From nobody Mon Sep 29 21:12:44 2025 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 0C72FC00140 for ; Tue, 16 Aug 2022 00:24:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350931AbiHPAYk (ORCPT ); Mon, 15 Aug 2022 20:24:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48116 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357429AbiHPAWj (ORCPT ); Mon, 15 Aug 2022 20:22:39 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8674A17CF81; Mon, 15 Aug 2022 13:33:52 -0700 (PDT) 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 ams.source.kernel.org (Postfix) with ESMTPS id 1B938B81197; Mon, 15 Aug 2022 20:33:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CA7E2C43470; Mon, 15 Aug 2022 20:33:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660595618; bh=SY2E2wXYD56yvEtvgGm7t9vW1KbZ8dTo7tvk4SOguHQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BEACWF9pR9EW/kcyc0GV+a6Qvm/BHGwWfq2DCfeJ3II369EFg4Frx3CApN/U6z+nU wv+IdEXmRjnAk+Ez41eWxASeEwMwEIXNi8U2KfFIhvHn8Bmc3Fwyw7J7GO/PaCXc8C 6Ayvb9c1Cfd4kIDFBVtlTQig+sl9mG8fPGdV+iEs= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Miaoqian Lin , Ulf Hansson , Sasha Levin Subject: [PATCH 5.19 0794/1157] mmc: sdhci-of-esdhc: Fix refcount leak in esdhc_signal_voltage_switch Date: Mon, 15 Aug 2022 20:02:30 +0200 Message-Id: <20220815180511.245407404@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220815180439.416659447@linuxfoundation.org> References: <20220815180439.416659447@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Miaoqian Lin [ Upstream commit b5899a3e2f783a27b268e38d37f9b24c71bddf45 ] of_find_matching_node() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak. of_node_put() checks null pointer. Fixes: ea35645a3c66 ("mmc: sdhci-of-esdhc: add support for signal voltage s= witch") Signed-off-by: Miaoqian Lin Link: https://lore.kernel.org/r/20220523144255.10310-1-linmq006@gmail.com Signed-off-by: Ulf Hansson Signed-off-by: Sasha Levin --- drivers/mmc/host/sdhci-of-esdhc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-= esdhc.c index d9dc41143bb3..8b3d8119f388 100644 --- a/drivers/mmc/host/sdhci-of-esdhc.c +++ b/drivers/mmc/host/sdhci-of-esdhc.c @@ -904,6 +904,7 @@ static int esdhc_signal_voltage_switch(struct mmc_host = *mmc, scfg_node =3D of_find_matching_node(NULL, scfg_device_ids); if (scfg_node) scfg_base =3D of_iomap(scfg_node, 0); + of_node_put(scfg_node); if (scfg_base) { sdhciovselcr =3D SDHCIOVSELCR_TGLEN | SDHCIOVSELCR_VSELVAL; --=20 2.35.1