Release 4.11 drivers/fsi/fsi-core.c

/*
 * FSI core driver
 *
 * Copyright (C) IBM Corporation 2016
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <linux/device.h>
#include <linux/fsi.h>
#include <linux/module.h>

/* FSI core & Linux bus type definitions */



static int fsi_bus_match(struct device *dev, struct device_driver *drv)
{
	struct fsi_device *fsi_dev = to_fsi_dev(dev);
	struct fsi_driver *fsi_drv = to_fsi_drv(drv);
	const struct fsi_device_id *id;

	if (!fsi_drv->id_table)
		return 0;

	for (id = fsi_drv->id_table; id->engine_type; id++) {
		if (id->engine_type != fsi_dev->engine_type)
			continue;
		if (id->version == FSI_VERSION_ANY ||
				id->version == fsi_dev->version)
			return 1;
	}

	return 0;
}

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struct bus_type fsi_bus_type = {
	.name		= "fsi",
	.match		= fsi_bus_match,
};

EXPORT_SYMBOL_GPL(fsi_bus_type);



static int fsi_init(void)
{
	return bus_register(&fsi_bus_type);
}

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static void fsi_exit(void)
{
	bus_unregister(&fsi_bus_type);
}

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module_init(fsi_init);

module_exit(fsi_exit);
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Directory: drivers/fsi

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