media: v4l2-core: v4l2-async: Check sd->fwnode->secondary in match_fwnode()

Where the fwnode graph is comprised of software_nodes, these will be
assigned as the secondary to dev->fwnode. Check the v4l2_subdev's fwnode
for a secondary and attempt to match against it during match_fwnode() to
accommodate that possibility.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Scally <djrscally@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c
index e3ab003..9dd896d 100644 (file)
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -88,6 +88,14 @@ static bool match_fwnode(struct v4l2_async_notifier *notifier,
                return true;
 
        /*
+        * Check the same situation for any possible secondary assigned to the
+        * subdev's fwnode
+        */
+       if (!IS_ERR_OR_NULL(sd->fwnode->secondary) &&
+           sd->fwnode->secondary == asd->match.fwnode)
+               return true;
+
+       /*
         * Otherwise, check if the sd fwnode and the asd fwnode refer to an
         * endpoint or a device. If they're of the same type, there's no match.
         * Technically speaking this checks if the nodes refer to a connected