Hi, consider arch/arm/mach-lpc32xx/irq.c: irq_set_chained_handler() is called at a point where it accesses irq_to_desc(IRQ_LPC32XX_SUB2IRQ)->irq_data.hwirq but which is not yet initialized.
(This bug just surfaced on lpc32xx when the chained interrupt controller SIC2 wasn't working. SIC1 does, but just by chance: The uninitialized value 0 is just coincidentally the correct one.) ...->hwirq is actually defined only later on in lpc32xx_init_irq() at irq_domain_add_legacy(). Ideally, I would just move the irq_set_chained_handler() calls to after of_irq_init() and irq_domain_add_legacy(). Is this OK or does this produce any race condition? Thanks in advance, Roland -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
