diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c index 61f9e75c45d20..1a6395d0c2bdb 100644 --- a/drivers/hid/hid-logitech-hidpp.c +++ b/drivers/hid/hid-logitech-hidpp.c @@ -361,12 +361,16 @@ static int hidpp_root_get_protocol_version(struct hidpp_device *hidpp) CMD_ROOT_GET_PROTOCOL_VERSION, NULL, 0, &response); - if (ret == 1) { + if (ret == HIDPP_ERROR_INVALID_SUBID) { hidpp->protocol_major = 1; hidpp->protocol_minor = 0; return 0; } + /* the device might not be connected */ + if (ret == HIDPP_ERROR_RESOURCE_ERROR) + return -EIO; + if (ret > 0) { hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", __func__, ret);