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authorBrian Masney <masneyb@onstation.org>2019-01-19 23:42:51 +0300
committerLinus Walleij <linus.walleij@linaro.org>2019-01-24 17:33:33 +0300
commit135ef21ab064dd9811b51d5fa225829011adb10c (patch)
tree52581e6acb8953d9de1cad6586e29bf1c7986d65 /drivers/spmi
parentf14a5e6da4a50e78a18384faf81eef6171909d3f (diff)
downloadlinux-135ef21ab064dd9811b51d5fa225829011adb10c.tar.xz
spmi: pmic-arb: validate type when mapping IRQ
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> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/spmi')
-rw-r--r--drivers/spmi/spmi-pmic-arb.c21
1 files 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;
}