diff mbox series

[RESEND,2/3] media: ov13b10: Defer probe if no endpoint found

Message ID 20230526100725.2467635-2-bingbu.cao@intel.com (mailing list archive)
State New, archived
Headers show
Series [RESEND,1/3] media: ov13b10: support new ACPI HID 'OVTI13B1' | expand

Commit Message

Cao, Bingbu May 26, 2023, 10:07 a.m. UTC 
From: Bingbu Cao <bingbu.cao@intel.com>

The ov13b10 need be connected to a CIO2 or IPU device by bridge, sometimes
the bridge driver was not probed before ov13b10 driver, then the absence
of the fwnode endpoint for this device is expected, so driver return
-EPROBE_DEFER in this case to let the probe occur after bridge driver.

Signed-off-by: Hao Yao <hao.yao@intel.com>
Signed-off-by: Bingbu Cao <bingbu.cao@intel.com>
---
 drivers/media/i2c/ov13b10.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/media/i2c/ov13b10.c b/drivers/media/i2c/ov13b10.c
index ede33899248c..2d48c94659a4 100644
--- a/drivers/media/i2c/ov13b10.c
+++ b/drivers/media/i2c/ov13b10.c
@@ -1331,6 +1331,10 @@  static int ov13b10_check_hwcfg(struct device *dev)
 	if (!fwnode)
 		return -ENXIO;
 
+	ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
+	if (!ep)
+		return -EPROBE_DEFER;
+
 	ret = fwnode_property_read_u32(dev_fwnode(dev), "clock-frequency",
 				       &ext_clk);
 	if (ret) {
@@ -1344,10 +1348,6 @@  static int ov13b10_check_hwcfg(struct device *dev)
 		return -EINVAL;
 	}
 
-	ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
-	if (!ep)
-		return -ENXIO;
-
 	ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
 	fwnode_handle_put(ep);
 	if (ret)