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Hence when such >>>> a property is present (e.g. in the root node), the root interrupt >>>> controller may not be detected as such, causing a panic: >>> >>> I'm seeing a boot regression on the TI x15 platform in -next which >>> bisects to this patch in -next, unfortunately even with earlycon (though >>> just earlycon, I don't know the platform specific runes) the board just >>> dies with no output: >>> >>> https://validation.linaro.org/scheduler/job/4252918#L409 >>> >>> It does seem like a plausible patch for this sort of issue though, and >>> the bisect converges smoothly: >> >> All Samsung platforms fail as well. I was waiting with bisection but >> Marek was as usually very fast: >> >> https://lore.kernel.org/all/20251118115037.1866871-1-m.szyprowski@samsung.com/ > > Yeah, the various ti,omap[45]-wugen-mpu nodes have interrupt-parent > properties, but no interrupts{-extended} properties. > > Does the following (whitespace-damaged) patch, to restore finding an > explicit interrupt-parent, fix the issue? > > --- a/drivers/of/irq.c > +++ b/drivers/of/irq.c > @@ -685,6 +685,8 @@ void __init of_irq_init(const struct of_device_id *matches) > desc->interrupt_parent = of_parse_phandle(np, > "interrupts-extended", 0); > if (!desc->interrupt_parent && of_property_present(np, > "interrupts")) > desc->interrupt_parent = of_irq_find_parent(np); > + if (!desc->interrupt_parent) > + desc->interrupt_parent = of_parse_phandle(np, > "interrupt-parent", 0); > if (desc->interrupt_parent == np) { > of_node_put(desc->interrupt_parent); > desc->interrupt_parent = NULL; This patch also breaks various Tegra boards but the above does fix it. Jon -- nvpublic