From patchwork Thu Jun 16 05:41:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?WW9uZyBXdSAo5ZC05YuHKQ==?= X-Patchwork-Id: 12883358 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 16AC7C43334 for ; Thu, 16 Jun 2022 05:46:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Obf+8uYZ/o8wtdI+VaikiPuWXM3tQRTBWHXBfvEVkCY=; b=jCUwXMq3hxNYGF PfhtpxxGhx9vGYyeKfyEKhwhVcCTPWNAprfMc+xYnd47fa2A2n9dvNjpFcYdXy3gaE+CD8WQhapml uDPev61M56Blv0ZoBob5cR9WaPlzUZpLjLr/8zTLID5939ZsbYSrp99TiP9Twz1Bvtu0hTMg9EGYJ dKx1fXNQG6/gZ5CxTDgZ1QDKhNSJGkZTs323hQ0HCMlam6GnaP6Q9q6MSGJNYqUrx6pDu77Z7LFzX eXhjcmoU5YwSpi1grpTQ7bQeFkRYGo3cyhYyXHLKaO0CknRzwGbhtt9Jrjvi86H179Nqm8CDqqWIN Zm2ZbAkmIrtjNZCHG5Aw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o1iJd-000ZfF-Ea; Thu, 16 Jun 2022 05:45:13 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1o1iJZ-000ZbA-H5; Thu, 16 Jun 2022 05:45:10 +0000 X-UUID: f309560c1f5f4aa18ddd8fa87e5fd2d4-20220615 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.6,REQID:57934b0d-c4dc-460b-a47e-9d571853b4d7,OB:0,LO B:0,IP:0,URL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACT ION:release,TS:-5 X-CID-META: VersionHash:b14ad71,CLOUDID:8af6b248-4c92-421c-ad91-b806c0f58b2a,C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:0,File:nil ,QS:nil,BEC:nil,COL:0 X-UUID: f309560c1f5f4aa18ddd8fa87e5fd2d4-20220615 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 393223425; Wed, 15 Jun 2022 22:44:59 -0700 Received: from mtkmbs10n1.mediatek.inc (172.21.101.34) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 15 Jun 2022 22:42:34 -0700 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Thu, 16 Jun 2022 13:42:33 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 16 Jun 2022 13:42:32 +0800 From: Yong Wu To: Joerg Roedel , Matthias Brugger , Will Deacon CC: , , , , "Yong Wu" , AngeloGioacchino Del Regno , , , , , , , , Guenter Roeck , "Dan Carpenter" Subject: [PATCH v2 1/5] iommu/mediatek: Use dev_err_probe to mute probe_defer err log Date: Thu, 16 Jun 2022 13:41:59 +0800 Message-ID: <20220616054203.11365-2-yong.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220616054203.11365-1-yong.wu@mediatek.com> References: <20220616054203.11365-1-yong.wu@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220615_224509_610703_7F442D47 X-CRM114-Status: GOOD ( 11.61 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Mute the probe defer log: [ 2.654806] mtk-iommu 14018000.iommu: mm dts parse fail(-517). [ 2.656168] mtk-iommu 1c01f000.iommu: mm dts parse fail(-517). Fixes: d2e9a1102cfc ("iommu/mediatek: Contain MM IOMMU flow with the MM TYPE") Signed-off-by: Yong Wu Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Guenter Roeck Reviewed-by: Matthias Brugger --- drivers/iommu/mtk_iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index bb9dd92c9898..3b2489e8a6dd 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -1204,7 +1204,7 @@ static int mtk_iommu_probe(struct platform_device *pdev) if (MTK_IOMMU_IS_TYPE(data->plat_data, MTK_IOMMU_TYPE_MM)) { ret = mtk_iommu_mm_dts_parse(dev, &match, data); if (ret) { - dev_err(dev, "mm dts parse fail(%d).", ret); + dev_err_probe(dev, ret, "mm dts parse fail."); goto out_runtime_disable; } } else if (MTK_IOMMU_IS_TYPE(data->plat_data, MTK_IOMMU_TYPE_INFRA) && From patchwork Thu Jun 16 05:42:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?WW9uZyBXdSAo5ZC05YuHKQ==?= X-Patchwork-Id: 12883363 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 262C2C433EF for ; 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Wed, 15 Jun 2022 22:42:42 -0700 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Thu, 16 Jun 2022 13:42:40 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 16 Jun 2022 13:42:39 +0800 From: Yong Wu To: Joerg Roedel , Matthias Brugger , Will Deacon CC: , , , , "Yong Wu" , AngeloGioacchino Del Regno , , , , , , , , Guenter Roeck , "Dan Carpenter" Subject: [PATCH v2 2/5] iommu/mediatek: Add error path for loop of mm_dts_parse Date: Thu, 16 Jun 2022 13:42:00 +0800 Message-ID: <20220616054203.11365-3-yong.