[PATCH v1 1/3] irqdomain: Make __irq_domain_add() less OF-dependent

Andy Shevchenko
2020-05-20T16:49:37Z

__irq_domain_add() in some places relies on the fact that fwnode
can be only type of OF. This prevents refactoring of the code
to support other types of fwnode. Make it less OF-dependent
by switching to use fwnode directly where it makes sense.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
kernel/irq/irqdomain.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 35b8d97c3a1d..d59a4224f920 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -132,14 +132,13 @@ struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size,
const struct irq_domain_ops *ops,
void *host_data)
{
- struct device_node *of_node = to_of_node(fwnode);
struct irqchip_fwid *fwid;
struct irq_domain *domain;

static atomic_t unknown_domains;

domain = kzalloc_node(sizeof(*domain) + (sizeof(unsigned int) * size),
- GFP_KERNEL, of_node_to_nid(of_node));
+ GFP_KERNEL, of_node_to_nid(to_of_node(fwnode)));
if (!domain)
return NULL;

@@ -177,15 +176,15 @@ struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size,

domain->fwnode = fwnode;
#endif
- } else if (of_node) {
+ } else if (is_of_node(fwnode)) {
char *name;

/*
- * DT paths contain '/', which debugfs is legitimately
+ * fwnode paths contain '/', which debugfs is legitimately
* unhappy about. Replace them with ':', which does
* the trick and is not as offensive as '\'...
*/
- name = kasprintf(GFP_KERNEL, "%pOF", of_node);
+ name = kasprintf(GFP_KERNEL, "%pfw", fwnode);
if (!name) {
kfree(domain);
return NULL;
@@ -210,7 +209,7 @@ struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size,
domain->flags |= IRQ_DOMAIN_NAME_ALLOCATED;
}

- of_node_get(of_node);
+ fwnode_handle_get(fwnode);

/* Fill structure */
INIT_RADIX_TREE(&domain->revmap_tree, GFP_KERNEL);
@@ -259,7 +258,7 @@ void irq_domain_remove(struct irq_domain *domain)

pr_debug("Removed domain %s\n", domain->name);

- of_node_put(irq_domain_get_of_node(domain));
+ fwnode_handle_put(domain->fwnode);
if (domain->flags & IRQ_DOMAIN_NAME_ALLOCATED)
kfree(domain->name);
kfree(domain);
--
2.26.2