From patchwork Mon Aug 31 13:43:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Liao, Bard" X-Patchwork-Id: 251221 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=-11.5 required=3.0 tests=BAYES_00, DATE_IN_PAST_06_12, 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=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 54415C433E6 for ; Tue, 1 Sep 2020 01:39:03 +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 D3FEB2098B for ; Tue, 1 Sep 2020 01:39:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="K6IvwuDK" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D3FEB2098B 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 19C4A1755; Tue, 1 Sep 2020 03:38:11 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 19C4A1755 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1598924341; bh=22ta/4+9hk70a0xdubH6aV9cHtZIM/89KtRdeWBdvGo=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=K6IvwuDKm406HFsWTVun5/k+Bwx3bUllEoacAQvCWBRWnfVtdS+dYkSiSGFz+8b+W Rfz4IN5Zn3z1YX0NCL1DL5bpghvzq4jcdKB3m2vOBuFjqLjX46+kCFnGDxiM92ocD1 gTpxu1jvWvogDD1VM7q28hR6x5QGmcKpENU4GOSY= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id B42F8F8020D; Tue, 1 Sep 2020 03:37:54 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id CC480F8021D; Tue, 1 Sep 2020 03:37:16 +0200 (CEST) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) (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 58EDDF801EB for ; Tue, 1 Sep 2020 03:37:10 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 58EDDF801EB IronPort-SDR: nwUg05Ud+z0wcGhvYdQbFV9pMO6q8QOCF+aP94kkyeF4iiV9SVQf9ttCvgnzs3mkZwjY63i0dk WC+SVv8yxOvQ== X-IronPort-AV: E=McAfee;i="6000,8403,9730"; a="157090506" X-IronPort-AV: E=Sophos;i="5.76,376,1592895600"; d="scan'208";a="157090506" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Aug 2020 18:37:09 -0700 IronPort-SDR: RQC9SIDPAchTniEYKy2+rhW87zy1XH1PiVe8qO79TuSbA8KDY5dwHDPxqvVoVyXdsOMznx1rvc egEv1ctohclA== X-IronPort-AV: E=Sophos;i="5.76,376,1592895600"; d="scan'208";a="476984112" Received: from bard-ubuntu.sh.intel.com ([10.239.13.33]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Aug 2020 18:37:04 -0700 From: Bard Liao To: alsa-devel@alsa-project.org, vkoul@kernel.org Subject: [PATCH v4 1/3] ASoC: codecs: soundwire: remove port_ready[] usage from codecs. Date: Mon, 31 Aug 2020 21:43:16 +0800 Message-Id: <20200831134318.11443-2-yung-chuan.liao@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200831134318.11443-1-yung-chuan.liao@linux.intel.com> References: <20200831134318.11443-1-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, mengdong.lin@intel.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 port_ready will be changed to a fixed array in sdw.h and all initialization work will be done at soundwire side in the following patch. So remove them from codec drivers. Signed-off-by: Pierre-Louis Bossart Reviewed-by: Rander Wang Reviewed-by: Guennadi Liakhovetski Signed-off-by: Bard Liao Acked-by: Mark Brown --- sound/soc/codecs/max98373-sdw.c | 15 +-------------- sound/soc/codecs/rt1308-sdw.c | 14 +------------- sound/soc/codecs/rt5682-sdw.c | 15 +-------------- sound/soc/codecs/rt700-sdw.c | 15 +-------------- sound/soc/codecs/rt711-sdw.c | 15 +-------------- sound/soc/codecs/rt715-sdw.c | 33 +-------------------------------- 6 files changed, 6 insertions(+), 101 deletions(-) diff --git a/sound/soc/codecs/max98373-sdw.c b/sound/soc/codecs/max98373-sdw.c index 5fe724728e84..a3ec92775ea7 100644 --- a/sound/soc/codecs/max98373-sdw.c +++ b/sound/soc/codecs/max98373-sdw.c @@ -282,7 +282,7 @@ static const struct dev_pm_ops max98373_pm = { static int max98373_read_prop(struct sdw_slave *slave) { struct sdw_slave_prop *prop = &slave->prop; - int nval, i, num_of_ports; + int nval, i; u32 bit; unsigned long