This avoids a bigger trouble of moving the struct iommufd_device to the public header. Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx> Signed-off-by: Nicolin Chen <nicolinc@xxxxxxxxxx> --- include/linux/iommufd.h | 6 ++++++ drivers/iommu/iommufd/driver.c | 7 +++++++ 2 files changed, 13 insertions(+) diff --git a/include/linux/iommufd.h b/include/linux/iommufd.h index 559f274a26ea..2f4ec6e6df21 100644 --- a/include/linux/iommufd.h +++ b/include/linux/iommufd.h @@ -204,6 +204,7 @@ static inline int iommufd_vfio_compat_set_no_iommu(struct iommufd_ctx *ictx) struct iommufd_object *_iommufd_object_alloc(struct iommufd_ctx *ictx, size_t size, enum iommufd_object_type type); +struct device *vdev_to_dev(struct iommufd_vdevice *vdev); #else /* !CONFIG_IOMMUFD_DRIVER */ static inline struct iommufd_object * _iommufd_object_alloc(struct iommufd_ctx *ictx, size_t size, @@ -211,6 +212,11 @@ _iommufd_object_alloc(struct iommufd_ctx *ictx, size_t size, { return ERR_PTR(-EOPNOTSUPP); } + +static inline struct device *vdev_to_dev(struct iommufd_vdevice *vdev) +{ + return NULL; +} #endif /* CONFIG_IOMMUFD_DRIVER */ /* diff --git a/drivers/iommu/iommufd/driver.c b/drivers/iommu/iommufd/driver.c index c0876d3f91c7..a5d750d2cfaa 100644 --- a/drivers/iommu/iommufd/driver.c +++ b/drivers/iommu/iommufd/driver.c @@ -36,3 +36,10 @@ struct iommufd_object *_iommufd_object_alloc(struct iommufd_ctx *ictx, return ERR_PTR(rc); } EXPORT_SYMBOL_NS_GPL(_iommufd_object_alloc, IOMMUFD); + +/* Caller should xa_lock(&viommu->vdevs) to protect the return value */ +struct device *vdev_to_dev(struct iommufd_vdevice *vdev) +{ + return vdev ? vdev->idev->dev : NULL; +} +EXPORT_SYMBOL_NS_GPL(vdev_to_dev, IOMMUFD); -- 2.43.0