On Wednesday, March 28, 2018 3:47:18 PM CEST Arnd Bergmann wrote:
> The power management code in pci-driver.c is a maze of #ifdefs, and
> the newly added pcie_pme_root_status_cleanup function ended up in the
> wrong one of them, causing a harmless warning in some configurations:
>
> drivers/pci/pci-driver.c:527:13: error: 'pcie_pme_root_status_cleanup'
> defined but not used [-Werror=unused-function]
> static void pcie_pme_root_status_cleanup(struct pci_dev *pci_dev)
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> This moves the definition into the correct #ifdef section.
>
> Fixes: 6c4dfc1389e1 ("PCI/PM: Clear PCIe PME Status bit in core, not PCIe
> port driver")
> Signed-off-by: Arnd Bergmann <[email protected]>
> ---
> drivers/pci/pci-driver.c | 25 ++++++++++++-------------
> 1 file changed, 12 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
> index b9bca74e9eff..6ace47099fc5 100644
> --- a/drivers/pci/pci-driver.c
> +++ b/drivers/pci/pci-driver.c
> @@ -524,19 +524,6 @@ static void pci_pm_default_resume_early(struct pci_dev
> *pci_dev)
> pci_fixup_device(pci_fixup_resume_early, pci_dev);
> }
>
> -static void pcie_pme_root_status_cleanup(struct pci_dev *pci_dev)
> -{
> - /*
> - * Some BIOSes forget to clear Root PME Status bits after system
> - * wakeup, which breaks ACPI-based runtime wakeup on PCI Express.
> - * Clear those bits now just in case (shouldn't hurt).
> - */
> - if (pci_is_pcie(pci_dev) &&
> - (pci_pcie_type(pci_dev) == PCI_EXP_TYPE_ROOT_PORT ||
> - pci_pcie_type(pci_dev) == PCI_EXP_TYPE_RC_EC))
> - pcie_clear_root_pme_status(pci_dev);
> -}
> -
> /*
> * Default "suspend" method for devices that have no driver provided suspend,
> * or not even a driver at all (second part).
> @@ -726,6 +713,18 @@ static void pci_pm_complete(struct device *dev)
> #endif /* !CONFIG_PM_SLEEP */
>
> #ifdef CONFIG_SUSPEND
> +static void pcie_pme_root_status_cleanup(struct pci_dev *pci_dev)
> +{
> + /*
> + * Some BIOSes forget to clear Root PME Status bits after system
> + * wakeup, which breaks ACPI-based runtime wakeup on PCI Express.
> + * Clear those bits now just in case (shouldn't hurt).
> + */
> + if (pci_is_pcie(pci_dev) &&
> + (pci_pcie_type(pci_dev) == PCI_EXP_TYPE_ROOT_PORT ||
> + pci_pcie_type(pci_dev) == PCI_EXP_TYPE_RC_EC))
> + pcie_clear_root_pme_status(pci_dev);
> +}
>
> static int pci_pm_suspend(struct device *dev)
> {
>
Reviewed-by: Rafael J. Wysocki <[email protected]>
