diff options
| author |   Rajat Jain <rajatxjain@gmail.com> | 2014-03-31 16:51:23 -0700 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2014-04-24 16:47:46 -0600 |
| commit | 374a91404314cef882b27b293dd34d89e2a3c0b6 (patch) | |
| tree | 0cb20186a319974c787d5271abec960b3dcb8e62 /drivers/pci/pcie/portdrv_core.c | |
| parent | PCI: pciehp: Acknowledge spurious "cmd completed" event (diff) | |
| download | wireguard-linux-374a91404314cef882b27b293dd34d89e2a3c0b6.tar.xz wireguard-linux-374a91404314cef882b27b293dd34d89e2a3c0b6.zip | |
PCI: Allow hotplug service drivers to operate in polling mode
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 the absence of interrupts.
Signed-off-by: Rajat Jain <rajatxjain@gmail.com>
Signed-off-by: Rajat Jain <rajatjain@juniper.net>
Signed-off-by: Guenter Roeck <groeck@juniper.net>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/pcie/portdrv_core.c')
| -rw-r--r-- | drivers/pci/pcie/portdrv_core.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c index 986f8eadfd39..f6503add2f35 100644 --- a/drivers/pci/pcie/portdrv_core.c +++ b/drivers/pci/pcie/portdrv_core.c @@ -379,10 +379,13 @@ 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 the absence 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; } |