Messages in this thread Patch in this message | | | From | Marc Zyngier <> | Subject | [PATCH 2/2] irqchip/gic-v3: Loudly complain about the use of IRQ_TYPE_NONE | Date | Fri, 16 Mar 2018 14:55:11 +0000 |
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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> --- drivers/irqchip/irq-gic-v3.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c index 3e9eeb6cb294..5bb7bb22f1c1 100644 --- a/drivers/irqchip/irq-gic-v3.c +++ b/drivers/irqchip/irq-gic-v3.c @@ -916,6 +916,9 @@ static int gic_irq_domain_translate(struct irq_domain *d, } *type = fwspec->param[2] & IRQ_TYPE_SENSE_MASK; + + /* Make it clear that broken DTs are... broken */ + WARN_ON(*type == IRQ_TYPE_NONE); return 0; } @@ -925,6 +928,8 @@ 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; } -- 2.14.2
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