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=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 8EEE3CA9EBB for ; Wed, 23 Oct 2019 21:46:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 637E620659 for ; Wed, 23 Oct 2019 21:46:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407805AbfJWVqt (ORCPT ); Wed, 23 Oct 2019 17:46:49 -0400 Received: from mga06.intel.com ([134.134.136.31]:39636 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2407788AbfJWVqq (ORCPT ); Wed, 23 Oct 2019 17:46:46 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga104.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 23 Oct 2019 14:46:46 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,222,1569308400"; d="scan'208";a="196908285" Received: from ayamada-mobl1.gar.corp.intel.com (HELO pbossart-mobl3.intel.com) ([10.254.95.208]) by fmsmga008.fm.intel.com with ESMTP; 23 Oct 2019 14:46:44 -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 , Pierre-Louis Bossart , Sanyog Kale Subject: [PATCH 16/18] soundwire: stream: only prepare stream when it is configured. Date: Wed, 23 Oct 2019 16:45:59 -0500 Message-Id: <20191023214601.883-17-pierre-louis.bossart@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191023214601.883-1-pierre-louis.bossart@linux.intel.com> References: <20191023214601.883-1-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 From: Bard Liao We don't need to prepare the stream again if the stream is already prepared. sdw_prepare_stream() could be called multiple times without calling sdw_deprepare_stream(). We call sdw_prepare_stream() in the prepare dai ops and sdw_deprepare_stream() in the hw_free dai ops. If an xrun happens, sdw_prepare_stream() will be called but sdw_deprepare_stream() will not, which results in an imbalance and an invalid total bandwidth. Signed-off-by: Bard Liao Signed-off-by: Pierre-Louis Bossart --- drivers/soundwire/stream.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c index 0a074d445b8d..38375c9124e4 100644 --- a/drivers/soundwire/stream.c +++ b/drivers/soundwire/stream.c @@ -1544,7 +1544,7 @@ static int _sdw_prepare_stream(struct sdw_stream_runtime *stream) */ int sdw_prepare_stream(struct sdw_stream_runtime *stream) { - int ret = 0; + int ret; if (!stream) { pr_err("SoundWire: Handle not found for stream\n"); @@ -1553,6 +1553,11 @@ int sdw_prepare_stream(struct sdw_stream_runtime *stream) sdw_acquire_bus_lock(stream); + if (stream->state == SDW_STREAM_PREPARED) { + ret = 0; + goto state_err; + } + if (stream->state != SDW_STREAM_CONFIGURED && stream->state != SDW_STREAM_DEPREPARED && stream->state != SDW_STREAM_DISABLED) { -- 2.20.1 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=-9.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 3BC21CA9EB9 for ; Wed, 23 Oct 2019 21:58:13 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B19E121906 for ; Wed, 23 Oct 2019 21:58:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="FrUPAI3O" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B19E121906 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id EE4011699; Wed, 23 Oct 2019 23:57:20 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz EE4011699 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1571867891; bh=ChgWpQgS78mcxhhEtQuNEWlA5/aUFSTLpcMEcXmOQaM=; h=From:To:Date:In-Reply-To:References:Cc:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=FrUPAI3OCqS+vKWWJhwc+/EvfGn3zqvSNptPY3H/zDefF13HWjt/qHGNvix+UO4kO P/pgYFXAnJeuFfjyYOrwap0G9hgRs24yXS0T3J8QlaQvY5rOuiVWaKAr/of36DTWEM v/JCznMuTUQdwT4R2WJVo4/7nQFq6uP5tj9iW8z0= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 511C7F8074D; Wed, 23 Oct 2019 23:46:53 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 8C6E1F80736; Wed, 23 Oct 2019 23:46:50 +0200 (CEST) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id C5DB4F8071F for ; Wed, 23 Oct 2019 23:46:47 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz C5DB4F8071F X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 23 Oct 2019 14:46:46 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,222,1569308400"; d="scan'208";a="196908285" Received: from ayamada-mobl1.gar.corp.intel.com (HELO pbossart-mobl3.intel.com) ([10.254.95.208]) by fmsmga008.fm.intel.com with ESMTP; 23 Oct 2019 14:46:44 -0700 From: Pierre-Louis Bossart To: alsa-devel@alsa-project.org Date: Wed, 23 Oct 2019 16:45:59 -0500 Message-Id: <20191023214601.883-17-pierre-louis.bossart@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191023214601.883-1-pierre-louis.bossart@linux.intel.com> References: <20191023214601.883-1-pierre-louis.bossart@linux.intel.com> MIME-Version: 1.0 Cc: Pierre-Louis Bossart , tiwai@suse.de, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, Ranjani Sridharan , vkoul@kernel.org, broonie@kernel.org, srinivas.kandagatla@linaro.org, jank@cadence.com, slawomir.blauciak@intel.com, Sanyog Kale , Bard liao , Rander Wang Subject: [alsa-devel] [PATCH 16/18] soundwire: stream: only prepare stream when it is configured. X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" From: Bard Liao We don't need to prepare the stream again if the stream is already prepared. sdw_prepare_stream() could be called multiple times without calling sdw_deprepare_stream(). We call sdw_prepare_stream() in the prepare dai ops and sdw_deprepare_stream() in the hw_free dai ops. If an xrun happens, sdw_prepare_stream() will be called but sdw_deprepare_stream() will not, which results in an imbalance and an invalid total bandwidth. Signed-off-by: Bard Liao Signed-off-by: Pierre-Louis Bossart --- drivers/soundwire/stream.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c index 0a074d445b8d..38375c9124e4 100644 --- a/drivers/soundwire/stream.c +++ b/drivers/soundwire/stream.c @@ -1544,7 +1544,7 @@ static int _sdw_prepare_stream(struct sdw_stream_runtime *stream) */ int sdw_prepare_stream(struct sdw_stream_runtime *stream) { - int ret = 0; + int ret; if (!stream) { pr_err("SoundWire: Handle not found for stream\n"); @@ -1553,6 +1553,11 @@ int sdw_prepare_stream(struct sdw_stream_runtime *stream) sdw_acquire_bus_lock(stream); + if (stream->state == SDW_STREAM_PREPARED) { + ret = 0; + goto state_err; + } + if (stream->state != SDW_STREAM_CONFIGURED && stream->state != SDW_STREAM_DEPREPARED && stream->state != SDW_STREAM_DISABLED) { -- 2.20.1 _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org https://mailman.alsa-project.org/mailman/listinfo/alsa-devel