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    Subject[PATCH 19/39] irqdomain: Implement irq_domain_clear_mapping() with irq_domain_set_mapping()
    Date
    Now that we only deal with irq_data pointers, it is pretty obvious
    that irq_domain_clear_mapping() and irq_domain_set_mapping() are
    almost the exact same thing.

    Implement one it terms of the other.

    Signed-off-by: Marc Zyngier <maz@kernel.org>
    ---
    kernel/irq/irqdomain.c | 21 ++++++---------------
    1 file changed, 6 insertions(+), 15 deletions(-)

    diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
    index 7a4e38804487..ed2ffffc6fc6 100644
    --- a/kernel/irq/irqdomain.c
    +++ b/kernel/irq/irqdomain.c
    @@ -498,21 +498,6 @@ static bool irq_domain_is_nomap(struct irq_domain *domain)
    (domain->flags & IRQ_DOMAIN_FLAG_NO_MAP);
    }

    -static void irq_domain_clear_mapping(struct irq_domain *domain,
    - irq_hw_number_t hwirq)
    -{
    - if (irq_domain_is_nomap(domain))
    - return;
    -
    - if (hwirq < domain->revmap_size) {
    - domain->revmap[hwirq] = NULL;
    - } else {
    - mutex_lock(&domain->revmap_tree_mutex);
    - radix_tree_delete(&domain->revmap_tree, hwirq);
    - mutex_unlock(&domain->revmap_tree_mutex);
    - }
    -}
    -
    static void irq_domain_set_mapping(struct irq_domain *domain,
    irq_hw_number_t hwirq,
    struct irq_data *irq_data)
    @@ -529,6 +514,12 @@ static void irq_domain_set_mapping(struct irq_domain *domain,
    }
    }

    +static void irq_domain_clear_mapping(struct irq_domain *domain,
    + irq_hw_number_t hwirq)
    +{
    + irq_domain_set_mapping(domain, hwirq, NULL);
    +}
    +
    static void irq_domain_disassociate(struct irq_domain *domain, unsigned int irq)
    {
    struct irq_data *irq_data = irq_get_irq_data(irq);
    --
    2.30.2
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