Re: [PATCH 4/7] PCI/PM: Run resume fixups before disabling wakeup events

Rafael J. Wysocki
2019-10-15T17:21:44Z

On Tuesday, October 15, 2019 1:00:13 AM CEST Bjorn Helgaas wrote:
> From: Bjorn Helgaas <bhelgaas@google.com>
>
> pci_pm_resume() and pci_pm_restore() call pci_pm_default_resume(), which
> runs resume fixups before disabling wakeup events:
>
> static void pci_pm_default_resume(struct pci_dev *pci_dev)
> {
> pci_fixup_device(pci_fixup_resume, pci_dev);
> pci_enable_wake(pci_dev, PCI_D0, false);
> }
>
> pci_pm_runtime_resume() does both of these, but in the opposite order:
>
> pci_enable_wake(pci_dev, PCI_D0, false);
> pci_fixup_device(pci_fixup_resume, pci_dev);
>
> We should always use the same ordering unless there's a reason to do
> otherwise.

Right.

> Change pci_pm_runtime_resume() to call pci_pm_default_resume()
> instead of open-coding this, so the fixups are always done before disabling
> wakeup events.
>
> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

No concerns about this change, so

Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

> ---
> drivers/pci/pci-driver.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
> index 0c3086793e4e..55acb658273f 100644
> --- a/drivers/pci/pci-driver.c
> +++ b/drivers/pci/pci-driver.c
> @@ -1345,8 +1345,7 @@ static int pci_pm_runtime_resume(struct device *dev)
> return 0;
>
> pci_fixup_device(pci_fixup_resume_early, pci_dev);
> - pci_enable_wake(pci_dev, PCI_D0, false);
> - pci_fixup_device(pci_fixup_resume, pci_dev);
> + pci_pm_default_resume(pci_dev);
>
> if (pm && pm->runtime_resume)
> rc = pm->runtime_resume(dev);
>