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Subject[PATCH v6 14/15] spmi: pmic-arb: validate type when mapping IRQ
Date
qpnpint_irq_domain_map did not validate the IRQ type and this can cause
IRQs to not work as expected if an unsupported type (such as
IRQ_TYPE_NONE) is passed in. Now that spmi-gpio is a hierarchical IRQ
controller, and all device tree bindings have been updated, add
additional validation to the type field.

Signed-off-by: Brian Masney <masneyb@onstation.org>
---
Patch introduced in v6

drivers/spmi/spmi-pmic-arb.c | 21 ++++++++++++++-------
1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index bc7dc1d6e4b2..5666b99c9a92 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -740,9 +740,9 @@ static int qpnpint_irq_domain_translate(struct irq_domain *d,
}


-static void qpnpint_irq_domain_map(struct spmi_pmic_arb *pmic_arb,
- struct irq_domain *domain, unsigned int virq,
- irq_hw_number_t hwirq, unsigned int type)
+static int qpnpint_irq_domain_map(struct spmi_pmic_arb *pmic_arb,
+ struct irq_domain *domain, unsigned int virq,
+ irq_hw_number_t hwirq, unsigned int type)
{
irq_flow_handler_t handler;
unsigned int old_virq;
@@ -756,11 +756,15 @@ static void qpnpint_irq_domain_map(struct spmi_pmic_arb *pmic_arb,

if (type & IRQ_TYPE_EDGE_BOTH)
handler = handle_edge_irq;
- else
+ else if (type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH))
handler = handle_level_irq;
+ else
+ return -EINVAL;

irq_domain_set_info(domain, virq, hwirq, &pmic_arb_irqchip, pmic_arb,
handler, NULL, NULL);
+
+ return 0;
}

static int qpnpint_irq_domain_alloc(struct irq_domain *domain,
@@ -777,9 +781,12 @@ static int qpnpint_irq_domain_alloc(struct irq_domain *domain,
if (ret)
return ret;

- for (i = 0; i < nr_irqs; i++)
- qpnpint_irq_domain_map(pmic_arb, domain, virq + i, hwirq + i,
- type);
+ for (i = 0; i < nr_irqs; i++) {
+ ret = qpnpint_irq_domain_map(pmic_arb, domain, virq + i,
+ hwirq + i, type);
+ if (ret)
+ return ret;
+ }

return 0;
}
--
2.17.2
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