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misc/phantom.c: use generic power management

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With the support of generic PM callbacks, drivers no longer need to use
legacy .suspend() and .resume() in which they had to maintain PCI states
changes and device's power state themselves. All required operations are
done by PCI core.

Driver needs to do only device-specific operations.

Compile-tested only.

Signed-off-by: Vaibhav Gupta <vaibhavgupta40@gmail.com>
Link: https://lore.kernel.org/r/20200629081531.214734-5-vaibhavgupta40@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vaibhav Gupta 2020-06-29 13:45:30 +05:30 committed by Greg Kroah-Hartman
parent ff249c1c70
commit 6bbf52566b
1 changed files with 8 additions and 12 deletions
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20
drivers/misc/phantom.c
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@ -457,31 +457,26 @@ 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,
@ -491,13 +486,14 @@ 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);