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vfio: Rearrange functions to get vfio_group from dev 

This patch rearranges functions to get vfio_group from device

Signed-off-by: Kirti Wankhede <kwankhede@nvidia.com>
Signed-off-by: Neo Jia <cjia@nvidia.com>
Reviewed-by: Jike Song <jike.song@intel.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Kirti Wankhede 2016-11-17 02:16:15 +05:30 committed by Alex Williamson
parent fa3da00cb8
commit 7ed3ea8a71
1 changed files with 16 additions and 7 deletions
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23
drivers/vfio/vfio.c
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@ -480,6 +480,21 @@ static struct vfio_group *vfio_group_get_from_minor(int minor)
return group;
}
static struct vfio_group *vfio_group_get_from_dev(struct device *dev)
{
struct iommu_group *iommu_group;
struct vfio_group *group;
iommu_group = iommu_group_get(dev);
if (!iommu_group)
return NULL;
group = vfio_group_get_from_iommu(iommu_group);
iommu_group_put(iommu_group);
return group;
}
/**
* Device objects - create, release, get, put, search
*/
@ -811,16 +826,10 @@ EXPORT_SYMBOL_GPL(vfio_add_group_dev);
*/
struct vfio_device *vfio_device_get_from_dev(struct device *dev)
{
struct iommu_group *iommu_group;
struct vfio_group *group;
struct vfio_device *device;
iommu_group = iommu_group_get(dev);
if (!iommu_group)
return NULL;
group = vfio_group_get_from_iommu(iommu_group);
iommu_group_put(iommu_group);
group = vfio_group_get_from_dev(dev);
if (!group)
return NULL;