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authorMarc Zyngier <marc.zyngier@arm.com>2015-03-11 15:43:43 +0000
committerJason Cooper <jason@lakedaemon.net>2015-03-15 00:55:01 +0000
commit08b55e2a9208e4841a17c9d9c2c454986392977d (patch)
tree973018e9ca327f51c0b0813860d549baf8e13da1 /kernel/irq/chip.c
parentc517d838eb7d07bbe9507871fab3931deccff539 (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>
Diffstat (limited to 'kernel/irq/chip.c')
-rw-r--r--kernel/irq/chip.c16
1 files changed, 16 insertions, 0 deletions
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
/**