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    Subject[PATCH v7 06/14] genirq: Introduce irq_chip_{request,release}_resource_parent() apis
    Date
    Introduce irq_chip_{request,release}_resource_parent() apis so
    that these can be used in hierarchical irqchips.

    Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
    ---
    Changes since v6:
    - New patch

    include/linux/irq.h | 2 ++
    kernel/irq/chip.c | 27 +++++++++++++++++++++++++++
    2 files changed, 29 insertions(+)

    diff --git a/include/linux/irq.h b/include/linux/irq.h
    index 7ae8de5ad0f2..fb301cf29148 100644
    --- a/include/linux/irq.h
    +++ b/include/linux/irq.h
    @@ -625,6 +625,8 @@ extern int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on);
    extern int irq_chip_set_vcpu_affinity_parent(struct irq_data *data,
    void *vcpu_info);
    extern int irq_chip_set_type_parent(struct irq_data *data, unsigned int type);
    +extern int irq_chip_request_resources_parent(struct irq_data *data);
    +extern void irq_chip_release_resources_parent(struct irq_data *data);
    #endif

    /* Handling of unhandled and spurious interrupts: */
    diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
    index 51128bea3846..29d6c7d070b4 100644
    --- a/kernel/irq/chip.c
    +++ b/kernel/irq/chip.c
    @@ -1459,6 +1459,33 @@ int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on)
    return -ENOSYS;
    }
    EXPORT_SYMBOL_GPL(irq_chip_set_wake_parent);
    +
    +/**
    + * irq_chip_request_resources_parent - Request resources on the parent interrupt
    + * @data: Pointer to interrupt specific data
    + */
    +int irq_chip_request_resources_parent(struct irq_data *data)
    +{
    + data = data->parent_data;
    +
    + if (data->chip->irq_request_resources)
    + return data->chip->irq_request_resources(data);
    +
    + return -ENOSYS;
    +}
    +EXPORT_SYMBOL_GPL(irq_chip_request_resources_parent);
    +
    +/**
    + * irq_chip_release_resources_parent - Release resources on the parent interrupt
    + * @data: Pointer to interrupt specific data
    + */
    +void irq_chip_release_resources_parent(struct irq_data *data)
    +{
    + data = data->parent_data;
    + if (data->chip->irq_release_resources)
    + data->chip->irq_release_resources(data);
    +}
    +EXPORT_SYMBOL_GPL(irq_chip_release_resources_parent);
    #endif

    /**
    --
    2.21.0
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