diff options
Diffstat (limited to 'drivers/hid/hid-uclogic-params.c')
| -rw-r--r-- | drivers/hid/hid-uclogic-params.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/hid/hid-uclogic-params.c b/drivers/hid/hid-uclogic-params.c index b582739a570a..7710d9f957da 100644 --- a/drivers/hid/hid-uclogic-params.c +++ b/drivers/hid/hid-uclogic-params.c @@ -826,7 +826,8 @@ cleanup: * uclogic_params_cleanup()). Not modified in case of error. * Cannot be NULL. * @hdev: The HID device of the tablet interface to initialize and get - * parameters from. Cannot be NULL. + * parameters from. Cannot be NULL. Must be using the USB low-level + * driver, i.e. be an actual USB tablet. * * Returns: * Zero, if successful. A negative errno code on error. @@ -844,7 +845,8 @@ int uclogic_params_init(struct uclogic_params *params, struct uclogic_params p = {0, }; /* Check arguments */ - if (params == NULL || hdev == NULL) { + if (params == NULL || hdev == NULL || + !hid_is_using_ll_driver(hdev, &usb_hid_driver)) { rc = -EINVAL; goto cleanup; } |