b93931a61a
Move basic host class device handling to its own file for clarity. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
94 lines
1.9 KiB
C
94 lines
1.9 KiB
C
/*
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* linux/drivers/mmc/core/sysfs.c
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*
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* Copyright (C) 2003 Russell King, All Rights Reserved.
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* Copyright 2007 Pierre Ossman
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* MMC sysfs/driver model support.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/idr.h>
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#include <linux/workqueue.h>
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#include <linux/mmc/card.h>
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#include <linux/mmc/host.h>
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#include "bus.h"
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#include "host.h"
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#include "sysfs.h"
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int mmc_add_attrs(struct mmc_card *card, struct device_attribute *attrs)
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{
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int error = 0;
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int i;
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for (i = 0; attr_name(attrs[i]); i++) {
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error = device_create_file(&card->dev, &attrs[i]);
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if (error) {
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while (--i >= 0)
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device_remove_file(&card->dev, &attrs[i]);
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break;
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}
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}
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return error;
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}
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void mmc_remove_attrs(struct mmc_card *card, struct device_attribute *attrs)
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{
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int i;
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for (i = 0; attr_name(attrs[i]); i++)
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device_remove_file(&card->dev, &attrs[i]);
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}
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static struct workqueue_struct *workqueue;
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/*
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* Internal function. Schedule delayed work in the MMC work queue.
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*/
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int mmc_schedule_delayed_work(struct delayed_work *work, unsigned long delay)
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{
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return queue_delayed_work(workqueue, work, delay);
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}
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/*
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* Internal function. Flush all scheduled work from the MMC work queue.
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*/
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void mmc_flush_scheduled_work(void)
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{
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flush_workqueue(workqueue);
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}
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static int __init mmc_init(void)
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{
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int ret;
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workqueue = create_singlethread_workqueue("kmmcd");
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if (!workqueue)
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return -ENOMEM;
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ret = mmc_register_bus();
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if (ret == 0) {
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ret = mmc_register_host_class();
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if (ret)
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mmc_unregister_bus();
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}
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return ret;
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}
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static void __exit mmc_exit(void)
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{
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mmc_unregister_host_class();
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mmc_unregister_bus();
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destroy_workqueue(workqueue);
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}
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module_init(mmc_init);
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module_exit(mmc_exit);
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