From mboxrd@z Thu Jan 1 00:00:00 1970 From: thunder.leizhen@huawei.com (Zhen Lei) Date: Thu, 25 Feb 2016 19:53:28 +0800 Subject: [PATCH 2/2] PCI: generic: add description of property "interrupt-skip-mask" In-Reply-To: <1456401208-10136-1-git-send-email-thunder.leizhen@huawei.com> References: <1456401208-10136-1-git-send-email-thunder.leizhen@huawei.com> Message-ID: <1456401208-10136-2-git-send-email-thunder.leizhen@huawei.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- 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 : +- 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