From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755114AbcBGVg7 (ORCPT ); Sun, 7 Feb 2016 16:36:59 -0500 Received: from mga09.intel.com ([134.134.136.24]:46903 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755072AbcBGVg5 (ORCPT ); Sun, 7 Feb 2016 16:36:57 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.22,412,1449561600"; d="scan'208";a="898264903" From: Tomas Winkler To: Greg Kroah-Hartman Cc: Alexander Usyskin , linux-kernel@vger.kernel.org, Tomas Winkler Subject: [char-misc-next 09/27] mei: amthif: allow only one request at a time Date: Sun, 7 Feb 2016 23:35:25 +0200 Message-Id: <1454880943-12653-10-git-send-email-tomas.winkler@intel.com> X-Mailer: git-send-email 2.4.3 In-Reply-To: <1454880943-12653-1-git-send-email-tomas.winkler@intel.com> References: <1454880943-12653-1-git-send-email-tomas.winkler@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Alexander Usyskin A next amthif write can be executed only after the previous one has completed. Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler --- drivers/misc/mei/amthif.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/misc/mei/amthif.c b/drivers/misc/mei/amthif.c index 647edc68884f..4383a9ad9208 100644 --- a/drivers/misc/mei/amthif.c +++ b/drivers/misc/mei/amthif.c @@ -315,6 +315,14 @@ int mei_amthif_write(struct mei_cl *cl, struct mei_cl_cb *cb) dev = cl->dev; list_add_tail(&cb->list, &dev->amthif_cmd_list.list); + + /* + * The previous request is still in processing, queue this one. + */ + if (dev->iamthif_state > MEI_IAMTHIF_IDLE && + dev->iamthif_state < MEI_IAMTHIF_READ_COMPLETE) + return 0; + return mei_amthif_run_next_cmd(dev); } -- 2.4.3