From patchwork Sat Mar 27 07:38:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe JAILLET X-Patchwork-Id: 410714 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham 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 62AA3C433C1 for ; Sat, 27 Mar 2021 07:39:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 16298619B6 for ; Sat, 27 Mar 2021 07:39:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230239AbhC0HjC (ORCPT ); Sat, 27 Mar 2021 03:39:02 -0400 Received: from smtp06.smtpout.orange.fr ([80.12.242.128]:24682 "EHLO smtp.smtpout.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231190AbhC0Hi5 (ORCPT ); Sat, 27 Mar 2021 03:38:57 -0400 Received: from localhost.localdomain ([90.126.11.170]) by mwinf5d29 with ME id lKev2400K3g7mfN03KevSj; Sat, 27 Mar 2021 08:38:56 +0100 X-ME-Helo: localhost.localdomain X-ME-Auth: Y2hyaXN0b3BoZS5qYWlsbGV0QHdhbmFkb28uZnI= X-ME-Date: Sat, 27 Mar 2021 08:38:56 +0100 X-ME-IP: 90.126.11.170 From: Christophe JAILLET To: balbi@kernel.org, gregkh@linuxfoundation.org, krzysztof.kozlowski@canonical.com, nathan@kernel.org, arnd@arndb.de, gustavoars@kernel.org, weiyongjun1@huawei.com Cc: linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET Subject: [PATCH v3 2/2] usb: gadget: s3c: Fix the error handling path in 's3c2410_udc_probe()' Date: Sat, 27 Mar 2021 08:38:53 +0100 Message-Id: <2bee52e4ce968f48b4c32545cf8f3b2ab825ba82.1616830026.git.christophe.jaillet@wanadoo.fr> X-Mailer: git-send-email 2.27.0 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Some 'clk_prepare_enable()' and 'clk_get()' must be undone in the error handling path of the probe function, as already done in the remove function. Fixes: 3fc154b6b813 ("USB Gadget driver for Samsung s3c2410 ARM SoC") Signed-off-by: Christophe JAILLET Reviewed-by: Krzysztof Kozlowski --- v2: Fix a stupid error in the hash in Fixes: v3: Add Reviewed-by: --- drivers/usb/gadget/udc/s3c2410_udc.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/usb/gadget/udc/s3c2410_udc.c b/drivers/usb/gadget/udc/s3c2410_udc.c index b81979b3bdb6..b154b62abefa 100644 --- a/drivers/usb/gadget/udc/s3c2410_udc.c +++ b/drivers/usb/gadget/udc/s3c2410_udc.c @@ -1750,7 +1750,8 @@ static int s3c2410_udc_probe(struct platform_device *pdev) udc_clock = clk_get(NULL, "usb-device"); if (IS_ERR(udc_clock)) { dev_err(dev, "failed to get udc clock source\n"); - return PTR_ERR(udc_clock); + retval = PTR_ERR(udc_clock); + goto err_usb_bus_clk; } clk_prepare_enable(udc_clock); @@ -1773,7 +1774,7 @@ static int s3c2410_udc_probe(struct platform_device *pdev) base_addr = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(base_addr)) { retval = PTR_ERR(base_addr); - goto err; + goto err_udc_clk; } the_controller = udc; @@ -1791,7 +1792,7 @@ static int s3c2410_udc_probe(struct platform_device *pdev) if (retval != 0) { dev_err(dev, "cannot get irq %i, err %d\n", irq_usbd, retval); retval = -EBUSY; - goto err; + goto err_udc_clk; } dev_dbg(dev, "got irq %i\n", irq_usbd); @@ -1862,7 +1863,14 @@ static int s3c2410_udc_probe(struct platform_device *pdev) gpio_free(udc_info->vbus_pin); err_int: free_irq(irq_usbd, udc); -err: +err_udc_clk: + clk_disable_unprepare(udc_clock); + clk_put(udc_clock); + udc_clock = NULL; +err_usb_bus_clk: + clk_disable_unprepare(usb_bus_clock); + clk_put(usb_bus_clock); + usb_bus_clock = NULL; return retval; }