From patchwork Thu Feb 17 11:34:23 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: 12749902 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 4E926C433F5 for ; Thu, 17 Feb 2022 11:53:05 +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=pbmaC7bjbkwv8/v6Eibicc8SZTiEK0Q4EyeLILs480U=; b=4ycRxOKp45EBQp jlqBgnkDbIk6Q/dKFNktve2V1tiw9XEnsTAc2EXeD3hfHgVYExFTqMwNw4EIAo4q2+FCZ0b1rMEje 0ZBZL4oHe0guWpEnewxlcY9NTlcftsC1qQqAC+WFUdSjKQkL9GKRQCTpLN2cehZy+/zbMlKXiggiQ 6TSpA3qjJYYWt95bg/yomv84mpJgcBQbHQDyWB0f4ZizxrvLGhCmX+H/gt9HkZmsaOdxjgycgPkcH MWslzgxZDdQjufxGzAWyq3xzUvQ6MFsF4gttjp+luvsA/1fd1M8U1eM75D2GVfZZo/AveCR8lpc/G xNxUTHS/I6hZp5u/2tQA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nKfK3-00AD0J-1u; Thu, 17 Feb 2022 11:51:43 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nKfEN-00AA70-PJ; Thu, 17 Feb 2022 11:45:53 +0000 X-UUID: cc6f773c1a1e4d878ff64b6cc8890442-20220217 X-UUID: cc6f773c1a1e4d878ff64b6cc8890442-20220217 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 885098698; Thu, 17 Feb 2022 04:45:48 -0700 Received: from mtkmbs10n2.mediatek.inc (172.21.101.183) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 17 Feb 2022 03:35:46 -0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Thu, 17 Feb 2022 19:35:44 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 17 Feb 2022 19:35:43 +0800 From: Yong Wu To: Joerg Roedel , Rob Herring , Matthias Brugger , Will Deacon CC: Robin Murphy , Krzysztof Kozlowski , Tomasz Figa , , , , , , , Hsin-Yi Wang , , , , , , "AngeloGioacchino Del Regno" , , , , Subject: [PATCH v5 04/34] iommu/mediatek: Add list_del in mtk_iommu_remove Date: Thu, 17 Feb 2022 19:34:23 +0800 Message-ID: <20220217113453.13658-5-yong.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220217113453.13658-1-yong.wu@mediatek.com> References: <20220217113453.13658-1-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-20220217_034551_836298_1E860F7C X-CRM114-Status: GOOD ( 11.99 ) 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 Lack the list_del in the mtk_iommu_remove, and remove bus_set_iommu(*, NULL) since there may be several iommu HWs. we can not bus_set_iommu null when one iommu driver unbind. This could be a fix for mt2712 which support 2 M4U HW and list them. Fixes: 7c3a2ec02806 ("iommu/mediatek: Merge 2 M4U HWs into one iommu domain") Signed-off-by: Yong Wu Reviewed-by: AngeloGioacchino Del Regno --- drivers/iommu/mtk_iommu.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index 1a742bd1cdc9..794b153ec156 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -953,8 +953,7 @@ static int mtk_iommu_remove(struct platform_device *pdev) iommu_device_sysfs_remove(&data->iommu); iommu_device_unregister(&data->iommu); - if (iommu_present(&platform_bus_type)) - bus_set_iommu(&platform_bus_type, NULL); + list_del(&data->list); clk_disable_unprepare(data->bclk); device_link_remove(data->smicomm_dev, &pdev->dev);