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>
---
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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