linux-kernel - [PATCH 0/3] Fix handling of multi-level OF nodes

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Date:   Thu,  5 Aug 2021 10:28:57 +0200
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     Rob Herring <robh@...nel.org>
Cc:     linuxarm@...wei.com, mauro.chehab@...wei.com,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org
Subject: [PATCH 0/3] Fix handling of multi-level OF nodes

Hi Rob,

This series address the issues related to not add all of_node data at sysfs.

Patch 1 is the real fix.
Patch 2 just changes the order of init, in order to allow printing what's
happening when registering a device;
Patch 3 is just debug.

With patch 1 applied, the sysfs nodes seem to match the PCI configuration:

$ find /sys/devices/platform/soc/f4000000.pcie/ -name of_node
/sys/devices/platform/soc/f4000000.pcie/of_node
/sys/devices/platform/soc/f4000000.pcie/pci0000:00/0000:00:00.0/of_node
/sys/devices/platform/soc/f4000000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/0000:02:07.0/of_node
/sys/devices/platform/soc/f4000000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/0000:02:07.0/pci_bus/0000:06/of_node
/sys/devices/platform/soc/f4000000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/pci_bus/0000:02/of_node
/sys/devices/platform/soc/f4000000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/0000:02:05.0/of_node
/sys/devices/platform/soc/f4000000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/0000:02:05.0/pci_bus/0000:05/of_node
/sys/devices/platform/soc/f4000000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/0000:02:01.0/of_node
/sys/devices/platform/soc/f4000000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/0000:02:01.0/pci_bus/0000:03/of_node
/sys/devices/platform/soc/f4000000.pcie/pci0000:00/0000:00:00.0/pci_bus/0000:01/of_node
/sys/devices/platform/soc/f4000000.pcie/pci0000:00/pci_bus/0000:00/of_node

Mauro Carvalho Chehab (3):
  PCI: of: Fix handling of multi-level PCI devices
  PCI: of: Setup PCI before setting the OF node
  PCI: of: Add some debug printks to track problems with of_node setup

 drivers/pci/of.c    | 9 +++++++++
 drivers/pci/probe.c | 5 ++---
 2 files changed, 11 insertions(+), 3 deletions(-)

-- 
2.31.1