From: Heikki Krogerus Date: Wed, 14 Apr 2021 07:54:38 +0000 (+0300) Subject: software node: Allow node addition to already existing device X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b622b24519f5b008f6d4e20e5675eaffa8fbd87b;p=linux.git software node: Allow node addition to already existing device If the node is added to an already exiting device, the node needs to be also linked to the device separately. This will make sure the reference count is kept in balance also when the node is injected to a device afterwards. Fixes: e68d0119e328 ("software node: Introduce device_add_software_node()") Reported-by: Pierre-Louis Bossart Signed-off-by: Heikki Krogerus Cc: stable Link: https://lore.kernel.org/r/20210414075438.64547-1-heikki.krogerus@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/base/swnode.c b/drivers/base/swnode.c index 740333629b420..3cc11b813f28c 100644 --- a/drivers/base/swnode.c +++ b/drivers/base/swnode.c @@ -1045,6 +1045,7 @@ int device_add_software_node(struct device *dev, const struct software_node *nod } set_secondary_fwnode(dev, &swnode->fwnode); + software_node_notify(dev, KOBJ_ADD); return 0; } @@ -1118,8 +1119,8 @@ int software_node_notify(struct device *dev, unsigned long action) switch (action) { case KOBJ_ADD: - ret = sysfs_create_link(&dev->kobj, &swnode->kobj, - "software_node"); + ret = sysfs_create_link_nowarn(&dev->kobj, &swnode->kobj, + "software_node"); if (ret) break;