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| author | Marc Zyngier <marc.zyngier@arm.com> | 2018-03-16 14:35:17 +0000 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2018-03-16 14:35:17 +0000 |
| commit | 83a86fbb5b56b5eed8a476cc3fe214077d7c4f49 (patch) | |
| tree | 3cdbda1af490ef31ceab2e57a50015b1adf2cc57 /drivers/irqchip | |
| parent | 920181ce84692653094d9a3e04e05c06177edf5d (diff) | |
| download | linux-83a86fbb5b56b5eed8a476cc3fe214077d7c4f49.tar.bz2 | |
irqchip/gic: Loudly complain about the use of IRQ_TYPE_NONE
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>
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-gic.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c index 79801c24800b..ac2e62d613d1 100644 --- a/drivers/irqchip/irq-gic.c +++ b/drivers/irqchip/irq-gic.c @@ -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; } |