Hi Andy, On Fri, Aug 30, 2019 at 03:46:57PM +0300, Andy Shevchenko wrote: > On Thu, Aug 29, 2019 at 01:10:38PM +0300, Sakari Ailus wrote: > > The prefix is used for printing purpose before a node, and it also works > > as a separator between two nodes. > > > + /* Is this the root node? */ > > + parent = fwnode_get_parent(fwnode); > > + if (!parent) > > + return ""; > > + > > + /* Is this 2nd node from the root? */ > > + parent = fwnode_get_next_parent(parent); > > + if (!parent) > > Can we theoretically have a case when we got parent != NULL and thus taken > reference, while the 2nd one is NULL and we leak reference here (and in all > similar places)?
fwnode_get_next_parent() releases that reference unconditionally. -- Sakari Ailus sakari.ai...@linux.intel.com
