xenbus_command_reply
return xenbus_command_reply(u, XS_ERROR, "ENOENT");
return xenbus_command_reply(u, XS_ERROR, "EINVAL");
return xenbus_command_reply(u, XS_ERROR,
return xenbus_command_reply(u,
rc = xenbus_command_reply(u, XS_ERROR, "EINVAL");
rc = xenbus_command_reply(u, XS_ERROR, "EINVAL");
rc = xenbus_command_reply(u, msg_type, "OK");