# \[PATCH v2 0/4\] of/irq: Misc msi-parent handling fixes/clean-ups

- From: Lorenzo Pieralisi \<lpieralisi@kernel.org\>
- Date: 2025-10-14 09:58:51 
- List: linux-arm-kernel
- Page: https://ratatoskr.run/linux-arm-kernel/2025/10/3250348
- Thread: https://ratatoskr.run/linux-arm-kernel/2025/10/3250348/t.md

```text
This is a follow up to [1] - with additional patches that are addressing
Rob's feedback (pcie-layerscape-gen4 was removed from the kernel, Yay !)
and other bits and bobs I noticed while staring at the code.

Patch (1) is a fix and technically we would like to get it in v6.18 please.

Patch (3) is compile-tested only, I can not run it on HW, I do not have it,
Scott, Ray please test it if you can.

[1] https://lore.kernel.org/lkml/20250916091858.257868-1-lpieralisi@kernel.org/

Cc: Sascha Bischoff <redacted>
Cc: Scott Branden <sbranden@broadcom.com>
Cc: Thomas Gleixner <redacted>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Ray Jui <rjui@broadcom.com>
Cc: Frank Li <Frank.Li@nxp.com>
Cc: Manivannan Sadhasivam <mani@kernel.org>
Cc: "Krzysztof Wilczyński" <kwilczynski@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>

Lorenzo Pieralisi (4):
  of/irq: Add msi-parent check to of_msi_xlate()
  of/irq: Fix OF node refcount in of_msi_get_domain()
  PCI: iproc: Implement MSI controller node detection with
    of_msi_xlate()
  irqchip/gic-its: Rework platform MSI deviceID detection

 drivers/irqchip/irq-gic-its-msi-parent.c | 98 ++++++++----------------
 drivers/of/irq.c                         | 42 +++++++++-
 drivers/pci/controller/pcie-iproc.c      | 22 ++----
 3 files changed, 76 insertions(+), 86 deletions(-)

-- 
2.50.1


```