[PATCH v6 14/15] spmi: pmic-arb: validate type when mapping IRQ
From: Brian Masney <hidden>
Date: 2019-01-19 20:44:06
Also in:
linux-arm-msm, linux-gpio, lkml
Subsystem:
spmi subsystem, the rest · Maintainers:
Stephen Boyd, Linus Torvalds
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 <redacted> --- 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