Make cp210x not abort if part number could not be read from device.
Signed-off-by: Sebastian Frei <dr....@gmx.net>
---
diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index f64e914a8985..d6afa823d6f0 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -1487,13 +1487,17 @@ static int cp210x_attach(struct usb_serial *serial)
if (!priv)
return -ENOMEM;
+ usb_set_serial_data(serial, priv);
+
result = cp210x_read_vendor_block(serial, REQTYPE_DEVICE_TO_HOST,
CP210X_GET_PARTNUM, &priv->partnum,
sizeof(priv->partnum));
- if (result < 0)
- goto err_free_priv;
- usb_set_serial_data(serial, priv);
+ if (result < 0) {
+ dev_err(&serial->interface->dev,
+ "querying part number failed, continuing without GPIO
support\n");
+ return 0;
+ }
if (priv->partnum == CP210X_PARTNUM_CP2105) {
result = cp2105_shared_gpio_init(serial);
@@ -1504,10 +1508,6 @@ static int cp210x_attach(struct usb_serial *serial)
}
return 0;
-err_free_priv:
- kfree(priv);
-
- return result;
}
static void cp210x_disconnect(struct usb_serial *serial)
--
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