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 7228AC432C3 for ; Thu, 14 Nov 2019 18:31:06 +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 ED5B0206F0 for ; Thu, 14 Nov 2019 18:31:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="np/Se/W+" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ED5B0206F0 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 306C016AB; Thu, 14 Nov 2019 19:30:14 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 306C016AB DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1573756264; bh=6HR+/e/pasU7ANYcoObkqcyXssaWKU1VRsWpgHMMMzg=; h=From:To:Date:In-Reply-To:References:Cc:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=np/Se/W+nHxjHoFVeEEcHg2lQiH7wpzgypdZvGrVo8Xj5nBiGTEVhGGMcGewjLetO SS3OnJf+gTq23ZmeRHCAi3WeG1cGcRR9YL73vhw6zkrfEfic6CSvri1cgPmilToTFj zHCKezX9XgizE5tlKVpctSpQA+N/apYUjivW6MhQ= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 8224DF8025A; Thu, 14 Nov 2019 19:18:33 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 52CABF80157; Thu, 14 Nov 2019 19:18:16 +0100 (CET) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) (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 37B51F80132 for ; Thu, 14 Nov 2019 19:18:03 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 37B51F80132 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Nov 2019 10:18:03 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,304,1569308400"; d="scan'208";a="195123591" Received: from chiahuil-mobl.amr.corp.intel.com (HELO pbossart-mobl3.amr.corp.intel.com) ([10.255.228.77]) by orsmga007.jf.intel.com with ESMTP; 14 Nov 2019 10:18:02 -0800 From: Pierre-Louis Bossart To: alsa-devel@alsa-project.org Date: Thu, 14 Nov 2019 12:16:59 -0600 Message-Id: <20191114181702.22254-20-pierre-louis.bossart@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191114181702.22254-1-pierre-louis.bossart@linux.intel.com> References: <20191114181702.22254-1-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 v3 19/22] 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 6aa0b5d370c0..bd0bddf73830 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