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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,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 238DDC636C9 for ; Thu, 15 Jul 2021 19:43:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0A08461278 for ; Thu, 15 Jul 2021 19:43:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244796AbhGOTqf (ORCPT ); Thu, 15 Jul 2021 15:46:35 -0400 Received: from mail.kernel.org ([198.145.29.99]:50954 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244210AbhGOTQO (ORCPT ); Thu, 15 Jul 2021 15:16:14 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 6106F613D1; Thu, 15 Jul 2021 19:12:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626376341; bh=2wcLH/MjR6vnjHJ+bCuMtovL+XwRk6NvzTwRJB2jEXI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=i6lXnQB3D/QbS8wHw1OTaOGyrK3GgqTAMAa1iEqJIXpEj8nmZltM3U8PAeV66UWej VKXLIjAXJ8ji9AeawSmjo4T+GgOPzVSASeXwEVty7bTSLk7vnz4QEw7ntLSrCrz2MH 9pXpJgIHeskKmKkrxu7YRRQ0McRgGqJ9B/3MIruI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andy Shevchenko , Ferry Toth , Chanwoo Choi Subject: [PATCH 5.13 230/266] extcon: intel-mrfld: Sync hardware and software state on init Date: Thu, 15 Jul 2021 20:39:45 +0200 Message-Id: <20210715182650.151022390@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210715182613.933608881@linuxfoundation.org> References: <20210715182613.933608881@linuxfoundation.org> User-Agent: quilt/0.66 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: Ferry Toth commit ecb5bdff901139850fb3ca3ae2d0cccac045bc52 upstream. extcon driver for Basin Cove PMIC shadows the switch status used for dwc3 DRD to detect a change in the switch position. This change initializes the status at probe time. Cc: stable@vger.kernel.org Fixes: 492929c54791 ("extcon: mrfld: Introduce extcon driver for Basin Cove PMIC") Reviewed-by: Andy Shevchenko Signed-off-by: Ferry Toth Signed-off-by: Chanwoo Choi Signed-off-by: Greg Kroah-Hartman --- drivers/extcon/extcon-intel-mrfld.c | 9 +++++++++ 1 file changed, 9 insertions(+) --- a/drivers/extcon/extcon-intel-mrfld.c +++ b/drivers/extcon/extcon-intel-mrfld.c @@ -197,6 +197,7 @@ static int mrfld_extcon_probe(struct pla struct intel_soc_pmic *pmic = dev_get_drvdata(dev->parent); struct regmap *regmap = pmic->regmap; struct mrfld_extcon_data *data; + unsigned int status; unsigned int id; int irq, ret; @@ -244,6 +245,14 @@ static int mrfld_extcon_probe(struct pla /* Get initial state */ mrfld_extcon_role_detect(data); + /* + * Cached status value is used for cable detection, see comments + * in mrfld_extcon_cable_detect(), we need to sync cached value + * with a real state of the hardware. + */ + regmap_read(regmap, BCOVE_SCHGRIRQ1, &status); + data->status = status; + mrfld_extcon_clear(data, BCOVE_MIRQLVL1, BCOVE_LVL1_CHGR); mrfld_extcon_clear(data, BCOVE_MCHGRIRQ1, BCOVE_CHGRIRQ_ALL);