From 7a46931ba9a25ce73761f4015f004229df44ef13 Mon Sep 17 00:00:00 2001 From: Vaibhav Gupta Date: Mon, 29 Jun 2020 13:58:19 +0530 Subject: [PATCH] staging: vt6655/device_main.c: use generic power management Drivers should not use legacy power management as they have to manage power states and related operations, for the device, themselves. This driver was handling them with the help of PCI helper functions like pci_save/restore_state(), pci_enable/disable_device(), etc. With generic PM, all essentials will be handled by the PCI core. Driver needs to do only device-specific operations. The driver was also using pci_enable_wake(...,..., 0) to disable wake. Use device_wakeup_disable() instead. Compile-tested only. Signed-off-by: Vaibhav Gupta Link: https://lore.kernel.org/r/20200629082819.216405-5-vaibhavgupta40@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/staging/vt6655/device_main.c | 25 +++++++------------------ 1 file changed, 7 insertions(+), 18 deletions(-) diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/device_main.c index 41cbec4134b0..76de1fd568eb 100644 --- a/drivers/staging/vt6655/device_main.c +++ b/drivers/staging/vt6655/device_main.c @@ -1766,48 +1766,37 @@ vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent) /*------------------------------------------------------------------*/ -#ifdef CONFIG_PM -static int vt6655_suspend(struct pci_dev *pcid, pm_message_t state) +static int __maybe_unused vt6655_suspend(struct device *dev_d) { - struct vnt_private *priv = pci_get_drvdata(pcid); + struct vnt_private *priv = dev_get_drvdata(dev_d); unsigned long flags; spin_lock_irqsave(&priv->lock, flags); - pci_save_state(pcid); - MACbShutdown(priv); - pci_disable_device(pcid); - spin_unlock_irqrestore(&priv->lock, flags); - pci_set_power_state(pcid, pci_choose_state(pcid, state)); - return 0; } -static int vt6655_resume(struct pci_dev *pcid) +static int __maybe_unused vt6655_resume(struct device *dev_d) { - pci_set_power_state(pcid, PCI_D0); - pci_enable_wake(pcid, PCI_D0, 0); - pci_restore_state(pcid); + device_wakeup_disable(dev_d); return 0; } -#endif MODULE_DEVICE_TABLE(pci, vt6655_pci_id_table); +static SIMPLE_DEV_PM_OPS(vt6655_pm_ops, vt6655_suspend, vt6655_resume); + static struct pci_driver device_driver = { .name = DEVICE_NAME, .id_table = vt6655_pci_id_table, .probe = vt6655_probe, .remove = vt6655_remove, -#ifdef CONFIG_PM - .suspend = vt6655_suspend, - .resume = vt6655_resume, -#endif + .driver.pm = &vt6655_pm_ops, }; module_pci_driver(device_driver);