From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.7 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 D2316C433E1 for ; Sat, 23 May 2020 07:37:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B9FE32071C for ; Sat, 23 May 2020 07:37:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387627AbgEWHg5 (ORCPT ); Sat, 23 May 2020 03:36:57 -0400 Received: from mail.zju.edu.cn ([61.164.42.155]:8548 "EHLO zju.edu.cn" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2387471AbgEWHg5 (ORCPT ); Sat, 23 May 2020 03:36:57 -0400 Received: from localhost.localdomain (unknown [222.205.77.158]) by mail-app2 (Coremail) with SMTP id by_KCgAHGBCH0she5564AQ--.42805S4; Sat, 23 May 2020 15:36:44 +0800 (CST) From: Dinghao Liu To: dinghao.liu@zju.edu.cn, kjlu@umn.edu Cc: Todor Tomov , Andy Gross , Bjorn Andersson , Mauro Carvalho Chehab , linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] media: camss: csid: Fix runtime PM imbalance in csid_set_power Date: Sat, 23 May 2020 15:36:39 +0800 Message-Id: <20200523073639.7442-1-dinghao.liu@zju.edu.cn> X-Mailer: git-send-email 2.17.1 X-CM-TRANSID: by_KCgAHGBCH0she5564AQ--.42805S4 X-Coremail-Antispam: 1UD129KBjvdXoWrKrW7ZFW3Gr18JF1xWF4UArb_yoWfZwb_Gr 4DXF1xXrW5GrWktr4jkw13uryfXa95u3W8CF1ftF1ayayv9a4kWrykZr98Zwn3ur1jvr17 GFn8uFyfCr93ujkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbIxFc2x0x2IEx4CE42xK8VAvwI8IcIk0rVWrJVCq3wAFIxvE14AK wVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK021l84ACjcxK6xIIjxv20x vE14v26w1j6s0DM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26r4UJVWxJr1l84ACjcxK6I8E 87Iv67AKxVW0oVCq3wA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_GcCE3s1le2I262IYc4CY6c 8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_Jr0_ Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJVW8JwACjcxG0xvY0x0EwI xGrwACjI8F5VA0II8E6IAqYI8I648v4I1lc2xSY4AK67AK6r4xMxAIw28IcxkI7VAKI48J MxAIw28IcVCjz48v1sIEY20_GFWkJr1UJwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c 02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_ GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7 CjxVAFwI0_Jr0_Gr1lIxAIcVCF04k26cxKx2IYs7xG6rW3Jr0E3s1lIxAIcVC2z280aVAF wI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa 7VUbhiSPUUUUU== X-CM-SenderInfo: qrrzjiaqtzq6lmxovvfxof0/1tbiAgQJBlZdtORGcwABsm 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. Signed-off-by: Dinghao Liu --- drivers/media/platform/qcom/camss/camss-csid.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/qcom/camss/camss-csid.c b/drivers/media/platform/qcom/camss/camss-csid.c index a5ae85674ffb..8a247b6f5550 100644 --- a/drivers/media/platform/qcom/camss/camss-csid.c +++ b/drivers/media/platform/qcom/camss/camss-csid.c @@ -562,8 +562,10 @@ static int csid_set_power(struct v4l2_subdev *sd, int on) u32 hw_version; ret = pm_runtime_get_sync(dev); - if (ret < 0) + if (ret < 0) { + pm_runtime_put_sync(dev); return ret; + } ret = regulator_enable(csid->vdda); if (ret < 0) { -- 2.17.1