question about arch/arm/mach-s3c24xx/irq.c

[Julia Lawall]

The function s3c24xx_irq_map in arch/arm/mach-s3c24xx/irq.c contains the
code:

                parent_irq_data = &parent_intc->irqs[irq_data->parent_irq];
		if (!irq_data) {
                        pr_err("irq-s3c24xx: no irq data found for hwirq %lu\n",
                               hw);
                        goto err;
		}

At this point irq_data has already been tested, so the null test on
irq_data does not look correct.  But I wonder if parent_irq_data could
ever be null here?

julia
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