/*
 * UWB Multi-interface Controller device management.
 *
 * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
 *
 * This file is released under the GNU GPL v2.
 */
#include <linux/kernel.h>
#include <linux/export.h>
#include <linux/slab.h>
#include <linux/uwb/umc.h>

static void umc_device_release(struct device *dev)
{
	struct umc_dev *umc = to_umc_dev(dev);

	kfree(umc);
}

/**
 * umc_device_create - allocate a child UMC device
 * @parent: parent of the new UMC device.
 * @n:      index of the new device.
 *
 * The new UMC device will have a bus ID of the parent with '-n'
 * appended.
 */
struct umc_dev *umc_device_create(struct device *parent, int n)
{
	struct umc_dev *umc;

	umc = kzalloc(sizeof(struct umc_dev), GFP_KERNEL);
	if (umc) {
		dev_set_name(&umc->dev, "%s-%d", dev_name(parent), n);
		umc->dev.parent  = parent;
		umc->dev.bus     = &umc_bus_type;
		umc->dev.release = umc_device_release;

		umc->dev.dma_mask = parent->dma_mask;
	}
	return umc;
}
EXPORT_SYMBOL_GPL(umc_device_create);

/**
 * umc_device_register - register a UMC device
 * @umc: pointer to the UMC device
 *
 * The memory resource for the UMC device is acquired and the device
 * registered with the system.
 */
int umc_device_register(struct umc_dev *umc)
{
	int err;

	err = request_resource(umc->resource.parent, &umc->resource);
	if (err < 0) {
		dev_err(&umc->dev, "can't allocate resource range %pR: %d\n",
			&umc->resource, err);
		goto error_request_resource;
	}

	err = device_register(&umc->dev);
	if (err < 0)
		goto error_device_register;
	return 0;

error_device_register:
	put_device(&umc->dev);
	release_resource(&umc->resource);
error_request_resource:
	return err;
}
EXPORT_SYMBOL_GPL(umc_device_register);

/**
 * umc_device_unregister - unregister a UMC device
 * @umc: pointer to the UMC device
 *
 * First we unregister the device, make sure the driver can do it's
 * resource release thing and then we try to release any left over
 * resources. We take a ref to the device, to make sure it doesn't
 * disappear under our feet.
 */
void umc_device_unregister(struct umc_dev *umc)
{
	struct device *dev;
	if (!umc)
		return;
	dev = get_device(&umc->dev);
	device_unregister(&umc->dev);
	release_resource(&umc->resource);
	put_device(dev);
}
EXPORT_SYMBOL_GPL(umc_device_unregister);
grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=fd62d9f5c575f0792f150109f1fd24a0d4b3f854'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?id=fd62d9f5c575f0792f150109f1fd24a0d4b3f854'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/x25?id=fd62d9f5c575f0792f150109f1fd24a0d4b3f854'>x25</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/x25/x25_subr.c?id=fd62d9f5c575f0792f150109f1fd24a0d4b3f854'>x25_subr.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/x25/x25_subr.c?id=fd62d9f5c575f0792f150109f1fd24a0d4b3f854&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>