From patchwork Thu Jan 18 11:52:49 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeffy Chen X-Patchwork-Id: 10173019 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 1964E602DC for ; Thu, 18 Jan 2018 11:55:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0733520134 for ; Thu, 18 Jan 2018 11:55:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EFB5F205FC; Thu, 18 Jan 2018 11:55:58 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id A682020134 for ; Thu, 18 Jan 2018 11:55:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=wOOJ0bzdmlsYMQo8W16/lqXSEWwICn4FW2GMGRxy1jg=; b=LZxVPWP7/whVKl+p0CJj1Ooew2 NfOZ8NHyxSrFVXZuFhEmsrcbE6jNAMFXRVBxh8Sb++h9WmoAixfYBxs3Bj2Ex1RCQ9VBWOz/Bgo9D JWtYuYGHOorq5TiXm3VB/El0K5Fb2hwYaQWlYGMzJ1V2QBhAlOUjG116LzUjxHmml5U/EtAqTQnqh uRE7NeEAPKNtwqsaxoqP0086V9DP+fLkcZSRIu9v8aGHnhwJrORXKUCjH7n7YRrwFF2ZFOi0htGpU Xt9gf5epo7067Ij7t+jTLzIOS/A+CUUaIaiioRtHtrKuGyW07F8gUVza2kOFxTH1t87Dk54So2yqu +fsYOlUw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.89 #1 (Red Hat Linux)) id 1ec8nU-0002my-A6; Thu, 18 Jan 2018 11:55:56 +0000 Received: from regular1.263xmail.com ([211.150.99.141]) by bombadil.infradead.org with esmtps (Exim 4.89 #1 (Red Hat Linux)) id 1ec8mO-0000GG-SI; Thu, 18 Jan 2018 11:55:35 +0000 Received: from jeffy.chen?rock-chips.com (unknown [192.168.167.227]) by regular1.263xmail.com (Postfix) with ESMTP id E5DA565; Thu, 18 Jan 2018 19:54:35 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 Received: from localhost (localhost [127.0.0.1]) by smtp.263.net (Postfix) with ESMTPA id 62D45360; Thu, 18 Jan 2018 19:54:31 +0800 (CST) X-RL-SENDER: jeffy.chen@rock-chips.com X-FST-TO: linux-kernel@vger.kernel.org X-SENDER-IP: 103.29.142.67 X-LOGIN-NAME: jeffy.chen@rock-chips.com X-UNIQUE-TAG: X-ATTACHMENT-NUM: 0 X-SENDER: cjf@rock-chips.com X-DNS-TYPE: 0 Received: from localhost (unknown [103.29.142.67]) by smtp.263.net (Postfix) whith ESMTP id 4220QBR9L3; Thu, 18 Jan 2018 19:54:35 +0800 (CST) From: Jeffy Chen To: linux-kernel@vger.kernel.org Subject: [PATCH v4 11/13] iommu/rockchip: Fix error handling in init Date: Thu, 18 Jan 2018 19:52:49 +0800 Message-Id: <20180118115251.5542-12-jeffy.chen@rock-chips.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20180118115251.5542-1-jeffy.chen@rock-chips.com> References: <20180118115251.5542-1-jeffy.chen@rock-chips.com> X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: xxm@rock-chips.com, Joerg Roedel , Jeffy Chen , tfiga@chromium.org, jcliang@chromium.org, linux-rockchip@lists.infradead.org, iommu@lists.linux-foundation.org, robin.murphy@arm.com, linux-arm-kernel@lists.infradead.org, Heiko Stuebner MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP It's hard to undo bus_set_iommu() in the error path, so move it to the end of rk_iommu_probe(). Signed-off-by: Jeffy Chen Reviewed-by: Tomasz Figa Reviewed-by: Robin Murphy --- Changes in v4: None Changes in v3: None Changes in v2: Move bus_set_iommu() to rk_iommu_probe(). drivers/iommu/rockchip-iommu.c | 15 ++------------- 1 file changed, 2 insertions(+), 13 deletions(-) diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c index b1f177ae03c7..2c095f96c033 100644 --- a/drivers/iommu/rockchip-iommu.c +++ b/drivers/iommu/rockchip-iommu.c @@ -1195,6 +1195,8 @@ static int rk_iommu_probe(struct platform_device *pdev) if (!dma_dev) dma_dev = &pdev->dev; + bus_set_iommu(&platform_bus_type, &rk_iommu_ops); + return 0; err_remove_sysfs: iommu_device_sysfs_remove(&iommu->iommu); @@ -1220,19 +1222,6 @@ static struct platform_driver rk_iommu_driver = { static int __init rk_iommu_init(void) { - struct device_node *np; - int ret; - - np = of_find_matching_node(NULL, rk_iommu_dt_ids); - if (!np) - return 0; - - of_node_put(np); - - ret = bus_set_iommu(&platform_bus_type, &rk_iommu_ops); - if (ret) - return ret; - return platform_driver_register(&rk_iommu_driver); } subsys_initcall(rk_iommu_init);