Messages in this thread Patch in this message | | | From | Zhen Lei <> | Subject | [PATCH 2/2] PCI: generic: add description of property "interrupt-skip-mask" | Date | Thu, 25 Feb 2016 19:53:28 +0800 |
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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@huawei.com> --- 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
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