[PATCH v3 0/5] of/irq: Misc msi-parent handling fixes/clean-ups

[Frank Li]

On Fri, Oct 17, 2025 at 10:47:47AM +0200, Lorenzo Pieralisi wrote:
> This is series 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 (4) is compile-tested only, I can not run it on HW, I do not have it,
> Scott, Ray please test it if you can.
>
> v2 -> v3:
> 	- Added additional patch to export of_msi_xlate()
> 	- Merged Marc's ITS parent diff
> 	- Added trailers, fixed commit logs
>
> v2: https://lore.kernel.org/lkml/20251014095845.1310624-1-lpieralisi@kernel.org/
> v1: https://lore.kernel.org/lkml/20250916091858.257868-1-lpieralisi@kernel.org/
>
> [1] https://lore.kernel.org/lkml/20250916091858.257868-1-lpieralisi@kernel.org/
>
> Cc: Sascha Bischoff <sascha.bischoff at arm.com>
> Cc: Scott Branden <sbranden at broadcom.com>
> Cc: Thomas Gleixner <tglx at linutronix.de>
> Cc: Bjorn Helgaas <bhelgaas at google.com>
> Cc: Rob Herring <robh at kernel.org>
> Cc: Ray Jui <rjui at broadcom.com>
> Cc: Frank Li <Frank.Li at nxp.com>
> Cc: Manivannan Sadhasivam <mani at kernel.org>
> Cc: "Krzysztof Wilczyński" <kwilczynski at kernel.org>
> Cc: Marc Zyngier <maz at kernel.org>

I tested epf msi doorbell, no regression. My test cover only using msi-map
code path.

For whole series

Reviewed-by: Frank Li <Frank.Li at nxp.com>

>
> Lorenzo Pieralisi (5):
>   of/irq: Add msi-parent check to of_msi_xlate()
>   of/irq: Fix OF node refcount in of_msi_get_domain()
>   of/irq: Export of_msi_xlate() for module usage
>   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 | 91 ++++++------------------
>  drivers/of/irq.c                         | 43 +++++++++--
>  drivers/pci/controller/pcie-iproc.c      | 22 ++----
>  3 files changed, 67 insertions(+), 89 deletions(-)
>
> --
> 2.50.1
>