From mboxrd@z Thu Jan 1 00:00:00 1970 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=-8.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 17BE8C5CFFE for ; Mon, 10 Dec 2018 21:04:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D9C7A2084C for ; Mon, 10 Dec 2018 21:04:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D9C7A2084C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730085AbeLJVE3 (ORCPT ); Mon, 10 Dec 2018 16:04:29 -0500 Received: from sauhun.de ([88.99.104.3]:36688 "EHLO pokefinder.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728001AbeLJVDQ (ORCPT ); Mon, 10 Dec 2018 16:03:16 -0500 Received: from localhost (p54B335CF.dip0.t-ipconnect.de [84.179.53.207]) by pokefinder.org (Postfix) with ESMTPSA id 783184C3C66; Mon, 10 Dec 2018 22:03:14 +0100 (CET) From: Wolfram Sang To: linux-i2c@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, Hans de Goede , linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Wolfram Sang , Wolfram Sang , linux-kernel@vger.kernel.org Subject: [RFC/RFT 02/10] i2c: reject new transfers when adapters are suspended Date: Mon, 10 Dec 2018 22:03:00 +0100 Message-Id: <20181210210310.12677-3-wsa+renesas@sang-engineering.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20181210210310.12677-1-wsa+renesas@sang-engineering.com> References: <20181210210310.12677-1-wsa+renesas@sang-engineering.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Using the new 'is_suspended' flag, we now reject new transfers if the adapter is already marked suspended. Signed-off-by: Wolfram Sang --- drivers/i2c/i2c-core-base.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c index 9f89e258c8ff..5b2078a902f8 100644 --- a/drivers/i2c/i2c-core-base.c +++ b/drivers/i2c/i2c-core-base.c @@ -1866,6 +1866,8 @@ int __i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) if (WARN_ON(!msgs || num < 1)) return -EINVAL; + if (WARN_ON(adap->is_suspended)) + return -ESHUTDOWN; if (adap->quirks && i2c_check_for_quirks(adap, msgs, num)) return -EOPNOTSUPP; -- 2.11.0