1 files changed, 27 insertions, 34 deletions

diff --git a/drivers/misc/phantom.c b/drivers/misc/phantom.c
index 68b7c773d2cf..701db2c5859b 100644
--- a/drivers/misc/phantom.c
+++ b/drivers/misc/phantom.c
@@ -1,11 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  *  Copyright (C) 2005-2007 Jiri Slaby <jirislaby@gmail.com>
  *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
  *  You need a userspace library to cooperate with this driver. It (and other
  *  info) may be obtained here:
  *  http://www.fi.muni.cz/~xslaby/phantom.html
@@ -39,9 +35,12 @@
 #define PHB_NOT_OH		2
 
 static DEFINE_MUTEX(phantom_mutex);
-static struct class *phantom_class;
 static int phantom_major;
 
+static const struct class phantom_class = {
+	.name = "phantom",
+};
+
 struct phantom_device {
 	unsigned int opened;
 	void __iomem *caddr;
@@ -256,18 +255,18 @@ static int phantom_release(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static unsigned int phantom_poll(struct file *file, poll_table *wait)
+static __poll_t phantom_poll(struct file *file, poll_table *wait)
 {
 	struct phantom_device *dev = file->private_data;
-	unsigned int mask = 0;
+	__poll_t mask = 0;
 
 	pr_debug("phantom_poll: %d\n", atomic_read(&dev->counter));
 	poll_wait(file, &dev->wait, wait);
 
 	if (!(dev->status & PHB_RUNNING))
-		mask = POLLERR;
+		mask = EPOLLERR;
 	else if (atomic_read(&dev->counter))
-		mask = POLLIN | POLLRDNORM;
+		mask = EPOLLIN | EPOLLRDNORM;
 
 	pr_debug("phantom_poll end: %x/%d\n", mask, atomic_read(&dev->counter));
 
@@ -280,7 +279,6 @@ static const struct file_operations phantom_file_ops = {
 	.unlocked_ioctl = phantom_ioctl,
 	.compat_ioctl = phantom_compat_ioctl,
 	.poll = phantom_poll,
-	.llseek = no_llseek,
 };
 
 static irqreturn_t phantom_isr(int irq, void *data)
@@ -395,7 +393,7 @@ static int phantom_probe(struct pci_dev *pdev,
 	iowrite32(0, pht->caddr + PHN_IRQCTL);
 	ioread32(pht->caddr + PHN_IRQCTL); /* PCI posting */
 	retval = request_irq(pdev->irq, phantom_isr,
-			IRQF_SHARED | IRQF_DISABLED, "phantom", pht);
+			IRQF_SHARED, "phantom", pht);
 	if (retval) {
 		dev_err(&pdev->dev, "can't establish ISR\n");
 		goto err_unmo;
@@ -407,7 +405,7 @@ static int phantom_probe(struct pci_dev *pdev,
 		goto err_irq;
 	}
 
-	if (IS_ERR(device_create(phantom_class, &pdev->dev,
+	if (IS_ERR(device_create(&phantom_class, &pdev->dev,
 				 MKDEV(phantom_major, minor), NULL,
 				 "phantom%u", minor)))
 		dev_err(&pdev->dev, "can't create device\n");
@@ -440,7 +438,7 @@ static void phantom_remove(struct pci_dev *pdev)
 	struct phantom_device *pht = pci_get_drvdata(pdev);
 	unsigned int minor = MINOR(pht->cdev.dev);
 
-	device_destroy(phantom_class, MKDEV(phantom_major, minor));
+	device_destroy(&phantom_class, MKDEV(phantom_major, minor));
 
 	cdev_del(&pht->cdev);
 
@@ -461,31 +459,26 @@ static void phantom_remove(struct pci_dev *pdev)
 	pci_disable_device(pdev);
 }
 
-#ifdef CONFIG_PM
-static int phantom_suspend(struct pci_dev *pdev, pm_message_t state)
+static int __maybe_unused phantom_suspend(struct device *dev_d)
 {
-	struct phantom_device *dev = pci_get_drvdata(pdev);
+	struct phantom_device *dev = dev_get_drvdata(dev_d);
 
 	iowrite32(0, dev->caddr + PHN_IRQCTL);
 	ioread32(dev->caddr + PHN_IRQCTL); /* PCI posting */
 
-	synchronize_irq(pdev->irq);
+	synchronize_irq(to_pci_dev(dev_d)->irq);
 
 	return 0;
 }
 
-static int phantom_resume(struct pci_dev *pdev)
+static int __maybe_unused phantom_resume(struct device *dev_d)
 {
-	struct phantom_device *dev = pci_get_drvdata(pdev);
+	struct phantom_device *dev = dev_get_drvdata(dev_d);
 
 	iowrite32(0, dev->caddr + PHN_IRQCTL);
 
 	return 0;
 }
-#else
-#define phantom_suspend	NULL
-#define phantom_resume	NULL
-#endif
 
 static struct pci_device_id phantom_pci_tbl[] = {
 	{ .vendor = PCI_VENDOR_ID_PLX, .device = PCI_DEVICE_ID_PLX_9050,
@@ -495,13 +488,14 @@ static struct pci_device_id phantom_pci_tbl[] = {
 };
 MODULE_DEVICE_TABLE(pci, phantom_pci_tbl);
 
+static SIMPLE_DEV_PM_OPS(phantom_pm_ops, phantom_suspend, phantom_resume);
+
 static struct pci_driver phantom_pci_driver = {
 	.name = "phantom",
 	.id_table = phantom_pci_tbl,
 	.probe = phantom_probe,
 	.remove = phantom_remove,
-	.suspend = phantom_suspend,
-	.resume = phantom_resume
+	.driver.pm = &phantom_pm_ops,
 };
 
 static CLASS_ATTR_STRING(version, 0444, PHANTOM_VERSION);
@@ -511,13 +505,12 @@ static int __init phantom_init(void)
 	int retval;
 	dev_t dev;
 
-	phantom_class = class_create(THIS_MODULE, "phantom");
-	if (IS_ERR(phantom_class)) {
-		retval = PTR_ERR(phantom_class);
+	retval = class_register(&phantom_class);
+	if (retval) {
 		printk(KERN_ERR "phantom: can't register phantom class\n");
 		goto err;
 	}
-	retval = class_create_file(phantom_class, &class_attr_version.attr);
+	retval = class_create_file(&phantom_class, &class_attr_version.attr);
 	if (retval) {
 		printk(KERN_ERR "phantom: can't create sysfs version file\n");
 		goto err_class;
@@ -543,9 +536,9 @@ static int __init phantom_init(void)
 err_unchr:
 	unregister_chrdev_region(dev, PHANTOM_MAX_MINORS);
 err_attr:
-	class_remove_file(phantom_class, &class_attr_version.attr);
+	class_remove_file(&phantom_class, &class_attr_version.attr);
 err_class:
-	class_destroy(phantom_class);
+	class_unregister(&phantom_class);
 err:
 	return retval;
 }
@@ -556,8 +549,8 @@ static void __exit phantom_exit(void)
 
 	unregister_chrdev_region(MKDEV(phantom_major, 0), PHANTOM_MAX_MINORS);
 
-	class_remove_file(phantom_class, &class_attr_version.attr);
-	class_destroy(phantom_class);
+	class_remove_file(&phantom_class, &class_attr_version.attr);
+	class_unregister(&phantom_class);
 
 	pr_debug("phantom: module successfully removed\n");
 }