From patchwork Thu May 21 13:29:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dinghao Liu X-Patchwork-Id: 209749 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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 F1314C433DF for ; Thu, 21 May 2020 13:29:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D72A62078B for ; Thu, 21 May 2020 13:29:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729446AbgEUN3z (ORCPT ); Thu, 21 May 2020 09:29:55 -0400 Received: from spam.zju.edu.cn ([61.164.42.155]:18992 "EHLO zju.edu.cn" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728208AbgEUN3z (ORCPT ); Thu, 21 May 2020 09:29:55 -0400 Received: from localhost.localdomain (unknown [222.205.77.158]) by mail-app3 (Coremail) with SMTP id cC_KCgBnb4s+gsZeAGHpAA--.12833S4; Thu, 21 May 2020 21:29:38 +0800 (CST) From: Dinghao Liu To: dinghao.liu@zju.edu.cn, kjlu@umn.edu Cc: Sylwester Nawrocki , Mauro Carvalho Chehab , linux-media@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] media: platform: s3c-camif: Fix runtime PM imbalance on error Date: Thu, 21 May 2020 21:29:33 +0800 Message-Id: <20200521132933.16450-1-dinghao.liu@zju.edu.cn> X-Mailer: git-send-email 2.17.1 X-CM-TRANSID: cC_KCgBnb4s+gsZeAGHpAA--.12833S4 X-Coremail-Antispam: 1UD129KBjvJXoW7ZrWkur1furWrGw17XFyrZwb_yoW8GrykpF 4UGFyIkFW0g3yjyw1DJw17Xas5Ca9aqrZrWr9rWwnxZr1DCF9rtr4rAa4jqF1UJrWkta43 Zr1YqFW7Aa1rAFJanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUva1xkIjI8I6I8E6xAIw20EY4v20xvaj40_Wr0E3s1l1IIY67AE w4v_Jr0_Jr4l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2 IY67AKxVWDJVCq3wA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxVW8Jr0_Cr1UM28EF7xvwVC2 z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s0DM2AIxVAIcxkEcV Aq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xIIjxv20xvE14v26r1j 6r18McIj6I8E87Iv67AKxVW8JVWxJwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64 vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7MxkIecxEwVAFwVW5GwCF04k20xvY0x0EwIxG rwCF04k20xvE74AGY7Cv6cx26r4fKr1UJr1l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxV Aqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r12 6r1DMIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6x kF7I0E14v26r1j6r4UMIIF0xvE42xK8VAvwI8IcIk0rVWrZr1j6s0DMIIF0xvEx4A2jsIE 14v26r4j6F4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr1j6F4UJbIYCTnIWIevJa73UjIFyT uYvjfU1NVyUUUUU X-CM-SenderInfo: qrrzjiaqtzq6lmxovvfxof0/1tbiAg0HBlZdtOPdcwAKs2 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org pm_runtime_get_sync() increments the runtime PM usage counter even when it returns an error code. Thus a pairing decrement is needed on the error handling path to keep the counter balanced. Also, call pm_runtime_disable() when pm_runtime_get_sync() returns an error code. Signed-off-by: Dinghao Liu --- drivers/media/platform/s3c-camif/camif-core.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/media/platform/s3c-camif/camif-core.c b/drivers/media/platform/s3c-camif/camif-core.c index c6fbcd7036d6..ee624804862e 100644 --- a/drivers/media/platform/s3c-camif/camif-core.c +++ b/drivers/media/platform/s3c-camif/camif-core.c @@ -464,7 +464,7 @@ static int s3c_camif_probe(struct platform_device *pdev) ret = camif_media_dev_init(camif); if (ret < 0) - goto err_alloc; + goto err_pm; ret = camif_register_sensor(camif); if (ret < 0) @@ -498,10 +498,9 @@ static int s3c_camif_probe(struct platform_device *pdev) media_device_unregister(&camif->media_dev); media_device_cleanup(&camif->media_dev); camif_unregister_media_entities(camif); -err_alloc: +err_pm: pm_runtime_put(dev); pm_runtime_disable(dev); -err_pm: camif_clk_put(camif); err_clk: s3c_camif_unregister_subdev(camif);