_configure(struct device *dev)
* If we already translated the fwspec there
* is nothing left to do, return the iommu_ops.
*/
- ops = iort_fwspec_iommu_ops(dev->iommu_fwspec);
+ ops = iort_fwspec_iommu_ops(dev);
if (ops)
return ops;

@@ -1084,7 +1085,7 @@ const struct iommu_ops *iort_iommu_configure(struct device *dev)
* add_device callback for dev, replay it to get things in order.
*/
if (!err) {
- ops = iort_fwspec_iommu_ops(dev->iommu_fwspec);
+ ops = iort_fwspec_iommu_ops(dev);
err = iort_add_device_replay(ops, dev);
}

--
2.17.1