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struct device の iommu_group を変更する関数
/**
* iommu_group_get - Return the group for a device and increment reference
* @dev: get the group that this device belongs to
*
* This function is called by iommu drivers and users to get the group
* for the specified device. If found, the group is returned and the group
* reference in incremented, else NULL.
*/
struct iommu_group *iommu_group_get(struct device *dev)
{
struct iommu_group *group = dev->iommu_group;
if (group)
kobject_get(group->devices_kobj);
return group; } EXPORT_SYMBOL_GPL(iommu_group_get);
static inline struct iommu_group *iommu_group_get(struct device *dev)
{
return NULL;
}