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220616054203.11365-1-yong.wu@mediatek.com> References: <20220616054203.11365-1-yong.wu@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220615_225133_418906_32913690 X-CRM114-Status: GOOD ( 13.21 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The mtk_iommu_mm_dts_parse will parse the smi larbs nodes. if the i+1 larb is parsed fail(return -EINVAL), we should of_node_put for the 0..i larbs. In the fail path, one of_node_put matches with of_parse_phandle in it. Fixes: d2e9a1102cfc ("iommu/mediatek: Contain MM IOMMU flow with the MM TYPE") Signed-off-by: Yong Wu --- drivers/iommu/mtk_iommu.c | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index 3b2489e8a6dd..ab24078938bf 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -1071,12 +1071,12 @@ static int mtk_iommu_mm_dts_parse(struct device *dev, struct component_match **m plarbdev = of_find_device_by_node(larbnode); if (!plarbdev) { - of_node_put(larbnode); - return -ENODEV; + ret = -ENODEV; + goto err_larbnode_put; } if (!plarbdev->dev.driver) { - of_node_put(larbnode); - return -EPROBE_DEFER; + ret = -EPROBE_DEFER; + goto err_larbnode_put; } data->larb_imu[id].dev = &plarbdev->dev; @@ -1107,9 +1107,20 @@ static int mtk_iommu_mm_dts_parse(struct device *dev, struct component_match **m DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME); if (!link) { dev_err(dev, "Unable to link %s.\n", dev_name(data->smicomm_dev)); - return -EINVAL; + ret = -EINVAL; + goto err_larbnode_put; } return 0; + +err_larbnode_put: + while (i--) { + larbnode = of_parse_phandle(dev->of_node, "mediatek,larbs", i); + if (larbnode && of_device_is_available(larbnode)) { + of_node_put(larbnode); + of_node_put(larbnode); + } + } + return ret; } static int mtk_iommu_probe(struct platform_device *pdev) From patchwork Thu Jun 16 05:42:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?WW9uZyBXdSAo5ZC05YuHKQ==?= X-Patchwork-Id: 12883361 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4A2D2C43334 for ; Thu, 16 Jun 2022 05:52:07 +0000 (UTC) DKIM-Signature: v=1; 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Thu, 16 Jun 2022 13:42:47 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 16 Jun 2022 13:42:45 +0800 From: Yong Wu To: Joerg Roedel , Matthias Brugger , Will Deacon CC: , , , , "Yong Wu" , AngeloGioacchino Del Regno , , , , , , , , Guenter Roeck , "Dan Carpenter" Subject: [PATCH v2 3/5] iommu/mediatek: Validate number of phandles associated with "mediatek, larbs" Date: Thu, 16 Jun 2022 13:42:01 +0800 Message-ID: <20220616054203.11365-4-yong.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220616054203.11365-1-yong.wu@mediatek.com> References: <20220616054203.11365-1-yong.wu@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220615_225047_500673_3D0F645E X-CRM114-Status: GOOD ( 15.66 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Guenter Roeck Fix the smatch warnings: drivers/iommu/mtk_iommu.c:878 mtk_iommu_mm_dts_parse() error: uninitialized symbol 'larbnode'. If someone abuse the dtsi node(Don't follow the definition of dt-binding), for example "mediatek,larbs" is provided as boolean property, "larb_nr" will be zero and cause abnormal. To fix this problem and improve the code safety, add some checking for the invalid input from dtsi, e.g. checking the larb_nr/larbid valid range, and avoid "mediatek,larb-id" property conflicts in the smi-larb nodes. Fixes: d2e9a1102cfc ("iommu/mediatek: Contain MM IOMMU flow with the MM TYPE") Reported-by: kernel test robot Reported-by: Dan Carpenter Signed-off-by: Guenter Roeck Signed-off-by: Yong Wu Reviewed-by: AngeloGioacchino Del Regno --- drivers/iommu/mtk_iommu.