From patchwork Wed Apr 7 05:43:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dinghao Liu X-Patchwork-Id: 12186923 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,URIBL_BLOCKED,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 2B895C433B4 for ; Wed, 7 Apr 2021 05:43:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E5070610D0 for ; Wed, 7 Apr 2021 05:43:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242317AbhDGFnf (ORCPT ); Wed, 7 Apr 2021 01:43:35 -0400 Received: from spam.zju.edu.cn ([61.164.42.155]:36666 "EHLO zju.edu.cn" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S229558AbhDGFne (ORCPT ); Wed, 7 Apr 2021 01:43:34 -0400 Received: from localhost.localdomain (unknown [10.192.24.118]) by mail-app4 (Coremail) with SMTP id cS_KCgC3+URyRm1giwuVAA--.60619S4; Wed, 07 Apr 2021 13:43:17 +0800 (CST) From: Dinghao Liu To: dinghao.liu@zju.edu.cn, kjlu@umn.edu Cc: Fabien Dessenne , Mauro Carvalho Chehab , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] media: platform: sti: Fix rumtime PM imbalance in regs_show Date: Wed, 7 Apr 2021 13:43:13 +0800 Message-Id: <20210407054313.5570-1-dinghao.liu@zju.edu.cn> X-Mailer: git-send-email 2.17.1 X-CM-TRANSID: cS_KCgC3+URyRm1giwuVAA--.60619S4 X-Coremail-Antispam: 1UD129KBjvdXoWrZrW3Aw4rurW8GF1kAr48tFb_yoWDXwc_Kw n8uF47Wr1Fkr1DKw47tw1rZa4IvFs8Wr1rGa1SqFWayayrur9rXry8ZFZ7uwnxX3yjv3sI krnIgFyxCrZxujkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbc8Fc2x0x2IEx4CE42xK8VAvwI8IcIk0rVWrJVCq3wAFIxvE14AK wVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK021l84ACjcxK6xIIjxv20x vE14v26w1j6s0DM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26F4UJVW0owA2z4x0Y4vEx4A2 jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq3wAS0I0E0xvYzxvE52 x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUGVWU XwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI4 8JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwCF04k20xvY0x0EwIxGrwCF04k20xvE74AGY7Cv 6cx26r4fKr1UJr1l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGw C20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r126r1DMIIYrxkI7VAKI48J MIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14v26r4j6F4UMI IF0xvE42xK8VAvwI8IcIk0rVWrJr0_WFyUJwCI42IY6I8E87Iv67AKxVWUJVW8JwCI42IY 6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIevJa73UjIFyTuYvjfUF9a9DUUUU X-CM-SenderInfo: qrrzjiaqtzq6lmxovvfxof0/1tbiAgoGBlZdtTQGhAAVsV Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org pm_runtime_get_sync() will increase the rumtime PM counter even it returns an error. Thus a pairing decrement is needed to prevent refcount leak. Fix this by replacing this API with pm_runtime_resume_and_get(), which will not change the runtime PM counter on error. Signed-off-by: Dinghao Liu --- drivers/media/platform/sti/bdisp/bdisp-debug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/platform/sti/bdisp/bdisp-debug.c b/drivers/media/platform/sti/bdisp/bdisp-debug.c index 2b270093009c..a27f638df11c 100644 --- a/drivers/media/platform/sti/bdisp/bdisp-debug.c +++ b/drivers/media/platform/sti/bdisp/bdisp-debug.c @@ -480,7 +480,7 @@ static int regs_show(struct seq_file *s, void *data) int ret; unsigned int i; - ret = pm_runtime_get_sync(bdisp->dev); + ret = pm_runtime_resume_and_get(bdisp->dev); if (ret < 0) { seq_puts(s, "Cannot wake up IP\n"); return 0;