genirq/irqdomain: Remove the param count restriction from select()

Now that the GIC-v3 callback can handle invocation with a fwspec parameter
count of 0 lift the restriction in the core code and invoke select()
unconditionally when the domain provides it.

Preparatory change for per device MSI domains.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240127161753.114685-3-apatel@ventanamicro.com

diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 0bdef4fe925bf5dae05d81468e3d60de8649f267..8fee37918195c981edc8765fb679112adc98d70d 100644 (file)
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -448,7 +448,7 @@ struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec,
         */
        mutex_lock(&irq_domain_mutex);
        list_for_each_entry(h, &irq_domain_list, link) {
-               if (h->ops->select && fwspec->param_count)
+               if (h->ops->select)
                        rc = h->ops->select(h, fwspec, bus_token);
                else if (h->ops->match)
                        rc = h->ops->match(h, to_of_node(fwnode), bus_token);