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Subject[PATCH v2 2/2] Documentation: ABI: sysfs-bus-pci: Add description for IRQ entry
Date
From: Barry Song <song.bao.hua@hisilicon.com>

/sys/bus/pci/devices/.../irq has been there for many years but it
has never been documented. This patch is trying to document it.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Barry Song <song.bao.hua@hisilicon.com>
---
Documentation/ABI/testing/sysfs-bus-pci | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci
index 793cbb7..8d42385 100644
--- a/Documentation/ABI/testing/sysfs-bus-pci
+++ b/Documentation/ABI/testing/sysfs-bus-pci
@@ -96,6 +96,14 @@ Description:
This attribute indicates the mode that the irq vector named by
the file is in (msi vs. msix)

+What: /sys/bus/pci/devices/.../irq
+Date: August 2021
+Contact: Barry Song <song.bao.hua@hisilicon.com>
+Description:
+ Historically this attribute represent the IRQ line which runs
+ from the PCI device to the Interrupt controller. With MSI and
+ MSI-X, this attribute is the first IRQ number of IRQ vectors.
+
What: /sys/bus/pci/devices/.../remove
Date: January 2009
Contact: Linux PCI developers <linux-pci@vger.kernel.org>
--
1.8.3.1
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