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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 56970C10F29 for ; Tue, 17 Mar 2020 11:20:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2B6B220736 for ; Tue, 17 Mar 2020 11:20:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1584444042; bh=vNR8UdTpnd+MdKXM3RRc5qpDJLFIBrFnvSXpXWI3GSo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=PE6ZZcQGSV/5Y/xk6x/J4x58jqvSH1pyu+p8gwIFnLZp8s0Uwr+0a+j9iACI30Cu2 diEVKys49dbEXQ24X06GHvfTxkVsSJwkIKBexW5cGGVrdCbvdsdfbhvRkTZfJ+wAhg HNBkbuxUHvDwXPe6D+oP3Gemoyy+4CB747/EDBng= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727128AbgCQLAS (ORCPT ); Tue, 17 Mar 2020 07:00:18 -0400 Received: from mail.kernel.org ([198.145.29.99]:39362 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727576AbgCQLAQ (ORCPT ); Tue, 17 Mar 2020 07:00:16 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0FA8920719; Tue, 17 Mar 2020 11:00:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1584442816; bh=vNR8UdTpnd+MdKXM3RRc5qpDJLFIBrFnvSXpXWI3GSo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rYkj1VU/ZvdZUDiSayLCwd3w49cLl/9khTxIryx9tL6eDfk2rg7qdeBGo+0+fOdrH +OhfTlPfUionjBpzgCTxAXFjeT+vSM3tXWVNb/Zvez4u5va079RpDku0dYu/2e8QhU aqXR5YDihGkpG7NYNtQ9/IEG5g37FnSaBWXSbt6w= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Charles Keepax , Linus Walleij Subject: [PATCH 4.19 72/89] pinctrl: core: Remove extra kref_get which blocks hogs being freed Date: Tue, 17 Mar 2020 11:55:21 +0100 Message-Id: <20200317103308.238331165@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200317103259.744774526@linuxfoundation.org> References: <20200317103259.744774526@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Charles Keepax commit aafd56fc79041bf36f97712d4b35208cbe07db90 upstream. kref_init starts with the reference count at 1, which will be balanced by the pinctrl_put in pinctrl_unregister. The additional kref_get in pinctrl_claim_hogs will increase this count to 2 and cause the hogs to not get freed when pinctrl_unregister is called. Fixes: 6118714275f0 ("pinctrl: core: Fix pinctrl_register_and_init() with pinctrl_enable()") Signed-off-by: Charles Keepax Link: https://lore.kernel.org/r/20200228154142.13860-1-ckeepax@opensource.cirrus.com Signed-off-by: Linus Walleij Signed-off-by: Greg Kroah-Hartman --- drivers/pinctrl/core.c | 1 - 1 file changed, 1 deletion(-) --- a/drivers/pinctrl/core.c +++ b/drivers/pinctrl/core.c @@ -2008,7 +2008,6 @@ static int pinctrl_claim_hogs(struct pin return PTR_ERR(pctldev->p); } - kref_get(&pctldev->p->users); pctldev->hog_default = pinctrl_lookup_state(pctldev->p, PINCTRL_STATE_DEFAULT); if (IS_ERR(pctldev->hog_default)) {