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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, 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 75FFCC2BAEE for ; Wed, 11 Mar 2020 18:41:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3AF69206E9 for ; Wed, 11 Mar 2020 18:41:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730939AbgCKSlw (ORCPT ); Wed, 11 Mar 2020 14:41:52 -0400 Received: from mga18.intel.com ([134.134.136.126]:27194 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730923AbgCKSlr (ORCPT ); Wed, 11 Mar 2020 14:41:47 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 11 Mar 2020 11:41:47 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,541,1574150400"; d="scan'208";a="441776234" Received: from fjan-mobl.amr.corp.intel.com (HELO pbossart-mobl3.amr.corp.intel.com) ([10.251.25.157]) by fmsmga005.fm.intel.com with ESMTP; 11 Mar 2020 11:41:45 -0700 From: Pierre-Louis Bossart To: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org, tiwai@suse.de, broonie@kernel.org, vkoul@kernel.org, gregkh@linuxfoundation.org, jank@cadence.com, srinivas.kandagatla@linaro.org, slawomir.blauciak@intel.com, Bard liao , Rander Wang , Ranjani Sridharan , Hui Wang , Pierre-Louis Bossart , Sanyog Kale Subject: [PATCH 04/16] soundwire: cadence: handle error cases with CONFIG_UPDATE Date: Wed, 11 Mar 2020 13:41:16 -0500 Message-Id: <20200311184128.4212-5-pierre-louis.bossart@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200311184128.4212-1-pierre-louis.bossart@linux.intel.com> References: <20200311184128.4212-1-pierre-louis.bossart@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org config_update() may time out or cannot be use in ClockStopMode Signed-off-by: Pierre-Louis Bossart --- drivers/soundwire/cadence_master.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index 71cba2585151..4089c271305a 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -239,6 +239,11 @@ static int cdns_config_update(struct sdw_cdns *cdns) { int ret; + if (sdw_cdns_is_clock_stop(cdns)) { + dev_err(cdns->dev, "Cannot program MCP_CONFIG_UPDATE in ClockStopMode\n"); + return -EINVAL; + } + ret = cdns_clear_bit(cdns, CDNS_MCP_CONFIG_UPDATE, CDNS_MCP_CONFIG_UPDATE_BIT); if (ret < 0) -- 2.20.1