diff options
| author | Brian Masney <masneyb@onstation.org> | 2019-01-19 15:42:51 -0500 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2019-01-24 15:33:33 +0100 |
| commit | 135ef21ab064dd9811b51d5fa225829011adb10c (patch) | |
| tree | 52581e6acb8953d9de1cad6586e29bf1c7986d65 /drivers/spmi | |
| parent | f14a5e6da4a50e78a18384faf81eef6171909d3f (diff) | |
| download | linux-stable-135ef21ab064dd9811b51d5fa225829011adb10c.tar.gz linux-stable-135ef21ab064dd9811b51d5fa225829011adb10c.tar.bz2 linux-stable-135ef21ab064dd9811b51d5fa225829011adb10c.zip | |
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.c | 21 |
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; } |