PM: domains: Mark fwnodes when their powerdomain is added/removed

This allows fw_devlink to recognize power domain 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 power domain aren't
indefinitely blocked from probing, waiting for the power domain 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/20210205222644.2357303-8-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 9a14eed..6ac52a0 100644 (file)
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -2164,6 +2164,7 @@ static int genpd_add_provider(struct device_node *np, genpd_xlate_t xlate,
        cp->node = of_node_get(np);
        cp->data = data;
        cp->xlate = xlate;
+       fwnode_dev_initialized(&np->fwnode, true);
 
        mutex_lock(&of_genpd_mutex);
        list_add(&cp->link, &of_genpd_providers);
@@ -2353,6 +2354,7 @@ void of_genpd_del_provider(struct device_node *np)
                                }
                        }
 
+                       fwnode_dev_initialized(&cp->node->fwnode, false);
                        list_del(&cp->link);
                        of_node_put(cp->node);
                        kfree(cp);