From nobody Tue Jun 30 11:09:41 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6CCB6C433EF for ; Wed, 19 Jan 2022 08:21:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346044AbiASIVm (ORCPT ); Wed, 19 Jan 2022 03:21:42 -0500 Received: from azure-sdnproxy.icoremail.net ([52.237.72.81]:57902 "HELO azure-sdnproxy-1.icoremail.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with SMTP id S238265AbiASIVl (ORCPT ); Wed, 19 Jan 2022 03:21:41 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=pku.edu.cn; s=dkim; h=Received:From:To:Cc:Subject:Date: Message-Id; bh=FeyDaeCUE9Q9PPbCn5K7YqRumBgy06OD99LoSc0+DUU=; b=e +PV6G/BFn9XXMOhXoVD4lC/8uxoBEbV4Q32h9sMlhufQ22lvk4jaNYk722AYUgg6 Koz2n9JMZEXdSQyX/CFulJb5+HO0Z2z2kepg2itlMTaqwSJECgMqFt7wBR2/CgK1 QBZySMWsA5hEIbjRmOyHndkwuJ/9rQ1J6oI1ClUUuk= Received: from localhost (unknown [10.129.21.144]) by front01 (Coremail) with SMTP id 5oFpogB3fjqKyedhmGh8AA--.52130S2; Wed, 19 Jan 2022 16:19:23 +0800 (CST) From: Yongzhi Liu To: thierry.reding@gmail.com, sam@ravnborg.org, airlied@linux.ie, daniel@ffwll.ch Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Yongzhi Liu Subject: [PATCH] drm/panel: Add missing pm_rumtime_resume_and_get Date: Wed, 19 Jan 2022 00:19:21 -0800 Message-Id: <1642580361-27552-1-git-send-email-lyz_cs@pku.edu.cn> X-Mailer: git-send-email 2.7.4 X-CM-TRANSID: 5oFpogB3fjqKyedhmGh8AA--.52130S2 X-Coremail-Antispam: 1UD129KBjvJXoW7ZryUKw47WF1xurW3Cw48WFg_yoW8WFW5pr 45XFWIyFyrtrW0yrW7AFn7XFy5uayIgFW7tF98Gan8Za15AF4jy3s8trWaqF1DArnxCFWa qFs7Kw43Z3Wayr7anT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUkK1xkIjI8I6I8E6xAIw20EY4v20xvaj40_Wr0E3s1l1IIY67AE w4v_Jr0_Jr4l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2 IY67AKxVWDJVCq3wA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxVW8Jr0_Cr1UM28EF7xvwVC2 z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s0DM2AIxVAIcxkEcV Aq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xIIjxv20xvE14v26r1j 6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64 vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7MxkIecxEwVCm-wCF04k20xvY0x0EwIxGrwCF 04k20xvE74AGY7Cv6cx26w4UJr1UMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrV AFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUAVWUtwCI c40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267 AKxVWUJVW8JwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr0_ Gr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7VUbXdbU UUUUU== X-CM-SenderInfo: irzqijirqukmo6sn3hxhgxhubq/1tbiAwEKBlPy7uA+KwAXsj Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" pm_runtime_put_autosuspend() and pm_runtime_put_sync_suspend() will decrease the rumtime PM counter even when it returns an error. Thus a pairing decrement is needed to prevent refcount leak. Fix this by adding pm_runtime_resume_and_get() on error handling path. Signed-off-by: Yongzhi Liu --- drivers/gpu/drm/panel/panel-samsung-atna33xc20.c | 4 +++- drivers/gpu/drm/panel/panel-simple.c | 4 +++- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/panel/panel-samsung-atna33xc20.c b/drivers/gpu= /drm/panel/panel-samsung-atna33xc20.c index 20666b6..dd7e3f1 100644 --- a/drivers/gpu/drm/panel/panel-samsung-atna33xc20.c +++ b/drivers/gpu/drm/panel/panel-samsung-atna33xc20.c @@ -189,8 +189,10 @@ static int atana33xc20_unprepare(struct drm_panel *pan= el) * to get the EDID or otherwise send DP AUX commands to the panel. */ ret =3D pm_runtime_put_sync_suspend(panel->dev); - if (ret < 0) + if (ret < 0) { + pm_runtime_resume_and_get(panel->dev); return ret; + } p->prepared =3D false; =20 return 0; diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/p= anel-simple.c index 9e46db5..ad18965 100644 --- a/drivers/gpu/drm/panel/panel-simple.c +++ b/drivers/gpu/drm/panel/panel-simple.c @@ -323,8 +323,10 @@ static int panel_simple_unprepare(struct drm_panel *pa= nel) =20 pm_runtime_mark_last_busy(panel->dev); ret =3D pm_runtime_put_autosuspend(panel->dev); - if (ret < 0) + if (ret < 0) { + pm_runtime_resume_and_get(panel->dev); return ret; + } p->prepared =3D false; =20 return 0; --=20 2.7.4