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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BC869C00140 for ; Mon, 15 Aug 2022 19:18:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244753AbiHOTSh (ORCPT ); Mon, 15 Aug 2022 15:18:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58946 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344110AbiHOTPp (ORCPT ); Mon, 15 Aug 2022 15:15:45 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8F4EE3C8C5; Mon, 15 Aug 2022 11:37:48 -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 dfw.source.kernel.org (Postfix) with ESMTPS id E14F961124; Mon, 15 Aug 2022 18:37:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CCA99C4314B; Mon, 15 Aug 2022 18:37:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660588666; bh=23kjo+ZyjcPrClieeyY9KVDu2cu6m5ks6/6ZF6W79Iw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wTagRhAYFTtG0MPnQ/s/l/zuhpanh8GzeFyneKEKiBginfrSt1CoRS7HIWPRL4qu4 Adk/RsC7PhA7EB2aCbbX5UZrYUug3POc1BTgmCRVuHw1d58UrNkV++7iHE8PvfCA+n KNC9MM8fO8BKdAeDUChbXFSvV8gKzEtx1mLyuAd8= 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 5.15 476/779] mmc: sdhci-of-esdhc: Fix refcount leak in esdhc_signal_voltage_switch Date: Mon, 15 Aug 2022 20:02:00 +0200 Message-Id: <20220815180357.629409233@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220815180337.130757997@linuxfoundation.org> References: <20220815180337.130757997@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 switch") 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 0f3658b36513..04a37fd137ee 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 = of_find_matching_node(NULL, scfg_device_ids); if (scfg_node) scfg_base = of_iomap(scfg_node, 0); + of_node_put(scfg_node); if (scfg_base) { sdhciovselcr = SDHCIOVSELCR_TGLEN | SDHCIOVSELCR_VSELVAL; -- 2.35.1