diff options
Diffstat (limited to 'kernel/irq')
| -rw-r--r-- | kernel/irq/generic-chip.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/kernel/irq/generic-chip.c b/kernel/irq/generic-chip.c index 11ad73b39d2e..a3a392097804 100644 --- a/kernel/irq/generic-chip.c +++ b/kernel/irq/generic-chip.c @@ -414,8 +414,29 @@ int irq_map_generic_chip(struct irq_domain *d, unsigned int virq, return 0; } +static void irq_unmap_generic_chip(struct irq_domain *d, unsigned int virq) +{ + struct irq_data *data = irq_domain_get_irq_data(d, virq); + struct irq_domain_chip_generic *dgc = d->gc; + unsigned int hw_irq = data->hwirq; + struct irq_chip_generic *gc; + int irq_idx; + + gc = irq_get_domain_generic_chip(d, hw_irq); + if (!gc) + return; + + irq_idx = hw_irq % dgc->irqs_per_chip; + + clear_bit(irq_idx, &gc->installed); + irq_domain_set_info(d, virq, hw_irq, &no_irq_chip, NULL, NULL, NULL, + NULL); + +} + struct irq_domain_ops irq_generic_chip_ops = { .map = irq_map_generic_chip, + .unmap = irq_unmap_generic_chip, .xlate = irq_domain_xlate_onetwocell, }; EXPORT_SYMBOL_GPL(irq_generic_chip_ops); |