From: Bjorn Helgaas Date: Thu, 10 Oct 2019 21:54:36 +0000 (-0500) Subject: PCI/PM: Clear PCIe PME Status even for legacy power management X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ec6a75ef8e33fe33f963b916fd902c52a0be33ff;p=linux.git PCI/PM: Clear PCIe PME Status even for legacy power management Previously, pci_pm_resume_noirq() cleared the PME Status bit in the Root Status register only if the device had no driver or the driver did not implement legacy power management. It should clear PME Status regardless of what sort of power management the driver supports, so do this before checking for legacy power management. This affects Root Ports and Root Complex Event Collectors, for which the usual driver is the PCIe portdrv, which implements new power management, so this change is just on principle, not to fix any actual defects. Fixes: a39bd851dccf ("PCI/PM: Clear PCIe PME Status bit in core, not PCIe port driver") Link: https://lore.kernel.org/r/20191014230016.240912-4-helgaas@kernel.org Signed-off-by: Bjorn Helgaas Reviewed-by: Rafael J. Wysocki --- diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index d4ac8ce8c1f9f..0c3086793e4ec 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -941,12 +941,11 @@ static int pci_pm_resume_noirq(struct device *dev) pci_pm_default_resume_early(pci_dev); pci_fixup_device(pci_fixup_resume_early, pci_dev); + pcie_pme_root_status_cleanup(pci_dev); if (pci_has_legacy_pm_support(pci_dev)) return pci_legacy_resume_early(dev); - pcie_pme_root_status_cleanup(pci_dev); - if (drv && drv->pm && drv->pm->resume_noirq) error = drv->pm->resume_noirq(dev);