On Sat, Oct 26, 2013 at 11:23 AM, Andrew Murray
<amurray@xxxxxxxxxxxxxxxxxxx> wrote:
> 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@xxxxxxxxxxxxxxxxxxx>
Applied to pci/misc. I'll probably include this in the v3.13 pull
request. Thanks!
Bjorn
> ---
> drivers/pci/pcie/portdrv_core.c | 15 ++++++++-------
> 1 file changed, 8 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c
> index 31063ac..08d131f 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;
> }
>
> --
> 1.8.1.2
>
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