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index ab24078938bf..a869d4aee7b3 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -1052,6 +1052,8 @@ static int mtk_iommu_mm_dts_parse(struct device *dev, struct component_match **m larb_nr = of_count_phandle_with_args(dev->of_node, "mediatek,larbs", NULL); if (larb_nr < 0) return larb_nr; + if (larb_nr == 0 || larb_nr > MTK_LARB_NR_MAX) + return -EINVAL; for (i = 0; i < larb_nr; i++) { u32 id; @@ -1068,6 +1070,10 @@ static int mtk_iommu_mm_dts_parse(struct device *dev, struct component_match **m ret = of_property_read_u32(larbnode, "mediatek,larb-id", &id); if (ret)/* The id is consecutive if there is no this property */ id = i; + if (id >= MTK_LARB_NR_MAX) { + ret = -EINVAL; + goto err_larbnode_put; + } plarbdev = of_find_device_by_node(larbnode); if (!plarbdev) { @@ -1078,6 +1084,11 @@ static int mtk_iommu_mm_dts_parse(struct device *dev, struct component_match **m ret = -EPROBE_DEFER; goto err_larbnode_put; } + + if (data->larb_imu[id].dev) { + ret = -EEXIST; + goto err_larbnode_put; + } data->larb_imu[id].dev = &plarbdev->dev; component_match_add_release(dev, match, component_release_of, From patchwork Thu Jun 16 05:42:02 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?WW9uZyBXdSAo5ZC05YuHKQ==?= X-Patchwork-Id: 12883362 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3D8A5C43334 for ; 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Wed, 15 Jun 2022 22:42:54 -0700 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Thu, 16 Jun 2022 13:42:52 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 16 Jun 2022 13:42:51 +0800 From: Yong Wu To: Joerg Roedel , Matthias Brugger , Will Deacon CC: , , , , "Yong Wu" , AngeloGioacchino Del Regno , , , , , , , , Guenter Roeck , "Dan Carpenter" Subject: [PATCH v2 4/5] iommu/mediatek: Improve safety for mediatek, smi property in larb nodes Date: Thu, 16 Jun 2022 13:42:02 +0800 Message-ID: <20220616054203.11365-5-yong.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220616054203.11365-1-yong.wu@mediatek.com> References: <20220616054203.11365-1-yong.wu@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220615_225132_426982_75AEF18A X-CRM114-Status: GOOD ( 19.29 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org No functional change. Just improve safety from dts. All the larbs that connect to one IOMMU must connect with the same smi-common. This patch checks all the mediatek,smi property for each larb, If their mediatek,smi are different, it will return fails. Also avoid there is no available smi-larb nodes. Suggested-by: Guenter Roeck Signed-off-by: Yong Wu --- drivers/iommu/mtk_iommu.c | 49 ++++++++++++++++++++++++++------------- 1 file changed, 33 insertions(+), 16 deletions(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index a869d4aee7b3..5e86fd48928a 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -1044,7 +1044,7 @@ static const struct component_master_ops mtk_iommu_com_ops = { static int mtk_iommu_mm_dts_parse(struct device *dev, struct component_match **match, struct mtk_iommu_data *data) { - struct device_node *larbnode, *smicomm_node, *smi_subcomm_node; + struct device_node *larbnode, *frst_avail_smicomm_node = NULL; struct platform_device *plarbdev; struct device_link *link; int i, larb_nr, ret; @@ -1056,6 +1056,7 @@ static int mtk_iommu_mm_dts_parse(struct device *dev, struct component_match **m return -EINVAL; for (i = 0; i < larb_nr; i++) { + struct device_node *smicomm_node, *smi_subcomm_node; u32 id; larbnode = of_parse_phandle(dev->of_node, "mediatek,larbs", i); @@ -1091,27 +1092,43 @@ static int mtk_iommu_mm_dts_parse(struct device *dev, struct component_match **m } data->larb_imu[id].dev = &plarbdev->dev; + /* Get smi-(sub)-common dev from the last larb. */ + smi_subcomm_node = of_parse_phandle(larbnode, "mediatek,smi", 0); + if (!smi_subcomm_node) { + ret = -EINVAL; + goto err_larbnode_put; + } + + /* + * It may have two level smi-common. the node is smi-sub-common if it + * has a new mediatek,smi property. otherwise it is smi-commmon. + */ + smicomm_node = of_parse_phandle(smi_subcomm_node, "mediatek,smi", 0); + if (smicomm_node) + of_node_put(smi_subcomm_node); + else + smicomm_node = smi_subcomm_node; + + if (!frst_avail_smicomm_node) { + frst_avail_smicomm_node = smicomm_node; + } else if (frst_avail_smicomm_node != smicomm_node) { + dev_err(dev, "mediatek,smi is not right @larb%d.", id); + of_node_put(smicomm_node); + ret = -EINVAL; + goto err_larbnode_put; + } else { + of_node_put(smicomm_node); + } + component_match_add_release(dev, match, component_release_of, component_compare_of, larbnode); } - /* Get smi-(sub)-common dev from the last larb. */ - smi_subcomm_node = of_parse_phandle(larbnode, "mediatek,smi", 0); - if (!smi_subcomm_node) + if (!frst_avail_smicomm_node) return -EINVAL; - /* - * It may have two level smi-common. the node is smi-sub-common if it - * has a new mediatek,smi property. otherwise it is smi-commmon. - */ - smicomm_node = of_parse_phandle(smi_subcomm_node, "mediatek,smi", 0); - if (smicomm_node) - of_node_put(smi_subcomm_node); - else - smicomm_node = smi_subcomm_node; - - plarbdev = of_find_device_by_node(smicomm_node); - of_node_put(smicomm_node); + plarbdev = of_find_device_by_node(frst_avail_smicomm_node); + of_node_put(frst_avail_smicomm_node); data->smicomm_dev = &plarbdev->dev; link = device_link_add(data->smicomm_dev, dev, From patchwork Thu Jun 16 05:42:03 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?WW9uZyBXdSAo5ZC05YuHKQ==?= X-Patchwork-Id: 12883360 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D7085C433EF for ; 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Wed, 15 Jun 2022 22:43:00 -0700 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Thu, 16 Jun 2022 13:42:58 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 16 Jun 2022 13:42:57 +0800 From: Yong Wu To: Joerg Roedel , Matthias Brugger , Will Deacon CC: , , , , "Yong Wu" , AngeloGioacchino Del Regno , , , , , , , , Guenter Roeck , "Dan Carpenter" Subject: [PATCH v2 5/5] iommu/mediatek: Remove a unused "mapping" which is only for v1 Date: Thu, 16 Jun 2022 13:42:03 +0800 Message-ID: <20220616054203.11365-6-yong.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220616054203.11365-1-yong.wu@mediatek.com> References: <20220616054203.11365-1-yong.wu@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220615_225047_496510_8AA55135 X-CRM114-Status: UNSURE ( 9.63 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Just remove a unused variable that only is for mtk_iommu_v1. Fixes: 9485a04a5bb9 ("iommu/mediatek: Separate mtk_iommu_data for v1 and v2") Signed-off-by: Yong Wu Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Matthias Brugger --- drivers/iommu/mtk_iommu.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index 5e86fd48928a..e65e705d9fc1 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -221,10 +221,7 @@ struct mtk_iommu_data { struct device *smicomm_dev; struct mtk_iommu_bank_data *bank; - - struct dma_iommu_mapping *mapping; /* For mtk_iommu_v1.c */ struct regmap *pericfg; - struct mutex mutex; /* Protect m4u_group/m4u_dom above */ /*