On Mon, Mar 31, 2014 at 04:51:23PM -0700, Rajat Jain wrote:
> Today the PCIe port bus driver disables the Hot-plug service if the
> port device does not have the capability to generate interrupts.
> However, a user must be able to use the "pciehp_poll_mode" parameter
> to use the pciehp in polling method in such a case. Today it is not
> possible.
>
> This patch allows a hotplug service driver to decide whether or not
> it would like to continue in absense of interrupts.
>
> Signed-off-by: Rajat Jain <rajatxjain@xxxxxxxxx>
> Signed-off-by: Rajat Jain <rajatjain@xxxxxxxxxxx>
> Signed-off-by: Guenter Roeck <groeck@xxxxxxxxxxx>
Applied to pci/hotplug for v3.16, thanks!
> ---
> v2: Drop the extra debug msg in pciehp
> (and just retain the changes in portdrv_core.c)
>
> drivers/pci/pcie/portdrv_core.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c
> index 0b6e766..ba31deb 100644
> --- a/drivers/pci/pcie/portdrv_core.c
> +++ b/drivers/pci/pcie/portdrv_core.c
> @@ -377,10 +377,13 @@ int pcie_port_device_register(struct pci_dev *dev)
> /*
> * Initialize service irqs. Don't use service devices that
> * require interrupts if there is no way to generate them.
> + * However, some drivers may have a polling mode (e.g pciehp_poll_mode)
> + * that can be used in absense of irqs. Allow them to determine
> + * if that is to be used.
> */
> status = init_service_irqs(dev, irqs, capabilities);
> if (status) {
> - capabilities &= PCIE_PORT_SERVICE_VC;
> + capabilities &= PCIE_PORT_SERVICE_VC | PCIE_PORT_SERVICE_HP;
> if (!capabilities)
> goto error_disable;
> }
> --
> 1.7.9.5
>
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