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irqchip/gic: Loudly complain about the use of IRQ_TYPE_NONE

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There is a huge number of broken device trees out there. Just
grepping through the tree for the use of IRQ_TYPE_NONE in conjunction
with the GIC is scary.

People just don't realise that IRQ_TYPE_NONE just doesn't exist, and
you just get whatever junk was there before. So let's make them aware
of the issue.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Marc Zyngier 2018-03-16 14:35:17 +00:00
parent 920181ce84
commit 83a86fbb5b
1 changed files with 5 additions and 0 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

5
drivers/irqchip/irq-gic.c
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@ -1011,6 +1011,9 @@ static int gic_irq_domain_translate(struct irq_domain *d,
*hwirq += 16;
*type = fwspec->param[2] & IRQ_TYPE_SENSE_MASK;
/* Make it clear that broken DTs are... broken */
WARN_ON(*type == IRQ_TYPE_NONE);
return 0;
}
@ -1020,6 +1023,8 @@ static int gic_irq_domain_translate(struct irq_domain *d,
*hwirq = fwspec->param[0];
*type = fwspec->param[1];
WARN_ON(*type == IRQ_TYPE_NONE);
return 0;
}