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iommu/ipmmu-vmsa: Use helper functions to access dev->iommu_fwspec 

Use the new helpers dev_iommu_fwspec_get()/set() to access
the dev->iommu_fwspec pointer. This makes it easier to move
that pointer later into another struct.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel 2018-11-29 14:01:00 +01:00
parent 98cc4f7196
commit df90365580
1 changed files with 8 additions and 4 deletions
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12
drivers/iommu/ipmmu-vmsa.c
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@ -82,7 +82,9 @@ static struct ipmmu_vmsa_domain *to_vmsa_domain(struct iommu_domain *dom)
static struct ipmmu_vmsa_device *to_ipmmu(struct device *dev)
{
return dev->iommu_fwspec ? dev->iommu_fwspec->iommu_priv : NULL;
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
return fwspec ? fwspec->iommu_priv : NULL;
}
#define TLB_LOOP_TIMEOUT 100 /* 100us */
@ -641,7 +643,7 @@ static void ipmmu_domain_free(struct iommu_domain *io_domain)
static int ipmmu_attach_device(struct iommu_domain *io_domain,
struct device *dev)
{
struct iommu_fwspec *fwspec = dev->iommu_fwspec;
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct ipmmu_vmsa_device *mmu = to_ipmmu(dev);
struct ipmmu_vmsa_domain *domain = to_vmsa_domain(io_domain);
unsigned int i;
@ -690,7 +692,7 @@ static int ipmmu_attach_device(struct iommu_domain *io_domain,
static void ipmmu_detach_device(struct iommu_domain *io_domain,
struct device *dev)
{
struct iommu_fwspec *fwspec = dev->iommu_fwspec;
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct ipmmu_vmsa_domain *domain = to_vmsa_domain(io_domain);
unsigned int i;
@ -742,13 +744,15 @@ static phys_addr_t ipmmu_iova_to_phys(struct iommu_domain *io_domain,
static int ipmmu_init_platform_device(struct device *dev,
struct of_phandle_args *args)
{
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct platform_device *ipmmu_pdev;
ipmmu_pdev = of_find_device_by_node(args->np);
if (!ipmmu_pdev)
return -ENODEV;
dev->iommu_fwspec->iommu_priv = platform_get_drvdata(ipmmu_pdev);
fwspec->iommu_priv = platform_get_drvdata(ipmmu_pdev);
return 0;
}