From patchwork Tue Jun 13 05:25:40 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeffy Chen X-Patchwork-Id: 9783129 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 1A67C602C9 for ; Tue, 13 Jun 2017 05:25:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0CE12286AA for ; Tue, 13 Jun 2017 05:25:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id F2C82286D1; Tue, 13 Jun 2017 05:25:55 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1A1BC286AA for ; Tue, 13 Jun 2017 05:25:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752092AbdFMFZy (ORCPT ); Tue, 13 Jun 2017 01:25:54 -0400 Received: from regular1.263xmail.com ([211.150.99.130]:40312 "EHLO regular1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752003AbdFMFZx (ORCPT ); Tue, 13 Jun 2017 01:25:53 -0400 Received: from jeffy.chen?rock-chips.com (unknown [192.168.167.152]) by regular1.263xmail.com (Postfix) with ESMTP id A6038B1DE; Tue, 13 Jun 2017 13:25:46 +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 ESMTP id 5D0A9393; Tue, 13 Jun 2017 13:25:44 +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: <0c0bc626742abca26db4c5dcc5f88c7d> 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 2172300IWMO; Tue, 13 Jun 2017 13:25:46 +0800 (CST) From: Jeffy Chen To: linux-kernel@vger.kernel.org, broonie@kernel.org Cc: briannorris@chromium.org, dianders@chromium.org, heiko@sntech.de, Jeffy Chen , linux-spi@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 1/4] spi: rockchip: fix error handling when probe Date: Tue, 13 Jun 2017 13:25:40 +0800 Message-Id: <1497331543-8565-1-git-send-email-jeffy.chen@rock-chips.com> X-Mailer: git-send-email 2.1.4 Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP After failed to request dma tx chain, we need to disable pm_runtime. Also cleanup error labels for better readability. Signed-off-by: Jeffy Chen Reviewed-by: Brian Norris --- Changes in v2: None drivers/spi/spi-rockchip.c | 27 ++++++++++++++------------- 1 file changed, 14 insertions(+), 13 deletions(-) diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c index acf31f3..bab9b13 100644 --- a/drivers/spi/spi-rockchip.c +++ b/drivers/spi/spi-rockchip.c @@ -684,33 +684,33 @@ static int rockchip_spi_probe(struct platform_device *pdev) rs->regs = devm_ioremap_resource(&pdev->dev, mem); if (IS_ERR(rs->regs)) { ret = PTR_ERR(rs->regs); - goto err_ioremap_resource; + goto err_put_master; } rs->apb_pclk = devm_clk_get(&pdev->dev, "apb_pclk"); if (IS_ERR(rs->apb_pclk)) { dev_err(&pdev->dev, "Failed to get apb_pclk\n"); ret = PTR_ERR(rs->apb_pclk); - goto err_ioremap_resource; + goto err_put_master; } rs->spiclk = devm_clk_get(&pdev->dev, "spiclk"); if (IS_ERR(rs->spiclk)) { dev_err(&pdev->dev, "Failed to get spi_pclk\n"); ret = PTR_ERR(rs->spiclk); - goto err_ioremap_resource; + goto err_put_master; } ret = clk_prepare_enable(rs->apb_pclk); if (ret) { dev_err(&pdev->dev, "Failed to enable apb_pclk\n"); - goto err_ioremap_resource; + goto err_put_master; } ret = clk_prepare_enable(rs->spiclk); if (ret) { dev_err(&pdev->dev, "Failed to enable spi_clk\n"); - goto err_spiclk_enable; + goto err_disable_apbclk; } spi_enable_chip(rs, 0); @@ -728,7 +728,7 @@ static int rockchip_spi_probe(struct platform_device *pdev) if (!rs->fifo_len) { dev_err(&pdev->dev, "Failed to get fifo length\n"); ret = -EINVAL; - goto err_get_fifo_len; + goto err_disable_spiclk; } spin_lock_init(&rs->lock); @@ -755,7 +755,7 @@ static int rockchip_spi_probe(struct platform_device *pdev) /* Check tx to see if we need defer probing driver */ if (PTR_ERR(rs->dma_tx.ch) == -EPROBE_DEFER) { ret = -EPROBE_DEFER; - goto err_get_fifo_len; + goto err_disable_pm_runtime; } dev_warn(rs->dev, "Failed to request TX DMA channel\n"); rs->dma_tx.ch = NULL; @@ -786,23 +786,24 @@ static int rockchip_spi_probe(struct platform_device *pdev) ret = devm_spi_register_master(&pdev->dev, master); if (ret) { dev_err(&pdev->dev, "Failed to register master\n"); - goto err_register_master; + goto err_free_dma_rx; } return 0; -err_register_master: - pm_runtime_disable(&pdev->dev); +err_free_dma_rx: if (rs->dma_rx.ch) dma_release_channel(rs->dma_rx.ch); err_free_dma_tx: if (rs->dma_tx.ch) dma_release_channel(rs->dma_tx.ch); -err_get_fifo_len: +err_disable_pm_runtime: + pm_runtime_disable(&pdev->dev); +err_disable_spiclk: clk_disable_unprepare(rs->spiclk); -err_spiclk_enable: +err_disable_apbclk: clk_disable_unprepare(rs->apb_pclk); -err_ioremap_resource: +err_put_master: spi_master_put(master); return ret;