diff options
| -rw-r--r-- | drivers/media/i2c/ov2740.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/drivers/media/i2c/ov2740.c b/drivers/media/i2c/ov2740.c index 653cd96bb156..06427e886d15 100644 --- a/drivers/media/i2c/ov2740.c +++ b/drivers/media/i2c/ov2740.c @@ -929,18 +929,26 @@ 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) + if (ret) { + fwnode_handle_put(ep); return ret; + } - if (mclk != OV2740_MCLK) + if (mclk != OV2740_MCLK) { + fwnode_handle_put(ep); return dev_err_probe(dev, -EINVAL, "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); |