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=-18.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 3ABF0C433ED for ; Fri, 14 May 2021 11:51:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 14EEF61408 for ; Fri, 14 May 2021 11:51:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229445AbhENLw1 (ORCPT ); Fri, 14 May 2021 07:52:27 -0400 Received: from mail.kernel.org ([198.145.29.99]:33482 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232300AbhENLw0 (ORCPT ); Fri, 14 May 2021 07:52:26 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 0E6CB6145D; Fri, 14 May 2021 11:51:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620993075; bh=kz1BDm7z8fIltgHA6x06ZGgr+rpZvBQqHlyrbI53hK0=; h=Subject:To:From:Date:From; b=svpZaqcEetQVa4TRLlwE1XUn+ZkhU4B5F7L/oEwbrFcIvGibhqxD41+H7rkOjSZqD joAi1Lx61YXBhKdHuwyt9DtGDyf48PhH5CydIC8zIFd3PFf1YPhF45m+d6VEoQwl4z +aHe3inowG6NDZ1GZsVx6NBImgYmxWsE8YFXyAFs= Subject: patch "misc: eeprom: at24: check suspend status before disable regulator" added to char-misc-linus To: hsinyi@chromium.org, bgolaszewski@baylibre.com, gregkh@linuxfoundation.org, stable@vger.kernel.org From: Date: Fri, 14 May 2021 13:51:13 +0200 Message-ID: <162099307320761@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org This is a note to let you know that I've just added the patch titled misc: eeprom: at24: check suspend status before disable regulator to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >From 2962484dfef8dbb7f9059822bc26ce8a04d0e47c Mon Sep 17 00:00:00 2001 From: Hsin-Yi Wang Date: Tue, 20 Apr 2021 21:30:50 +0800 Subject: misc: eeprom: at24: check suspend status before disable regulator cd5676db0574 ("misc: eeprom: at24: support pm_runtime control") disables regulator in runtime suspend. If runtime suspend is called before regulator disable, it will results in regulator unbalanced disabling. Fixes: cd5676db0574 ("misc: eeprom: at24: support pm_runtime control") Cc: stable Acked-by: Bartosz Golaszewski Signed-off-by: Hsin-Yi Wang Link: https://lore.kernel.org/r/20210420133050.377209-1-hsinyi@chromium.org Signed-off-by: Greg Kroah-Hartman --- drivers/misc/eeprom/at24.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c index 926408b41270..7a6f01ace78a 100644 --- a/drivers/misc/eeprom/at24.c +++ b/drivers/misc/eeprom/at24.c @@ -763,7 +763,8 @@ static int at24_probe(struct i2c_client *client) at24->nvmem = devm_nvmem_register(dev, &nvmem_config); if (IS_ERR(at24->nvmem)) { pm_runtime_disable(dev); - regulator_disable(at24->vcc_reg); + if (!pm_runtime_status_suspended(dev)) + regulator_disable(at24->vcc_reg); return PTR_ERR(at24->nvmem); } @@ -774,7 +775,8 @@ static int at24_probe(struct i2c_client *client) err = at24_read(at24, 0, &test_byte, 1); if (err) { pm_runtime_disable(dev); - regulator_disable(at24->vcc_reg); + if (!pm_runtime_status_suspended(dev)) + regulator_disable(at24->vcc_reg); return -ENODEV; } -- 2.31.1