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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576// SPDX-License-Identifier: GPL-2.0-only/* * MDEV driver * * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved. * Author: Neo Jia <cjia@nvidia.com> * Kirti Wankhede <kwankhede@nvidia.com> */
#include <linux/iommu.h>#include <linux/mdev.h>
#include "mdev_private.h"
static int mdev_probe(struct device *dev){ struct mdev_driver *drv = container_of(dev->driver, struct mdev_driver, driver);
if (!drv->probe) return 0; return drv->probe(to_mdev_device(dev));}
static void mdev_remove(struct device *dev){ struct mdev_driver *drv = container_of(dev->driver, struct mdev_driver, driver);
if (drv->remove) drv->remove(to_mdev_device(dev));}
static int mdev_match(struct device *dev, const struct device_driver *drv){ /* * No drivers automatically match. Drivers are only bound by explicit * device_driver_attach() */ return 0;}
const struct bus_type mdev_bus_type = { .name = "mdev", .probe = mdev_probe, .remove = mdev_remove, .match = mdev_match,};
/** * mdev_register_driver - register a new MDEV driver * @drv: the driver to register * * Returns a negative value on error, otherwise 0. **/int mdev_register_driver(struct mdev_driver *drv){ if (!drv->device_api) return -EINVAL;
/* initialize common driver fields */ drv->driver.bus = &mdev_bus_type; return driver_register(&drv->driver);}EXPORT_SYMBOL(mdev_register_driver);
/* * mdev_unregister_driver - unregister MDEV driver * @drv: the driver to unregister */void mdev_unregister_driver(struct mdev_driver *drv){ driver_unregister(&drv->driver);}EXPORT_SYMBOL(mdev_unregister_driver);