From patchwork Mon Jan 31 10:56:49 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 538747 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 E1613C433EF for ; Mon, 31 Jan 2022 11:24:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349498AbiAaLYH (ORCPT ); Mon, 31 Jan 2022 06:24:07 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47084 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1378713AbiAaLUh (ORCPT ); Mon, 31 Jan 2022 06:20:37 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 53A84C061749; Mon, 31 Jan 2022 03:13:41 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E783661163; Mon, 31 Jan 2022 11:13:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BC9EAC340E8; Mon, 31 Jan 2022 11:13:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1643627620; bh=rPxomZGLw2T0AeFweigh+gNKt3+WX6XmgfGi+QBKnqY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CvFYE6hwEQbFuzfsPiTgh33vxgoB0Fn2kza/5J1Kbl+s/2UzOwo9xPw0Jqrz2Bm6M VlFSH9lzAH7pJf5aL8EXf/PKigFNSf+ysAUJXec8sdvApdUiDh/fwM0r6KBzuyiEO2 2lW+ttYY+fNePX2xP2D0Rs9AkzHp7B/c7gNvTqtw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Miaoqian Lin , Dmitry Baryshkov , Sasha Levin Subject: [PATCH 5.15 144/171] drm/msm/hdmi: Fix missing put_device() call in msm_hdmi_get_phy Date: Mon, 31 Jan 2022 11:56:49 +0100 Message-Id: <20220131105234.881065829@linuxfoundation.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220131105229.959216821@linuxfoundation.org> References: <20220131105229.959216821@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Miaoqian Lin [ Upstream commit 774fe0cd838d1b1419d41ab4ea0613c80d4ecbd7 ] The reference taken by 'of_find_device_by_node()' must be released when not needed anymore. Add the corresponding 'put_device()' in the error handling path. Fixes: e00012b256d4 ("drm/msm/hdmi: Make HDMI core get its PHY") Signed-off-by: Miaoqian Lin Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20220107085026.23831-1-linmq006@gmail.com Signed-off-by: Dmitry Baryshkov Signed-off-by: Sasha Levin --- drivers/gpu/drm/msm/hdmi/hdmi.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c index 737453b6e5966..94f948ef279d1 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c @@ -97,10 +97,15 @@ static int msm_hdmi_get_phy(struct hdmi *hdmi) of_node_put(phy_node); - if (!phy_pdev || !hdmi->phy) { + if (!phy_pdev) { DRM_DEV_ERROR(&pdev->dev, "phy driver is not ready\n"); return -EPROBE_DEFER; } + if (!hdmi->phy) { + DRM_DEV_ERROR(&pdev->dev, "phy driver is not ready\n"); + put_device(&phy_pdev->dev); + return -EPROBE_DEFER; + } hdmi->phy_dev = get_device(&phy_pdev->dev);