diff options
| author | Andrew Murray <amurray@embedded-bits.co.uk> | 2013-10-26 21:23:25 +0400 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2013-11-01 19:25:16 +0400 |
| commit | 6b87e700cd65120b70aaa097a8f4e7f22f1945ee (patch) | |
| tree | 7fcf07701f6802cc4f778f2d76f4719b8ac0ac68 /drivers/pci/pcie | |
| parent | 0394cb192db4397753046775a8caa736397737b5 (diff) | |
| download | linux-6b87e700cd65120b70aaa097a8f4e7f22f1945ee.tar.xz | |
PCI: Update pcie_ports 'auto' behavior for non-ACPI platforms
The pcie_ports parameter, which defaults to 'auto', allows a user
to specify if PCIe port services are disabled ('compat'), always
enabled ('native'), or only used when allowed by the BIOS
('auto').
Where CONFIG_ACPI isn't enabled, as is often the case for non
x86/ia64 platforms, the 'auto' behavior results in that of
'compat'. Thus in order to use port services on these platforms
'pcie_ports=native' must be added to the kernel command line.
This patch results in the 'native' behavior being followed where
'auto' is selected and ACPI is not enabled.
Signed-off-by: Andrew Murray <amurray@embedded-bits.co.uk>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/pcie')
| -rw-r--r-- | drivers/pci/pcie/portdrv_core.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c index 31063ac30992..08d131f7815b 100644 --- a/drivers/pci/pcie/portdrv_core.c +++ b/drivers/pci/pcie/portdrv_core.c @@ -260,13 +260,14 @@ static int get_port_device_capability(struct pci_dev *dev) if (pcie_ports_disabled) return 0; - err = pcie_port_platform_notify(dev, &cap_mask); - if (!pcie_ports_auto) { - cap_mask = PCIE_PORT_SERVICE_PME | PCIE_PORT_SERVICE_HP - | PCIE_PORT_SERVICE_VC; - if (pci_aer_available()) - cap_mask |= PCIE_PORT_SERVICE_AER; - } else if (err) { + cap_mask = PCIE_PORT_SERVICE_PME | PCIE_PORT_SERVICE_HP + | PCIE_PORT_SERVICE_VC; + if (pci_aer_available()) + cap_mask |= PCIE_PORT_SERVICE_AER; + + if (pcie_ports_auto) { + err = pcie_port_platform_notify(dev, &cap_mask); + if (err) return 0; } |