diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2015-03-11 15:43:43 +0000 |
|---|---|---|
| committer | Jason Cooper <jason@lakedaemon.net> | 2015-03-15 00:55:01 +0000 |
| commit | 08b55e2a9208e4841a17c9d9c2c454986392977d (patch) | |
| tree | 973018e9ca327f51c0b0813860d549baf8e13da1 | |
| parent | c517d838eb7d07bbe9507871fab3931deccff539 (diff) | |
genirq: Add irqchip_set_wake_parent
This proves to be useful with stacked domains, when the current
domain doesn't implement wake-up, but expect the parent to do so.
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/1426088629-15377-2-git-send-email-marc.zyngier@arm.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
| -rw-r--r-- | include/linux/irq.h | 1 | ||||
| -rw-r--r-- | kernel/irq/chip.c | 16 |
2 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h index d09ec7a1243e..3057c48e4933 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -460,6 +460,7 @@ extern void irq_chip_eoi_parent(struct irq_data *data); extern int irq_chip_set_affinity_parent(struct irq_data *data, const struct cpumask *dest, bool force); +extern int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on); #endif /* Handling of unhandled and spurious interrupts: */ diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index 6f1c7a566b95..eb9a4ea394ab 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -948,6 +948,22 @@ int irq_chip_retrigger_hierarchy(struct irq_data *data) return -ENOSYS; } + +/** + * irq_chip_set_wake_parent - Set/reset wake-up on the parent interrupt + * @data: Pointer to interrupt specific data + * @on: Whether to set or reset the wake-up capability of this irq + * + * Conditional, as the underlying parent chip might not implement it. + */ +int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on) +{ + data = data->parent_data; + if (data->chip->irq_set_wake) + return data->chip->irq_set_wake(data, on); + + return -ENOSYS; +} #endif /** |