Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / kernel / irq / generic-chip.c

diff --git a/kernel/kernel/irq/generic-chip.c b/kernel/kernel/irq/generic-chip.c
index abd286a..a4775f3 100644 (file)
--- a/kernel/kernel/irq/generic-chip.c
+++ b/kernel/kernel/irq/generic-chip.c
@@ -411,8 +411,29 @@ int irq_map_generic_chip(struct irq_domain *d, unsigned int virq,
 }
 EXPORT_SYMBOL_GPL(irq_map_generic_chip);
 
+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);