addr; struct sdw_dpn_prop *dpn; @@ -295,7 +295,6 @@ static int max98373_read_prop(struct sdw_slave *slave) prop->clk_stop_timeout = 20; nval = hweight32(prop->source_ports); - num_of_ports = nval; prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval, sizeof(*prop->src_dpn_prop), GFP_KERNEL); @@ -315,7 +314,6 @@ static int max98373_read_prop(struct sdw_slave *slave) /* do this again for sink now */ nval = hweight32(prop->sink_ports); - num_of_ports += nval; prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval, sizeof(*prop->sink_dpn_prop), GFP_KERNEL); @@ -333,17 +331,6 @@ static int max98373_read_prop(struct sdw_slave *slave) i++; } - /* Allocate port_ready based on num_of_ports */ - slave->port_ready = devm_kcalloc(&slave->dev, num_of_ports, - sizeof(*slave->port_ready), - GFP_KERNEL); - if (!slave->port_ready) - return -ENOMEM; - - /* Initialize completion */ - for (i = 0; i < num_of_ports; i++) - init_completion(&slave->port_ready[i]); - /* set the timeout values */ prop->clk_stop_timeout = 20; diff --git a/sound/soc/codecs/rt1308-sdw.c b/sound/soc/codecs/rt1308-sdw.c index b0ba0d2acbdd..09c69dbab12a 100644 --- a/sound/soc/codecs/rt1308-sdw.c +++ b/sound/soc/codecs/rt1308-sdw.c @@ -118,7 +118,7 @@ static int rt1308_clock_config(struct device *dev) static int rt1308_read_prop(struct sdw_slave *slave) { struct sdw_slave_prop *prop = &slave->prop; - int nval, i, num_of_ports = 1; + int nval, i; u32 bit; unsigned long addr; struct sdw_dpn_prop *dpn; @@ -131,7 +131,6 @@ static int rt1308_read_prop(struct sdw_slave *slave) /* for sink */ nval = hweight32(prop->sink_ports); - num_of_ports += nval; prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval, sizeof(*prop->sink_dpn_prop), GFP_KERNEL); @@ -149,17 +148,6 @@ static int rt1308_read_prop(struct sdw_slave *slave) i++; } - /* Allocate port_ready based on num_of_ports */ - slave->port_ready = devm_kcalloc(&slave->dev, num_of_ports, - sizeof(*slave->port_ready), - GFP_KERNEL); - if (!slave->port_ready) - return -ENOMEM; - - /* Initialize completion */ - for (i = 0; i < num_of_ports; i++) - init_completion(&slave->port_ready[i]); - /* set the timeout values */ prop->clk_stop_timeout = 20; diff --git a/sound/soc/codecs/rt5682-sdw.c b/sound/soc/codecs/rt5682-sdw.c index 94bf6bee78e6..b7c97aba7f17 100644 --- a/sound/soc/codecs/rt5682-sdw.c +++ b/sound/soc/codecs/rt5682-sdw.c @@ -537,7 +537,7 @@ static int rt5682_update_status(struct sdw_slave *slave, static int rt5682_read_prop(struct sdw_slave *slave) { struct sdw_slave_prop *prop = &slave->prop; - int nval, i, num_of_ports = 1; + int nval, i; u32 bit; unsigned long addr; struct sdw_dpn_prop *dpn; @@ -549,7 +549,6 @@ static int rt5682_read_prop(struct sdw_slave *slave) prop->sink_ports = 0x2; /* BITMAP: 00000010 */ nval = hweight32(prop->source_ports); - num_of_ports += nval; prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval, sizeof(*prop->src_dpn_prop), GFP_KERNEL); @@ -569,7 +568,6 @@ static int rt5682_read_prop(struct sdw_slave *slave) /* do this again for sink now */ nval = hweight32(prop->sink_ports); - num_of_ports += nval; prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval, sizeof(*prop->sink_dpn_prop), GFP_KERNEL); @@ -587,17 +585,6 @@ static int rt5682_read_prop(struct sdw_slave *slave) i++; } - /* Allocate port_ready based on num_of_ports */ - slave->port_ready = devm_kcalloc(&slave->dev, num_of_ports, - sizeof(*slave->port_ready), - GFP_KERNEL); - if (!slave->port_ready) - return -ENOMEM; - - /* Initialize completion */ - for (i = 0; i < num_of_ports; i++) - init_completion(&slave->port_ready[i]); - /* set the timeout values */ prop->clk_stop_timeout = 20; diff --git a/sound/soc/codecs/rt700-sdw.c b/sound/soc/codecs/rt700-sdw.c index 4d14048d1197..b19fbcc12c69 100644 --- a/sound/soc/codecs/rt700-sdw.c +++ b/sound/soc/codecs/rt700-sdw.c @@ -333,7 +333,7 @@ static int rt700_update_status(struct sdw_slave *slave, static int rt700_read_prop(struct sdw_slave *slave) { struct sdw_slave_prop *prop = &slave->prop; - int nval, i, num_of_ports = 1; + int nval, i; u32 bit; unsigned long addr; struct sdw_dpn_prop *dpn; @@ -345,7 +345,6 @@ static int rt700_read_prop(struct sdw_slave *slave) prop->sink_ports = 0xA; /* BITMAP: 00001010 */ nval = hweight32(prop->source_ports); - num_of_ports += nval; prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval, sizeof(*prop->src_dpn_prop), GFP_KERNEL); @@ -365,7 +364,6 @@ static int rt700_read_prop(struct sdw_slave *slave) /* do this again for sink now */ nval = hweight32(prop->sink_ports); - num_of_ports += nval; prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval, sizeof(*prop->sink_dpn_prop), GFP_KERNEL); @@ -383,17 +381,6 @@ static int rt700_read_prop(struct sdw_slave *slave) i++; } - /* Allocate port_ready based on num_of_ports */ - slave->port_ready = devm_kcalloc(&slave->dev, num_of_ports, - sizeof(*slave->port_ready), - GFP_KERNEL); - if (!slave->port_ready) - return -ENOMEM; - - /* Initialize completion */ - for (i = 0; i < num_of_ports; i++) - init_completion(&slave->port_ready[i]); - /* set the timeout values */ prop->clk_stop_timeout = 20; diff --git a/sound/soc/codecs/rt711-sdw.c b/sound/soc/codecs/rt711-sdw.c index 45b928954b58..dc4a2b482462 100644 --- a/sound/soc/codecs/rt711-sdw.c +++ b/sound/soc/codecs/rt711-sdw.c @@ -337,7 +337,7 @@ static int rt711_update_status(struct sdw_slave *slave, static int rt711_read_prop(struct sdw_slave *slave) { struct sdw_slave_prop *prop = &slave->prop; - int nval, i, num_of_ports = 1; + int nval, i; u32 bit; unsigned long addr; struct sdw_dpn_prop *dpn; @@ -349,7 +349,6 @@ static int rt711_read_prop(struct sdw_slave *slave) prop->sink_ports = 0x8; /* BITMAP: 00001000 */ nval = hweight32(prop->source_ports); - num_of_ports += nval; prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval, sizeof(*prop->src_dpn_prop), GFP_KERNEL); @@ -369,7 +368,6 @@ static int rt711_read_prop(struct sdw_slave *slave) /* do this again for sink now */ nval = hweight32(prop->sink_ports); - num_of_ports += nval; prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval, sizeof(*prop->sink_dpn_prop), GFP_KERNEL); @@ -387,17 +385,6 @@ static int rt711_read_prop(struct sdw_slave *slave) i++; } - /* Allocate port_ready based on num_of_ports */ - slave->port_ready = devm_kcalloc(&slave->dev, num_of_ports, - sizeof(*slave->port_ready), - GFP_KERNEL); - if (!slave->port_ready) - return -ENOMEM; - - /* Initialize completion */ - for (i = 0; i < num_of_ports; i++) - init_completion(&slave->port_ready[i]); - /* set the timeout values */ prop->clk_stop_timeout = 20; diff --git a/sound/soc/codecs/rt715-sdw.c b/sound/soc/codecs/rt715-sdw.c index d11b23d6b240..d8ed07305ffc 100644 --- a/sound/soc/codecs/rt715-sdw.c +++ b/sound/soc/codecs/rt715-sdw.c @@ -431,7 +431,7 @@ static int rt715_update_status(struct sdw_slave *slave, static int rt715_read_prop(struct sdw_slave *slave) { struct sdw_slave_prop *prop = &slave->prop; - int nval, i, num_of_ports = 1; + int nval, i; u32 bit; unsigned long addr; struct sdw_dpn_prop *dpn; @@ -443,7 +443,6 @@ static int rt715_read_prop(struct sdw_slave *slave) prop->sink_ports = 0x0; /* BITMAP: 00000000 */ nval = hweight32(prop->source_ports); - num_of_ports += nval; prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval, sizeof(*prop->src_dpn_prop), GFP_KERNEL); @@ -460,36 +459,6 @@ static int rt715_read_prop(struct sdw_slave *slave) i++; } - /* do this again for sink now */ - nval = hweight32(prop->sink_ports); - num_of_ports += nval; - prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval, - sizeof(*prop->sink_dpn_prop), - GFP_KERNEL); - if (!prop->sink_dpn_prop) - return -ENOMEM; - - dpn = prop->sink_dpn_prop; - i = 0; - addr = prop->sink_ports; - for_each_set_bit(bit, &addr, 32) { - dpn[i].num = bit; - dpn[i].simple_ch_prep_sm = true; - dpn[i].ch_prep_timeout = 10; - i++; - } - - /* Allocate port_ready based on num_of_ports */ - slave->port_ready = devm_kcalloc(&slave->dev, num_of_ports, - sizeof(*slave->port_ready), - GFP_KERNEL); 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31 Aug 2020 18:37:13 -0700 IronPort-SDR: jL5ldI/3OnHsq+A4LgqWDrckXyvBnGayk4IFMzysijZaWM6obnU4j2m5Lcu6QUU45RCELEWOL8 mJKvLwlQZLWA== X-IronPort-AV: E=Sophos;i="5.76,376,1592895600"; d="scan'208";a="476984142" Received: from bard-ubuntu.sh.intel.com ([10.239.13.33]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Aug 2020 18:37:09 -0700 From: Bard Liao To: alsa-devel@alsa-project.org, vkoul@kernel.org Subject: [PATCH v4 2/3] soundwire: add definition for maximum number of ports Date: Mon, 31 Aug 2020 21:43:17 +0800 Message-Id: <20200831134318.11443-3-yung-chuan.liao@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200831134318.11443-1-yung-chuan.liao@linux.intel.com> References: <20200831134318.11443-1-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, mengdong.lin@intel.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 A Device may have at most 15 physical ports (DP0, DP1..DP14). Signed-off-by: Pierre-Louis Bossart Reviewed-by: Rander Wang Reviewed-by: Guennadi Liakhovetski Signed-off-by: Bard Liao --- include/linux/soundwire/sdw.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h index 76052f12c9f7..0aa4c6af7554 100644 --- a/include/linux/soundwire/sdw.h +++ b/include/linux/soundwire/sdw.h @@ -38,7 +38,8 @@ struct sdw_slave; #define SDW_FRAME_CTRL_BITS 48 #define SDW_MAX_DEVICES 11 -#define SDW_VALID_PORT_RANGE(n) ((n) <= 14 && (n) >= 1) +#define SDW_MAX_PORTS 15 +#define SDW_VALID_PORT_RANGE(n) ((n) < SDW_MAX_PORTS && (n) >= 1) enum { SDW_PORT_DIRN_SINK = 0, From patchwork Mon Aug 31 13:43:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Liao, Bard" X-Patchwork-Id: 251220 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=-11.5 required=3.0 tests=BAYES_00, DATE_IN_PAST_06_12, 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=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 0E043C433E6 for ; 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a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1598924401; bh=L4CoTQdEXnSYXvZHMlbt4xRnLsxvNk0XwTvpCa5dZ2M=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=S62Y7Uil4urFnhE1Z0/+gBi7phrVWMAFZIax2p2s4/bct7zVHp6NgBrN6RhcWkJLQ DlqWS/QbAncGreKETMAJyGpFRU1qAsDpLeFgGroyTiVootb6HP78eqhE3SRaeP8F70 BDTBl2TdGWv/ATzgrtsuZ9RpbILt1FYVifYOVXIk= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 99829F802DB; Tue, 1 Sep 2020 03:37:59 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id B0AE4F80278; Tue, 1 Sep 2020 03:37:38 +0200 (CEST) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) (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 4DBD7F800BA for ; Tue, 1 Sep 2020 03:37:31 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 4DBD7F800BA IronPort-SDR: fAPQ5jziOc8rGmZoRDibA79vqHn+NqSxLcY2SWpmmNd/PYLa0itUzldWO1mxK7z62XA313Cjzt uVAKudvbaixg== X-IronPort-AV: E=McAfee;i="6000,8403,9730"; a="136608975" X-IronPort-AV: E=Sophos;i="5.76,376,1592895600"; d="scan'208";a="136608975" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Aug 2020 18:37:19 -0700 IronPort-SDR: j5f56kDZ12FvHXX7lkcNXavYf7Hp49KnMpUeYk3Q6SSa9llPtHQDn5XuUbUNw8tQnXkrrGh4JY t/Nu7Hq68nlQ== X-IronPort-AV: E=Sophos;i="5.76,376,1592895600"; d="scan'208";a="476984157" Received: from bard-ubuntu.sh.intel.com ([10.239.13.33]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Aug 2020 18:37:14 -0700 From: Bard Liao To: alsa-devel@alsa-project.org, vkoul@kernel.org Subject: [PATCH v4 3/3] soundwire: fix port_ready[] dynamic allocation in mipi_disco Date: Mon, 31 Aug 2020 21:43:18 +0800 Message-Id: <20200831134318.11443-4-yung-chuan.liao@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200831134318.11443-1-yung-chuan.liao@linux.intel.com> References: <20200831134318.11443-1-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, mengdong.lin@intel.