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vfio/mdev: remove mdev_parent_dev

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Just open code the dereferences in the only user.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Kirti Wankhede <kwankhede@nvidia.com>
Link: https://lore.kernel.org/r/20220923092652.100656-9-hch@lst.de
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Christoph Hellwig 2022-09-23 11:26:46 +02:00 committed by Alex Williamson
parent 2815fe149f
commit 062e720cd2
4 changed files with 1 additions and 11 deletions
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3
Documentation/driver-api/vfio-mediated-device.rst
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@ -200,9 +200,6 @@ Directories and files under the sysfs for Each Physical Device
sprintf(buf, "%s-%s", dev_driver_string(parent->dev), group->name);
(or using mdev_parent_dev(mdev) to arrive at the parent device outside
of the core mdev code)
* device_api
This attribute should show which device API is being created, for example,

2
drivers/gpu/drm/i915/gvt/kvmgt.c
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@ -1488,7 +1488,7 @@ static int intel_vgpu_init_dev(struct vfio_device *vfio_dev)
struct intel_vgpu_type *type =
container_of(mdev->type, struct intel_vgpu_type, type);
vgpu->gvt = kdev_to_i915(mdev_parent_dev(mdev))->gvt;
vgpu->gvt = kdev_to_i915(mdev->type->parent->dev)->gvt;
return intel_gvt_create_vgpu(vgpu, type->conf);
}

6
drivers/vfio/mdev/mdev_core.c
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@ -23,12 +23,6 @@ static struct class_compat *mdev_bus_compat_class;
static LIST_HEAD(mdev_list);
static DEFINE_MUTEX(mdev_list_lock);
struct device *mdev_parent_dev(struct mdev_device *mdev)
{
return mdev->type->parent->dev;
}
EXPORT_SYMBOL(mdev_parent_dev);
/*
* Used in mdev_type_attribute sysfs functions to return the parent struct
* device

1
include/linux/mdev.h
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@ -95,7 +95,6 @@ void mdev_unregister_parent(struct mdev_parent *parent);
int mdev_register_driver(struct mdev_driver *drv);
void mdev_unregister_driver(struct mdev_driver *drv);
struct device *mdev_parent_dev(struct mdev_device *mdev);
static inline struct device *mdev_dev(struct mdev_device *mdev)
{
return &mdev->dev;