Interrupt Pin register is read-only and optional. Some pci devices may use msi/msix but leave the value of Interrupt Pin non-zero. In this case, the driver will print information as below: pci 0000:40:00.0: of_irq_parse_pci() failed with rc=-22 It's easily lead to misinterpret. Signed-off-by: Zhen Lei <thunder.leizhen@xxxxxxxxxx> --- Documentation/devicetree/bindings/pci/host-generic-pci.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/pci/host-generic-pci.txt b/Documentation/devicetree/bindings/pci/host-generic-pci.txt index 3f1d3fc..0f10978 100644 --- a/Documentation/devicetree/bindings/pci/host-generic-pci.txt +++ b/Documentation/devicetree/bindings/pci/host-generic-pci.txt @@ -70,6 +70,8 @@ Practice: Interrupt Mapping' and requires the following properties: - interrupt-map-mask : <see aforementioned specification> +- interrupt-skip-mask: Explicitly declare which pci devices only use msi/msix +but leave the value of Interrupt Pin non-zero. Example: -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
