From: Daniel Scally <djrscally@gmail.com>
Date: Tue, 23 Nov 2021 00:00:05 +0000 (+0100)
Subject: media: i2c: Defer probe if not endpoint found
X-Git-Tag: v5.17-rc1~171^2~152
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ba0c8045ea62e4870883570c65d86f1bc06eaa4c;p=thirdparty%2Fkernel%2Flinux.git

media: i2c: Defer probe if not endpoint found

The ov8865 driver is one of those that can be connected to a CIO2
device by the cio2-bridge code. This means that the absence of an
endpoint for this device is not necessarily fatal, as one might be
built by the cio2-bridge when it probes. Return -EPROBE_DEFER if no
endpoint is found rather than a fatal error.

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/i2c/ov8865.c b/drivers/media/i2c/ov8865.c
index a6372a0989e1c..68fdb1ce1e945 100644
--- a/drivers/media/i2c/ov8865.c
+++ b/drivers/media/i2c/ov8865.c
@@ -2796,10 +2796,8 @@ static int ov8865_probe(struct i2c_client *client)
 	/* Graph Endpoint */
 
 	handle = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
-	if (!handle) {
-		dev_err(dev, "unable to find endpoint node\n");
-		return -EINVAL;
-	}
+	if (!handle)
+		return -EPROBE_DEFER;
 
 	sensor->endpoint.bus_type = V4L2_MBUS_CSI2_DPHY;