For hot-added PCIe ports, it always generates a warning message on x86
platforms when binding to pcieport driver as:
"device [8086:0e0b] has invalid IRQ; check vendor BIOS".
It's due to that we check pci_dev->irq before actually allocating IRQ
number for the PCI device:
if (!dev->irq && dev->pin) {
dev_warn(&dev->dev, "device [%04x:%04x] has invalid IRQ; "
"check vendor BIOS\n", dev->vendor, dev->device);
}
status = pcie_port_device_register(dev);
-->pci_enable_device(dev);
-->pci_enable_device_flags()
-->do_pci_enable_device()
-->pcibios_enable_device()
-->pcibios_enable_irq()
This warning message isn't generated for PCIe ports present at boot time
because x86 arch code has called acpi_pci_irq_enable() in pci_acpi_init()
for each PCI device for safety.
Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
---
drivers/pci/pcie/portdrv_pci.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c
index 0d8fdc48e642..0e35f9670066 100644
--- a/drivers/pci/pcie/portdrv_pci.c
+++ b/drivers/pci/pcie/portdrv_pci.c
@@ -203,10 +203,6 @@ static int pcie_portdrv_probe(struct pci_dev *dev,
(pci_pcie_type(dev) != PCI_EXP_TYPE_DOWNSTREAM)))
return -ENODEV;
- if (!dev->irq && dev->pin) {
- dev_warn(&dev->dev, "device [%04x:%04x] has invalid IRQ; "
- "check vendor BIOS\n", dev->vendor, dev->device);
- }
status = pcie_port_device_register(dev);
if (status)
return status;
--
1.7.10.4
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