irqdomain: Mark fwnodes when their irqdomain is added/removed

This allows fw_devlink to recognize irqdomain drivers that don't use the
device-driver model to initialize the device. fw_devlink will use this
information to make sure consumers of such irqdomain aren't indefinitely
blocked from probing, waiting for the irqdomain device to appear and
bind to a driver.

Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20210205222644.2357303-7-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 6aacd34..2881513 100644 (file)
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -205,6 +205,7 @@ struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size,
        }
 
        fwnode_handle_get(fwnode);
+       fwnode_dev_initialized(fwnode, true);
 
        /* Fill structure */
        INIT_RADIX_TREE(&domain->revmap_tree, GFP_KERNEL);
@@ -253,6 +254,7 @@ void irq_domain_remove(struct irq_domain *domain)
 
        pr_debug("Removed domain %s\n", domain->name);
 
+       fwnode_dev_initialized(domain->fwnode, false);
        fwnode_handle_put(domain->fwnode);
        if (domain->flags & IRQ_DOMAIN_NAME_ALLOCATED)
                kfree(domain->name);