omap mailbox: fix empty struct device for omap_mbox
Since "mbox->dev" doesn't exist and isn't created either at registration, this patch will create "struct device", which belongs to "omap-mailbox" class and set this pointer for the member of "struct omap_mbox". Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
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94fc58c6da
commit
f48cca8770
2 changed files with 33 additions and 34 deletions
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@ -53,7 +53,7 @@ struct omap_mbox {
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mbox_msg_t seq_snd, seq_rcv;
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struct device dev;
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struct device *dev;
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struct omap_mbox *next;
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void *priv;
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@ -67,7 +67,7 @@ void omap_mbox_init_seq(struct omap_mbox *);
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struct omap_mbox *omap_mbox_get(const char *);
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void omap_mbox_put(struct omap_mbox *);
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int omap_mbox_register(struct omap_mbox *);
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int omap_mbox_register(struct device *parent, struct omap_mbox *);
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int omap_mbox_unregister(struct omap_mbox *);
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#endif /* MAILBOX_H */
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@ -1,10 +1,9 @@
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/*
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* OMAP mailbox driver
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*
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* Copyright (C) 2006 Nokia Corporation. All rights reserved.
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* Copyright (C) 2006-2009 Nokia Corporation. All rights reserved.
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*
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* Contact: Toshihiro Kobayashi <toshihiro.kobayashi@nokia.com>
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* Restructured by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
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* Contact: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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@ -136,7 +135,7 @@ static void mbox_rx_work(struct work_struct *work)
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unsigned long flags;
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if (mbox->rxq->callback == NULL) {
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sysfs_notify(&mbox->dev.kobj, NULL, "mbox");
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sysfs_notify(&mbox->dev->kobj, NULL, "mbox");
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return;
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}
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@ -204,7 +203,7 @@ static void __mbox_rx_interrupt(struct omap_mbox *mbox)
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/* no more messages in the fifo. clear IRQ source. */
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ack_mbox_irq(mbox, IRQ_RX);
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enable_mbox_irq(mbox, IRQ_RX);
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nomem:
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nomem:
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schedule_work(&mbox->rxq->work);
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}
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@ -286,7 +285,7 @@ static ssize_t mbox_show(struct class *class, char *buf)
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static CLASS_ATTR(mbox, S_IRUGO, mbox_show, NULL);
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static struct class omap_mbox_class = {
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.name = "omap_mbox",
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.name = "omap-mailbox",
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};
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static struct omap_mbox_queue *mbox_queue_alloc(struct omap_mbox *mbox,
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@ -333,21 +332,6 @@ static int omap_mbox_init(struct omap_mbox *mbox)
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return ret;
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}
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mbox->dev.class = &omap_mbox_class;
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dev_set_name(&mbox->dev, "%s", mbox->name);
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dev_set_drvdata(&mbox->dev, mbox);
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ret = device_register(&mbox->dev);
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if (unlikely(ret))
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goto fail_device_reg;
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ret = device_create_file(&mbox->dev, &dev_attr_mbox);
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if (unlikely(ret)) {
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printk(KERN_ERR
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"device_create_file failed: %d\n", ret);
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goto fail_create_mbox;
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}
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ret = request_irq(mbox->irq, mbox_interrupt, IRQF_DISABLED,
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mbox->name, mbox);
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if (unlikely(ret)) {
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@ -377,10 +361,6 @@ static int omap_mbox_init(struct omap_mbox *mbox)
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fail_alloc_txq:
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free_irq(mbox->irq, mbox);
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fail_request_irq:
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device_remove_file(&mbox->dev, &dev_attr_mbox);
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fail_create_mbox:
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device_unregister(&mbox->dev);
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fail_device_reg:
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if (unlikely(mbox->ops->shutdown))
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mbox->ops->shutdown(mbox);
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@ -393,8 +373,6 @@ static void omap_mbox_fini(struct omap_mbox *mbox)
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mbox_queue_free(mbox->rxq);
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free_irq(mbox->irq, mbox);
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device_remove_file(&mbox->dev, &dev_attr_mbox);
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class_unregister(&omap_mbox_class);
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if (unlikely(mbox->ops->shutdown))
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mbox->ops->shutdown(mbox);
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@ -440,7 +418,7 @@ void omap_mbox_put(struct omap_mbox *mbox)
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}
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EXPORT_SYMBOL(omap_mbox_put);
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int omap_mbox_register(struct omap_mbox *mbox)
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int omap_mbox_register(struct device *parent, struct omap_mbox *mbox)
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{
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int ret = 0;
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struct omap_mbox **tmp;
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@ -450,14 +428,31 @@ int omap_mbox_register(struct omap_mbox *mbox)
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if (mbox->next)
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return -EBUSY;
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mbox->dev = device_create(&omap_mbox_class,
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parent, 0, mbox, "%s", mbox->name);
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if (IS_ERR(mbox->dev))
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return PTR_ERR(mbox->dev);
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ret = device_create_file(mbox->dev, &dev_attr_mbox);
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if (ret)
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goto err_sysfs;
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write_lock(&mboxes_lock);
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tmp = find_mboxes(mbox->name);
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if (*tmp)
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if (*tmp) {
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ret = -EBUSY;
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else
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*tmp = mbox;
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write_unlock(&mboxes_lock);
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goto err_find;
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}
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*tmp = mbox;
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write_unlock(&mboxes_lock);
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return 0;
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err_find:
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device_remove_file(mbox->dev, &dev_attr_mbox);
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err_sysfs:
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device_unregister(mbox->dev);
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return ret;
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}
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EXPORT_SYMBOL(omap_mbox_register);
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@ -473,6 +468,8 @@ int omap_mbox_unregister(struct omap_mbox *mbox)
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*tmp = mbox->next;
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mbox->next = NULL;
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write_unlock(&mboxes_lock);
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device_remove_file(mbox->dev, &dev_attr_mbox);
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device_unregister(mbox->dev);
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return 0;
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}
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tmp = &(*tmp)->next;
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@ -501,4 +498,6 @@ static void __exit omap_mbox_class_exit(void)
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subsys_initcall(omap_mbox_class_init);
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module_exit(omap_mbox_class_exit);
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MODULE_LICENSE("GPL");
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MODULE_LICENSE("GPL v2");
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MODULE_DESCRIPTION("omap mailbox: interrupt driven messaging");
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MODULE_AUTHOR("Toshihiro Kobayashi and Hiroshi DOYU");
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