diff options
Diffstat (limited to 'drivers/iommu/iommu.c')
| -rw-r--r-- | drivers/iommu/iommu.c | 27 |
1 files changed, 4 insertions, 23 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 1575aaa36c94..64419c88727e 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -25,16 +25,6 @@ #include <linux/errno.h> #include <linux/iommu.h> -static struct iommu_ops *iommu_ops; - -void register_iommu(struct iommu_ops *ops) -{ - if (iommu_ops) - BUG(); - - iommu_ops = ops; -} - static void iommu_bus_init(struct bus_type *bus, struct iommu_ops *ops) { } @@ -68,34 +58,25 @@ EXPORT_SYMBOL_GPL(bus_set_iommu); bool iommu_present(struct bus_type *bus) { - if (bus->iommu_ops != NULL) - return true; - else - return iommu_ops != NULL; + return bus->iommu_ops != NULL; } EXPORT_SYMBOL_GPL(iommu_present); struct iommu_domain *iommu_domain_alloc(struct bus_type *bus) { struct iommu_domain *domain; - struct iommu_ops *ops; int ret; - if (bus->iommu_ops) - ops = bus->iommu_ops; - else - ops = iommu_ops; - - if (ops == NULL) + if (bus == NULL || bus->iommu_ops == NULL) return NULL; domain = kmalloc(sizeof(*domain), GFP_KERNEL); if (!domain) return NULL; - domain->ops = ops; + domain->ops = bus->iommu_ops; - ret = iommu_ops->domain_init(domain); + ret = domain->ops->domain_init(domain); if (ret) goto out_free; |