/**
* mei_remove - Device Removal Routine
*
* @pdev: PCI device structure
*
* mei_remove is called by the PCI subsystem to alert the driver
* that it should release a PCI device.
*/
static void __devexit mei_remove(struct pci_dev *pdev)
{
struct mei_device *dev;
if (mei_device != pdev)
return;
dev = pci_get_drvdata(pdev);
if (!dev)
return;
mutex_lock(&dev->device_lock);
mei_wd_stop(dev, false);
mei_device = NULL;
if (dev->iamthif_cl.state == MEI_FILE_CONNECTED) {
dev->iamthif_cl.state = MEI_FILE_DISCONNECTING;
mei_disconnect_host_client(dev, &dev->iamthif_cl);
}
if (dev->wd_cl.state == MEI_FILE_CONNECTED) {
dev->wd_cl.state = MEI_FILE_DISCONNECTING;
mei_disconnect_host_client(dev, &dev->wd_cl);
}
/* remove entry if already in list */
dev_dbg(&pdev->dev, "list del iamthif and wd file list.\n");
mei_remove_client_from_file_list(dev, dev->wd_cl.host_client_id);
mei_remove_client_from_file_list(dev, dev->iamthif_cl.host_client_id);
dev->iamthif_current_cb = NULL;
dev->num_mei_me_clients = 0;
mutex_unlock(&dev->device_lock);
flush_scheduled_work();
/* disable interrupts */
mei_disable_interrupts(dev);
free_irq(pdev->irq, dev);
pci_set_drvdata(pdev, NULL);
if (dev->mem_addr)
pci_iounmap(pdev, dev->mem_addr);
kfree(dev);
pci_release_regions(pdev);
pci_disable_device(pdev);
}
/*
* mei_wd_ops_stop - wd stop command from the watchdog core.
*
* @wd_dev - watchdog device struct
*
* returns 0 if success, negative errno code for failure
*/
static int mei_wd_ops_stop(struct watchdog_device *wd_dev)
{
struct mei_device *dev;
dev = pci_get_drvdata(mei_device);
if (!dev)
return -ENODEV;
mutex_lock(&dev->device_lock);
mei_wd_stop(dev, false);
mutex_unlock(&dev->device_lock);
return 0;
}
void mei_stop(struct mei_device *dev)
{
dev_dbg(&dev->pdev->dev, "stopping the device.\n");
mutex_lock(&dev->device_lock);
cancel_delayed_work(&dev->timer_work);
mei_wd_stop(dev);
dev->dev_state = MEI_DEV_POWER_DOWN;
mei_reset(dev, 0);
mutex_unlock(&dev->device_lock);
flush_scheduled_work();
}
void mei_stop(struct mei_device *dev)
{
dev_dbg(&dev->pdev->dev, "stopping the device.\n");
mei_cancel_work(dev);
mei_nfc_host_exit(dev);
mutex_lock(&dev->device_lock);
mei_wd_stop(dev);
dev->dev_state = MEI_DEV_POWER_DOWN;
mei_reset(dev);
mutex_unlock(&dev->device_lock);
mei_watchdog_unregister(dev);
}
void mei_stop(struct mei_device *dev)
{
dev_dbg(&dev->pdev->dev, "stopping the device.\n");
mei_cancel_work(dev);
mei_nfc_host_exit(dev);
mutex_lock(&dev->device_lock);
mei_wd_stop(dev);
dev->dev_state = MEI_DEV_POWER_DOWN;
mei_reset(dev);
/* move device to disabled state unconditionally */
dev->dev_state = MEI_DEV_DISABLED;
mutex_unlock(&dev->device_lock);
mei_watchdog_unregister(dev);
}
