[PATCH 06/23] irqdomain: Convert __irq_domain_create() to use struct irq_domain_info

[Herve Codina]

The existing __irq_domain_create() use a bunch of parameters to create
an irq domain.

With the introduction of irq_domain_info structure, these parameters are
available in the information structure itself.
Using directly this information structure allows future flexibility to
add other parameters in a simple way without the need to change the
__irq_domain_create() prototype.

Convert __irq_domain_create() to use the information structure.

Suggested-by: Thomas Gleixner <t...@linutronix.de>
Signed-off-by: Herve Codina <herve.cod...@bootlin.com>
---
 kernel/irq/irqdomain.c | 48 +++++++++++++++++++++---------------------
 1 file changed, 24 insertions(+), 24 deletions(-)

diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 0b152061e63a..28a463e25d99 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -179,45 +179,40 @@ static int irq_domain_set_name(struct irq_domain *domain,
        return 0;
 }
 
-static struct irq_domain *__irq_domain_create(struct fwnode_handle *fwnode,
-                                             unsigned int size,
-                                             irq_hw_number_t hwirq_max,
-                                             int direct_max,
-                                             const struct irq_domain_ops *ops,
-                                             void *host_data)
+static struct irq_domain *__irq_domain_create(const struct irq_domain_info 
*info)
 {
        struct irq_domain *domain;
        int err;
 
-       if (WARN_ON((size && direct_max) ||
-                   (!IS_ENABLED(CONFIG_IRQ_DOMAIN_NOMAP) && direct_max) ||
-                   (direct_max && direct_max != hwirq_max)))
+       if (WARN_ON((info->size && info->direct_max) ||
+                   (!IS_ENABLED(CONFIG_IRQ_DOMAIN_NOMAP) && info->direct_max) 
||
+                   (info->direct_max && info->direct_max != info->hwirq_max)))
                return NULL;
 
-       domain = kzalloc_node(struct_size(domain, revmap, size),
-                             GFP_KERNEL, of_node_to_nid(to_of_node(fwnode)));
+       domain = kzalloc_node(struct_size(domain, revmap, info->size),
+                             GFP_KERNEL, 
of_node_to_nid(to_of_node(info->fwnode)));
        if (!domain)
                return NULL;
 
-       err = irq_domain_set_name(domain, fwnode);
+       err = irq_domain_set_name(domain, info->fwnode);
        if (err) {
                kfree(domain);
                return NULL;
        }
 
-       domain->fwnode = fwnode_handle_get(fwnode);
+       domain->fwnode = fwnode_handle_get(info->fwnode);
        fwnode_dev_initialized(domain->fwnode, true);
 
        /* Fill structure */
        INIT_RADIX_TREE(&domain->revmap_tree, GFP_KERNEL);
-       domain->ops = ops;
-       domain->host_data = host_data;
-       domain->hwirq_max = hwirq_max;
+       domain->ops = info->ops;
+       domain->host_data = info->host_data;
+       domain->hwirq_max = info->hwirq_max;
 
-       if (direct_max)
+       if (info->direct_max)
                domain->flags |= IRQ_DOMAIN_FLAG_NO_MAP;
 
-       domain->revmap_size = size;
+       domain->revmap_size = info->size;
 
        /*
         * Hierarchical domains use the domain lock of the root domain
@@ -264,8 +259,7 @@ struct irq_domain *irq_domain_instantiate(const struct 
irq_domain_info *info)
 {
        struct irq_domain *domain;
 
-       domain = __irq_domain_create(info->fwnode, info->size, info->hwirq_max,
-                                    info->direct_max, info->ops, 
info->host_data);
+       domain = __irq_domain_create(info);
        if (!domain)
                return ERR_PTR(-ENOMEM);
 
@@ -1204,13 +1198,19 @@ struct irq_domain *irq_domain_create_hierarchy(struct 
irq_domain *parent,
                                            const struct irq_domain_ops *ops,
                                            void *host_data)
 {
+       struct irq_domain_info info = {
+               .fwnode = fwnode,
+               .size = size,
+               .hwirq_max = size,
+               .ops = ops,
+               .host_data = host_data,
+       };
        struct irq_domain *domain;
 
-       if (size)
-               domain = __irq_domain_create(fwnode, size, size, 0, ops, 
host_data);
-       else
-               domain = __irq_domain_create(fwnode, 0, ~0, 0, ops, host_data);
+       if (!info.size)
+               info.hwirq_max = ~0U;
 
+       domain = __irq_domain_create(&info);
        if (domain) {
                if (parent)
                        domain->root = parent->root;
-- 
2.45.0