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From:   Daniel Scally <djrscally@gmail.com>
To:     linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org,
        linux-media@vger.kernel.org, devel@acpica.org
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        Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Subject: [PATCH v3 11/14] media: v4l2-core: v4l2-async: Check sd->fwnode->secondary in match_fwnode()
Date:   Thu, 24 Dec 2020 01:09:04 +0000
Message-Id: <20201224010907.263125-12-djrscally@gmail.com>
In-Reply-To: <20201224010907.263125-1-djrscally@gmail.com>
References: <20201224010907.263125-1-djrscally@gmail.com>
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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>
---
Changes in v3
	- None

 drivers/media/v4l2-core/v4l2-async.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c
index e3ab003a6c85..9dd896d085ec 100644
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -87,6 +87,14 @@ static bool match_fwnode(struct v4l2_async_notifier *notifier,
 	if (sd->fwnode == asd->match.fwnode)
 		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.
-- 
2.25.1