Commit 408fec36 authored May 23, 2018 by Mika Westerberg Committed by Bjorn Helgaas May 23, 2018

PCI: pciehp: Request control of native hotplug only if supported



Currently we request control of native PCIe hotplug unconditionally.
Native PCIe hotplug events are handled by the pciehp driver, and if it is
not enabled those events will be lost.

Request control of native PCIe hotplug only if the pciehp driver is
enabled, so we will actually handle native PCIe hotplug events.

Suggested-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

parent 13c65840

drivers/acpi/pci_root.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -472,9 +472,11 @@ static void negotiate_os_control(struct acpi_pci_root root, int no_aspm)
		}

		control = OSC_PCI_EXPRESS_CAPABILITY_CONTROL
		\| OSC_PCI_EXPRESS_NATIVE_HP_CONTROL
		\| OSC_PCI_EXPRESS_PME_CONTROL;

		if (IS_ENABLED(CONFIG_HOTPLUG_PCI_PCIE))
		control \|= OSC_PCI_EXPRESS_NATIVE_HP_CONTROL;

		if (pci_aer_available()) {
		if (aer_acpi_firmware_first())
		dev_info(&device->dev,

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