diff options
| -rw-r--r-- | drivers/usb/typec/mux/ps883x.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/usb/typec/mux/ps883x.c b/drivers/usb/typec/mux/ps883x.c index 274de7abe585..f8b47187f4cf 100644 --- a/drivers/usb/typec/mux/ps883x.c +++ b/drivers/usb/typec/mux/ps883x.c @@ -291,6 +291,7 @@ static int ps883x_retimer_probe(struct i2c_client *client) struct typec_switch_desc sw_desc = { }; struct typec_retimer_desc rtmr_desc = { }; struct ps883x_retimer *retimer; + unsigned int val; int ret; retimer = devm_kzalloc(dev, sizeof(*retimer), GFP_KERNEL); @@ -360,6 +361,16 @@ static int ps883x_retimer_probe(struct i2c_client *client) /* firmware initialization delay */ msleep(60); + + /* make sure device is accessible */ + ret = regmap_read(retimer->regmap, REG_USB_PORT_CONN_STATUS_0, + &val); + if (ret) { + dev_err(dev, "failed to read conn_status_0: %d\n", ret); + if (ret == -ENXIO) + ret = -EIO; + goto err_clk_disable; + } } sw_desc.drvdata = retimer; |