On 20/01/2023 15:10, Yann Sionneau wrote: > + > +int __init kvx_ipi_ctrl_probe(irqreturn_t (*ipi_irq_handler)(int, void *)) > +{ > + struct device_node *np; > + int ret; > + unsigned int ipi_irq; > + void __iomem *ipi_base; > + > + np = of_find_compatible_node(NULL, NULL, "kalray,kvx-ipi-ctrl"); Nope, big no. Drivers go to drivers, not to arch code. Use proper driver infrastructure. Best regards, Krzysztof