diff options
| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2018-05-24 01:40:23 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2018-06-02 08:18:28 +0300 |
| commit | 1df81a6d6e01ff3f351c614c5bc35b49847e1dc5 (patch) | |
| tree | da574d3095c83692bccf5ae669415ece176ea8a2 /drivers/acpi/pci_root.c | |
| parent | 82280f7af729125b89d47cb420cac0a761664b32 (diff) | |
| download | linux-1df81a6d6e01ff3f351c614c5bc35b49847e1dc5.tar.xz | |
PCI: shpchp: Request SHPC control via _OSC when adding host bridge
The SHPC driver now must be builtin (it cannot be a module). If it is
present, request SHPC control immediately when adding the ACPI host bridge.
This is similar to how we handle native PCIe hotplug via pciehp.
Suggested-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
[bhelgaas: split to separate patch]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/pci_root.c')
| -rw-r--r-- | drivers/acpi/pci_root.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 032a578da5d4..d9b8407ce4e8 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -477,6 +477,9 @@ static void negotiate_os_control(struct acpi_pci_root *root, int *no_aspm) if (IS_ENABLED(CONFIG_HOTPLUG_PCI_PCIE)) control |= OSC_PCI_EXPRESS_NATIVE_HP_CONTROL; + if (IS_ENABLED(CONFIG_HOTPLUG_PCI_SHPC)) + control |= OSC_PCI_SHPC_NATIVE_HP_CONTROL; + if (pci_aer_available()) { if (aer_acpi_firmware_first()) dev_info(&device->dev, @@ -903,6 +906,8 @@ struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root, host_bridge = to_pci_host_bridge(bus->bridge); if (!(root->osc_control_set & OSC_PCI_EXPRESS_NATIVE_HP_CONTROL)) host_bridge->native_pcie_hotplug = 0; + if (!(root->osc_control_set & OSC_PCI_SHPC_NATIVE_HP_CONTROL)) + host_bridge->native_shpc_hotplug = 0; if (!(root->osc_control_set & OSC_PCI_EXPRESS_AER_CONTROL)) host_bridge->native_aer = 0; if (!(root->osc_control_set & OSC_PCI_EXPRESS_PME_CONTROL)) |