From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932111AbbFMTPC (ORCPT ); Sat, 13 Jun 2015 15:15:02 -0400 Received: from mga01.intel.com ([192.55.52.88]:8172 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750715AbbFMTNL (ORCPT ); Sat, 13 Jun 2015 15:13:11 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,608,1427785200"; d="scan'208";a="710414780" From: Tomas Winkler To: gregkh@linuxfoundation.org Cc: arnd@arndb.de, linux-kernel@vger.kernel.org, Tomas Winkler Subject: [char-misc-next 14/17] mei: bus: blacklist clients by number of connections and nfc info client Date: Sat, 13 Jun 2015 22:11:46 +0300 Message-Id: <1434222709-10966-15-git-send-email-tomas.winkler@intel.com> X-Mailer: git-send-email 2.4.2 In-Reply-To: <1434222709-10966-1-git-send-email-tomas.winkler@intel.com> References: <1434222709-10966-1-git-send-email-tomas.winkler@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently we support only clients with single connection and fixed address clients so all other clients are blacklisted Blacklist nfc info client which is only used for retrieval of the NFC radio version Signed-off-by: Tomas Winkler --- drivers/misc/mei/bus-fixup.c | 42 ++++++++++++++++++++++++++++++++++++++---- 1 file changed, 38 insertions(+), 4 deletions(-) diff --git a/drivers/misc/mei/bus-fixup.c b/drivers/misc/mei/bus-fixup.c index 2c02a338f63b..d4b1cccb5bc1 100644 --- a/drivers/misc/mei/bus-fixup.c +++ b/drivers/misc/mei/bus-fixup.c @@ -27,8 +27,41 @@ #include "mei_dev.h" #include "client.h" +#define MEI_UUID_NFC_INFO UUID_LE(0xd2de1625, 0x382d, 0x417d, \ + 0x48, 0xa4, 0xef, 0xab, 0xba, 0x8a, 0x12, 0x06) + #define MEI_UUID_ANY NULL_UUID_LE +/** + * number_of_connections - determine whether an client be on the bus + * according number of connections + * We support only clients: + * 1. with single connection + * 2. and fixed clients (max_number_of_connections == 0) + * + * @cldev: me clients device + */ +static void number_of_connections(struct mei_cl_device *cldev) +{ + dev_dbg(&cldev->dev, "running hook %s on %pUl\n", + __func__, mei_me_cl_uuid(cldev->me_cl)); + + if (cldev->me_cl->props.max_number_of_connections > 1) + cldev->do_match = 0; +} + +/** + * blacklist - blacklist a client from the bus + * + * @cldev: me clients device + */ +static void blacklist(struct mei_cl_device *cldev) +{ + dev_dbg(&cldev->dev, "running hook %s on %pUl\n", + __func__, mei_me_cl_uuid(cldev->me_cl)); + cldev->do_match = 0; +} + struct mei_nfc_cmd { u8 command; u8 status; @@ -120,9 +153,7 @@ const uuid_le mei_nfc_guid = UUID_LE(0x0bb17a78, 0x2a8e, 0x4c50, 0x94, 0xd4, 0x50, 0x26, 0x67, 0x23, 0x77, 0x5c); -static const uuid_le mei_nfc_info_guid = UUID_LE(0xd2de1625, 0x382d, 0x417d, - 0x48, 0xa4, 0xef, 0xab, - 0xba, 0x8a, 0x12, 0x06); +static const uuid_le mei_nfc_info_guid = MEI_UUID_NFC_INFO; /* Vendors */ #define MEI_NFC_VENDOR_INSIDE 0x00 @@ -420,7 +451,10 @@ static struct mei_fixup { const uuid_le uuid; void (*hook)(struct mei_cl_device *cldev); -} mei_fixups[] = {}; +} mei_fixups[] = { + MEI_FIXUP(MEI_UUID_ANY, number_of_connections), + MEI_FIXUP(MEI_UUID_NFC_INFO, blacklist), +}; /** * mei_cl_dev_fixup - run fixup handlers -- 2.4.2