From: Heikki Krogerus heikki.krogerus@linux.intel.com
commit b622b24519f5b008f6d4e20e5675eaffa8fbd87b upstream.
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 pierre-louis.bossart@linux.intel.com Signed-off-by: Heikki Krogerus heikki.krogerus@linux.intel.com Cc: stable stable@vger.kernel.org Link: https://lore.kernel.org/r/20210414075438.64547-1-heikki.krogerus@linux.intel... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/base/swnode.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/base/swnode.c +++ b/drivers/base/swnode.c @@ -1032,6 +1032,7 @@ int device_add_software_node(struct devi }
set_secondary_fwnode(dev, &swnode->fwnode); + software_node_notify(dev, KOBJ_ADD);
return 0; } @@ -1105,8 +1106,8 @@ int software_node_notify(struct device *
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;