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 The existing code allocates memory for the total number of ports. This only works if the ports are contiguous, but will break if e.g. a Devices uses port0, 1, and 14. The port_ready[] array would contain 3 elements, which would lead to an out-of-bounds access. Conversely in other cases, the wrong port index would be used leading to timeouts on prepare. This can be fixed by allocating for the worst-case of 15 ports (DP0..DP14). In addition since the number is now fixed, we can use an array instead of a dynamic allocation. Signed-off-by: Pierre-Louis Bossart Reviewed-by: Rander Wang Reviewed-by: Guennadi Liakhovetski Signed-off-by: Bard Liao --- drivers/soundwire/mipi_disco.c | 18 +----------------- drivers/soundwire/slave.c | 4 ++++ include/linux/soundwire/sdw.h | 2 +- 3 files changed, 6 insertions(+), 18 deletions(-) diff --git a/drivers/soundwire/mipi_disco.c b/drivers/soundwire/mipi_disco.c index 4ae62b452b8c..55a9c51c84c1 100644 --- a/drivers/soundwire/mipi_disco.c +++ b/drivers/soundwire/mipi_disco.c @@ -289,7 +289,7 @@ int sdw_slave_read_prop(struct sdw_slave *slave) struct sdw_slave_prop *prop = &slave->prop; struct device *dev = &slave->dev; struct fwnode_handle *port; - int num_of_ports, nval, i, dp0 = 0; + int nval; device_property_read_u32(dev, "mipi-sdw-sw-interface-revision", &prop->mipi_revision); @@ -352,7 +352,6 @@ int sdw_slave_read_prop(struct sdw_slave *slave) return -ENOMEM; sdw_slave_read_dp0(slave, port, prop->dp0_prop); - dp0 = 1; } /* @@ -383,21 +382,6 @@ int sdw_slave_read_prop(struct sdw_slave *slave) sdw_slave_read_dpn(slave, prop->sink_dpn_prop, nval, prop->sink_ports, "sink"); - /* some ports are bidirectional so check total ports by ORing */ - nval = prop->source_ports | prop->sink_ports; - num_of_ports = hweight32(nval) + dp0; /* add DP0 */ - - /* Allocate port_ready based on num_of_ports */ - slave->port_ready = devm_kcalloc(&slave->dev, num_of_ports, - sizeof(*slave->port_ready), - GFP_KERNEL); - if (!slave->port_ready) - return -ENOMEM; - - /* Initialize completion */ - for (i = 0; i < num_of_ports; i++) - init_completion(&slave->port_ready[i]); - return 0; } EXPORT_SYMBOL(sdw_slave_read_prop); diff --git a/drivers/soundwire/slave.c b/drivers/soundwire/slave.c index 0839445ee07b..a762ee24e6fa 100644 --- a/drivers/soundwire/slave.c +++ b/drivers/soundwire/slave.c @@ -25,6 +25,7 @@ static int sdw_slave_add(struct sdw_bus *bus, { struct sdw_slave *slave; int ret; + int i; slave = kzalloc(sizeof(*slave), GFP_KERNEL); if (!slave) @@ -58,6 +59,9 @@ static int sdw_slave_add(struct sdw_bus *bus, init_completion(&slave->probe_complete); slave->probed = false; + for (i = 0; i < SDW_MAX_PORTS; i++) + init_completion(&slave->port_ready[i]); + mutex_lock(&bus->bus_lock); list_add_tail(&slave->node, &bus->slaves); mutex_unlock(&bus->bus_lock); diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h index 0aa4c6af7554..63e71645fd13 100644 --- a/include/linux/soundwire/sdw.h +++ b/include/linux/soundwire/sdw.h @@ -619,7 +619,7 @@ struct sdw_slave { struct dentry *debugfs; #endif struct list_head node; - struct completion *port_ready; + struct completion port_ready[SDW_MAX_PORTS]; enum sdw_clk_stop_mode curr_clk_stop_mode; u16 dev_num; u16 dev_num_sticky;