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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 06C69C282C8 for ; Mon, 28 Jan 2019 15:55:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BFAA52177E for ; Mon, 28 Jan 2019 15:55:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548690957; bh=VJHfTeWE69BzaokekwoAcSIM5OmZnXbFokFQuWGBqaQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=uboAV1+c6aHXUbB+lM/58ypuF36FoO2GfJ2jfTFwYMGUGfaVBaGZNA6nzMO6zALho xl+SmoGALuTHN8tgGtJ+LwiM/H+REQnyKikv1R9AFktC11FRoGA1arp7VQiIZonlGt epGDOvYZJuFA8mVrb+SxvZqfvAL72HNOKlxQu/WY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729995AbfA1Pz4 (ORCPT ); Mon, 28 Jan 2019 10:55:56 -0500 Received: from mail.kernel.org ([198.145.29.99]:41682 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728020AbfA1Pzw (ORCPT ); Mon, 28 Jan 2019 10:55:52 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6C5BD21741; Mon, 28 Jan 2019 15:55:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548690952; bh=VJHfTeWE69BzaokekwoAcSIM5OmZnXbFokFQuWGBqaQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vYUT9ILFK+9b04Z/RF4STwJW8Mld2TEuBRABVROU5kPmMj6vlEUm6Gggf8RiVG6sG 9qICUHEaebRp3dwr8K2iTfTOVvLEWZi9kMXwy5PDfNGOOJ98UE3bXJDm5+oeDu4ccV Ld3E4FLX51sBL1/ScI3he8vnwPlLmU3aVoccQG60= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Alexey Khoroshilov , Alexander Shiyan , Bartlomiej Zolnierkiewicz , Sasha Levin , dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.20 244/304] video: clps711x-fb: release disp device node in probe() Date: Mon, 28 Jan 2019 10:42:41 -0500 Message-Id: <20190128154341.47195-244-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190128154341.47195-1-sashal@kernel.org> References: <20190128154341.47195-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Alexey Khoroshilov [ Upstream commit fdac751355cd76e049f628afe6acb8ff4b1399f7 ] clps711x_fb_probe() increments refcnt of disp device node by of_parse_phandle() and leaves it undecremented on both successful and error paths. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov Cc: Alexander Shiyan Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Sasha Levin --- drivers/video/fbdev/clps711x-fb.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/video/fbdev/clps711x-fb.c b/drivers/video/fbdev/clps711x-fb.c index ff561073ee4e..42f909618f04 100644 --- a/drivers/video/fbdev/clps711x-fb.c +++ b/drivers/video/fbdev/clps711x-fb.c @@ -287,14 +287,17 @@ static int clps711x_fb_probe(struct platform_device *pdev) } ret = of_get_fb_videomode(disp, &cfb->mode, OF_USE_NATIVE_MODE); - if (ret) + if (ret) { + of_node_put(disp); goto out_fb_release; + } of_property_read_u32(disp, "ac-prescale", &cfb->ac_prescale); cfb->cmap_invert = of_property_read_bool(disp, "cmap-invert"); ret = of_property_read_u32(disp, "bits-per-pixel", &info->var.bits_per_pixel); + of_node_put(disp); if (ret) goto out_fb_release; -- 2.19.1