If the bridge has not yet setup the fwnode-graph then
the fwnode_property_read_u32("clock-frequency") call will fail.
Move the fwnode_graph_get_next_endpoint() call to above reading
the clock-frequency.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
drivers/media/i2c/ov2740.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/media/i2c/ov2740.c b/drivers/media/i2c/ov2740.c
index 0396e40419ca..832f24721dca 100644
--- a/drivers/media/i2c/ov2740.c
+++ b/drivers/media/i2c/ov2740.c
@@ -926,6 +926,14 @@ static int ov2740_check_hwcfg(struct device *dev)
int ret;
unsigned int i, j;
+ /*
+ * Sometimes the fwnode graph is initialized by the bridge driver,
+ * wait for this.
+ */
+ ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
+ if (!ep)
+ return -EPROBE_DEFER;
+
ret = fwnode_property_read_u32(fwnode, "clock-frequency", &mclk);
if (ret)
return ret;
@@ -935,10 +943,6 @@ static int ov2740_check_hwcfg(struct device *dev)
"external clock %d is not supported\n",
mclk);
- ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
- if (!ep)
- return -EPROBE_DEFER;
-
ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
fwnode_handle_put(ep);
if (ret)
--
2.41.0
