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=-15.2 required=3.0 tests=BAYES_00,DATE_IN_PAST_06_12, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 12207C64E7B for ; Thu, 3 Dec 2020 08:41:17 +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 41D89221F7 for ; Thu, 3 Dec 2020 08:41:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 41D89221F7 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 961F71684; Thu, 3 Dec 2020 09:40:24 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 961F71684 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1606984874; bh=FWPWx1yHVOFiLmrZOj85zq0BTGEDdg41d/OOYa4a7d8=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=EbR9n+oUi2oTTjrno2uR4lQar8Ppz0B509S2O+QYtMeIXNkcV9IE2y/FsXRWiZVXt KuSS/KwFMkXtXfizQgDlGfngmXG5677RufPC87JUdcXcVva3uQhBVa3VnOtxApRBf4 VQULe57u0R29Qa974KMeKlXhCOehhBUPNrji4zX4= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 51077F80278; Thu, 3 Dec 2020 09:39:33 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 79A26F8026D; Thu, 3 Dec 2020 09:39:30 +0100 (CET) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) (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 B78A2F80082 for ; Thu, 3 Dec 2020 09:39:27 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz B78A2F80082 IronPort-SDR: SF+35rUTOGOnD5qJalS45GGv6p9xtOptfLUquznQSmUQ0T7TU7N9trs5SshjPwZLg4QRilygRx TqakH9HZsaaA== X-IronPort-AV: E=McAfee;i="6000,8403,9823"; a="237276549" X-IronPort-AV: E=Sophos;i="5.78,389,1599548400"; d="scan'208";a="237276549" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Dec 2020 00:39:25 -0800 IronPort-SDR: 86lN0bY1U2vtxpSjvHkVfOaYdnF6z7Kh3DBrebjn4/YGcUBTgIPNAfpNJeOqcWmpKDqDwSMfUV oQrGCUWSE3Iw== X-IronPort-AV: E=Sophos;i="5.78,389,1599548400"; d="scan'208";a="481880935" Received: from bard-ubuntu.sh.intel.com ([10.239.13.33]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Dec 2020 00:39:20 -0800 From: Bard Liao To: alsa-devel@alsa-project.org, vkoul@kernel.org Subject: [PATCH 2/7] soundwire: bus: use sdw_write_no_pm when setting the bus scale registers Date: Thu, 3 Dec 2020 04:46:40 +0800 Message-Id: <20201202204645.23891-3-yung-chuan.liao@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201202204645.23891-1-yung-chuan.liao@linux.intel.com> References: <20201202204645.23891-1-yung-chuan.liao@linux.intel.com> Cc: pierre-louis.bossart@linux.intel.com, vinod.koul@linaro.org, tiwai@suse.de, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, ranjani.sridharan@linux.intel.com, hui.wang@canonical.com, broonie@kernel.org, srinivas.kandagatla@linaro.org, jank@cadence.com, sanyog.r.kale@intel.com, rander.wang@linux.intel.com, bard.liao@intel.com 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: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" From: Pierre-Louis Bossart When a Slave device is resumed, it may resume the bus and restart the enumeration. During that process, we absolutely don't want to call regular read/write routines which will wait for the resume to complete, otherwise a deadlock occurs. This patch fixes the same problem as the previous one, but is split to make the life of linux-stable maintainers less painful. Fixes: 29d158f90690 ('soundwire: bus: initialize bus clock base and scale registers') Signed-off-by: Pierre-Louis Bossart Reviewed-by: Rander Wang Signed-off-by: Bard Liao --- drivers/soundwire/bus.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c index 60c42508c6c6..b1830032b052 100644 --- a/drivers/soundwire/bus.c +++ b/drivers/soundwire/bus.c @@ -1222,7 +1222,7 @@ static int sdw_slave_set_frequency(struct sdw_slave *slave) } scale_index++; - ret = sdw_write(slave, SDW_SCP_BUS_CLOCK_BASE, base); + ret = sdw_write_no_pm(slave, SDW_SCP_BUS_CLOCK_BASE, base); if (ret < 0) { dev_err(&slave->dev, "SDW_SCP_BUS_CLOCK_BASE write failed:%d\n", ret); @@ -1230,13 +1230,13 @@ static int sdw_slave_set_frequency(struct sdw_slave *slave) } /* initialize scale for both banks */ - ret = sdw_write(slave, SDW_SCP_BUSCLOCK_SCALE_B0, scale_index); + ret = sdw_write_no_pm(slave, SDW_SCP_BUSCLOCK_SCALE_B0, scale_index); if (ret < 0) { dev_err(&slave->dev, "SDW_SCP_BUSCLOCK_SCALE_B0 write failed:%d\n", ret); return ret; } - ret = sdw_write(slave, SDW_SCP_BUSCLOCK_SCALE_B1, scale_index); + ret = sdw_write_no_pm(slave, SDW_SCP_BUSCLOCK_SCALE_B1, scale_index); if (ret < 0) dev_err(&slave->dev, "SDW_SCP_BUSCLOCK_SCALE_B1 write failed:%d\n", ret); -- 2.17.1