ACPI/PCI: PCI MSI _OSC support capabilities called when root bridge added

[mirror_ubuntu-focal-kernel.git] / drivers / acpi / pci_root.c

diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 9fe026b1c9d02f2893b0192a7650703dfeeac03b..5b38a026d1220113aec9c88cbb08f325537012d3 100644 (file)
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -350,6 +350,8 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
        if (pcie_aspm_enabled())
                flags |= OSC_ACTIVE_STATE_PWR_SUPPORT |
                        OSC_CLOCK_PWR_CAPABILITY_SUPPORT;
+       if (pci_msi_enabled())
+               flags |= OSC_MSI_SUPPORT;
        if (flags != base_flags)
                pci_acpi_osc_support(device->handle, flags);