drivers/misc/phantom.c

340 	struct phantom_device *pht;
366 	pht = kzalloc(sizeof(*pht), GFP_KERNEL);
367 	if (pht == NULL) {
372 	pht->caddr = pci_iomap(pdev, 0, 0);
373 	if (pht->caddr == NULL) {
377 	pht->iaddr = pci_iomap(pdev, 2, 0);
378 	if (pht->iaddr == NULL) {
382 	pht->oaddr = pci_iomap(pdev, 3, 0);
383 	if (pht->oaddr == NULL) {
388 	mutex_init(&pht->open_lock);
389 	spin_lock_init(&pht->regs_lock);
390 	init_waitqueue_head(&pht->wait);
391 	cdev_init(&pht->cdev, &phantom_file_ops);
392 	pht->cdev.owner = THIS_MODULE;
394 	iowrite32(0, pht->caddr + PHN_IRQCTL);
395 	ioread32(pht->caddr + PHN_IRQCTL); /* PCI posting */
397 			IRQF_SHARED, "phantom", pht);
403 	retval = cdev_add(&pht->cdev, MKDEV(phantom_major, minor), 1);
414 	pci_set_drvdata(pdev, pht);
418 	free_irq(pdev->irq, pht);
420 	pci_iounmap(pdev, pht->oaddr);
422 	pci_iounmap(pdev, pht->iaddr);
424 	pci_iounmap(pdev, pht->caddr);
426 	kfree(pht);
439 	struct phantom_device *pht = pci_get_drvdata(pdev);
440 	unsigned int minor = MINOR(pht->cdev.dev);
444 	cdev_del(&pht->cdev);
446 	iowrite32(0, pht->caddr + PHN_IRQCTL);
447 	ioread32(pht->caddr + PHN_IRQCTL); /* PCI posting */
448 	free_irq(pdev->irq, pht);
450 	pci_iounmap(pdev, pht->oaddr);
451 	pci_iounmap(pdev, pht->iaddr);
452 	pci_iounmap(pdev, pht->caddr);
454 	kfree(pht);