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device property: Fix fwnode_graph_devcon_match() fwnode leak

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commit 4a7f4110f79163fd53ea65438041994ed615e3af upstream.

For each endpoint it encounters, fwnode_graph_devcon_match() checks
whether the endpoint's remote port parent device is available. If it is
not, it ignores the endpoint but does not put the reference to the remote
endpoint port parent fwnode. For available devices the fwnode handle
reference is put as expected.

Put the reference for unavailable devices now.

Fixes: 637e9e52b1 ("device connection: Find device connections also from device graphs")
Cc: 5.1+ <stable@vger.kernel.org> # 5.1+
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sakari Ailus 2021-12-01 14:59:29 +02:00 committed by Greg Kroah-Hartman
parent ecb71f7bd5
commit 6c1e3d8b1b
1 changed files with 3 additions and 1 deletions
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4
drivers/base/property.c
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@ -1195,8 +1195,10 @@ fwnode_graph_devcon_match(struct fwnode_handle *fwnode, const char *con_id,
fwnode_graph_for_each_endpoint(fwnode, ep) { fwnode_graph_for_each_endpoint(fwnode, ep) {
node = fwnode_graph_get_remote_port_parent(ep); node = fwnode_graph_get_remote_port_parent(ep);
if (!fwnode_device_is_available(node)) if (!fwnode_device_is_available(node)) {
fwnode_handle_put(node);
continue; continue;
}
ret = match(node, con_id, data); ret = match(node, con_id, data);
fwnode_handle_put(node); fwnode_handle_put(node);