From patchwork Mon Feb 8 15:06:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Winkler, Tomas" X-Patchwork-Id: 379240 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4690CC433E6 for ; Mon, 8 Feb 2021 15:11:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E740C64EDC for ; Mon, 8 Feb 2021 15:11:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231426AbhBHPLR (ORCPT ); Mon, 8 Feb 2021 10:11:17 -0500 Received: from mga09.intel.com ([134.134.136.24]:25623 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233180AbhBHPHo (ORCPT ); Mon, 8 Feb 2021 10:07:44 -0500 IronPort-SDR: JuaLT8piz4shZlXv5SnZ3liFF+DLxSu6XCFfcwTueTGGJ4njkY7erH/gst9JlmM5nOlOrBK75a DqgpggVdUNRg== X-IronPort-AV: E=McAfee;i="6000,8403,9888"; a="181871129" X-IronPort-AV: E=Sophos;i="5.81,162,1610438400"; d="scan'208";a="181871129" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Feb 2021 07:07:04 -0800 IronPort-SDR: mkRsbQyU3E3f9hCdH1zSf8UEuNmTnN83q9XKoSbMon5eaqhShSD0/eLzGBMaPeybsS5tWF9jVe gl1+y8wHCNiQ== X-IronPort-AV: E=Sophos;i="5.81,162,1610438400"; d="scan'208";a="395414222" Received: from twinkler-lnx.jer.intel.com ([10.12.91.138]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Feb 2021 07:07:02 -0800 From: Tomas Winkler To: Greg Kroah-Hartman Cc: Alexander Usyskin , linux-kernel@vger.kernel.org, stable@vger.kernel.org, Tomas Winkler Subject: [char-misc-next 1/2] mei: bus: block send with vtag on non-conformat FW Date: Mon, 8 Feb 2021 17:06:48 +0200 Message-Id: <20210208150649.141358-1-tomas.winkler@intel.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Alexander Usyskin Block data send with vtag if either transport layer or FW client are not supporting vtags. Cc: # v5.10+ Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler --- drivers/misc/mei/bus.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c index 34fb5e541fe5..be99bb0a16cf 100644 --- a/drivers/misc/mei/bus.c +++ b/drivers/misc/mei/bus.c @@ -61,6 +61,13 @@ ssize_t __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length, u8 vtag, goto out; } + if (vtag) { + /* Check if vtag is supported by client */ + rets = mei_cl_vt_support_check(cl); + if (rets) + goto out; + } + if (length > mei_cl_mtu(cl)) { rets = -EFBIG; goto out;