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authorAndrew Murray <amurray@embedded-bits.co.uk>2013-10-26 18:23:25 +0100
committerBjorn Helgaas <bhelgaas@google.com>2013-11-01 09:25:16 -0600
commit6b87e700cd65120b70aaa097a8f4e7f22f1945ee (patch)
tree7fcf07701f6802cc4f778f2d76f4719b8ac0ac68 /drivers/pci
parent0394cb192db4397753046775a8caa736397737b5 (diff)
downloadlinux-6b87e700cd65120b70aaa097a8f4e7f22f1945ee.tar.bz2
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')
-rw-r--r--drivers/pci/pcie/portdrv_core.c15
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;
}