From patchwork Wed Nov 9 14:29:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ricardo Ribalda X-Patchwork-Id: 623183 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 1930AC4332F for ; Wed, 9 Nov 2022 14:30:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231259AbiKIOaX (ORCPT ); Wed, 9 Nov 2022 09:30:23 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43846 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231576AbiKIOaR (ORCPT ); Wed, 9 Nov 2022 09:30:17 -0500 Received: from mail-ej1-x632.google.com (mail-ej1-x632.google.com [IPv6:2a00:1450:4864:20::632]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 44DA917ABB for ; Wed, 9 Nov 2022 06:30:16 -0800 (PST) Received: by mail-ej1-x632.google.com with SMTP id f5so47122263ejc.5 for ; Wed, 09 Nov 2022 06:30:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=cc:to:message-id:date:from:content-transfer-encoding:mime-version :subject:from:to:cc:subject:date:message-id:reply-to; bh=N96rWukkzzft84T2ilUpjkniGJmFniZsxB7jb54ifXs=; b=NUQruEBYuKGoATQoEgq8HnQG7zmavO8XD1UrtBSLzg8JU522IgpPOEXmqcF4u0Ez5v FBMEDkmVUu9wjt/3Ew9uAOCPrOlaNYbTsAfsDYXE+SPqBP+oh8kv9+hq7VU9ZZjR7ljQ 9rZGRPv6nzYTlfPZ0UlpecP7Lq8FdNJsBerVM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:message-id:date:from:content-transfer-encoding:mime-version :subject:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=N96rWukkzzft84T2ilUpjkniGJmFniZsxB7jb54ifXs=; b=hinc5oJs/uq/6NxVo6he4jpIB2yoi8MAov+jG9gz+YqhBz9o296QjAlZjpy5yQr5Vq pemsx2GD8Gms9NEnCEvOPP+Qs9Y/FpDCGw5JnslewmDt3NxOqbCxwoSoFfnEGR/hdz5x sE5aQ7k/TxmKHYvEiFcWvYGdxhsYPCaucFKh0z9upYyYyVPW4OdteX91BmQ3lVFnpWaG fbvX0PeXgydXwgpjRIcaWP4BNqN4FIWE5z0Jfzr4R8BRHhFEN4WoH6JaRS/bDbzDZFVs /YwuT/aAjwUArpwXzT9JsZ7nGOKQdBWS0lDPvLe5PhFhfxwCBRrVyJuHN9LRpFYLbc9B zaog== X-Gm-Message-State: ACrzQf38v435qR8WzCK+yzWJ4KhVVeJvhCE4V0fxmV5o7XXkIGwrlOW0 FIj//1hG+a3nCTPRLi+64gnHow== X-Google-Smtp-Source: AMsMyM4ljNakYGb8FEwYQ+ua0vOjv8/+n3jDbN6hIZptU4+jxoR/3FXruQkLjWdo4N8Xgm8mp6JuCw== X-Received: by 2002:a17:906:6a02:b0:7ae:2793:aa19 with SMTP id qw2-20020a1709066a0200b007ae2793aa19mr29371804ejc.265.1668004214873; Wed, 09 Nov 2022 06:30:14 -0800 (PST) Received: from alco.roam.corp.google.com ([2620:0:1059:10:7487:46db:8e12:c768]) by smtp.gmail.com with ESMTPSA id d25-20020aa7c1d9000000b0044dbecdcd29sm7020389edp.12.2022.11.09.06.30.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Nov 2022 06:30:14 -0800 (PST) Subject: [PATCH v1 0/1] i2c: Restore power status of device if probe fails MIME-Version: 1.0 X-b4-tracking: H4sIAFu5a2MC/w3LQQqAIBBA0avErBtwhAi7zWhjDoiBki2ku+fywf8DmlSVBscyoErXpneZoHWBkL hcgnpOgzXWEhmHagO+rF2Qxe1RmCL5DWbvuQn6yiWkeZQn5+/7Adt+K05gAAAA From: Ricardo Ribalda Date: Wed, 09 Nov 2022 15:29:47 +0100 Message-Id: <20221109-i2c-waive-v1-0-ed70a99b990d@chromium.org> To: Tomasz Figa , Sakari Ailus , "Rafael J. Wysocki" , Wolfram Sang Cc: linux-kernel@vger.kernel.org, Ricardo Ribalda , Hidenori Kobayashi , linux-i2c@vger.kernel.org X-Mailer: b4 0.11.0-dev-d93f8 X-Developer-Signature: v=1; a=openpgp-sha256; l=961; i=ribalda@chromium.org; h=from:subject:message-id; bh=xbF/MIUAKcQD4clS31BaNJtsnvcssnr11NYtRC214vo=; b=owEBbQKS/ZANAwAKAdE30T7POsSIAcsmYgBja7liJtRWY4suMhjLbNI+ldyebAoNrPAn2LUdX8j9 Uvtt7lOJAjMEAAEKAB0WIQREDzjr+/4oCDLSsx7RN9E+zzrEiAUCY2u5YgAKCRDRN9E+zzrEiJM4EA CcSqPambhLY9adGX94xkF46+nnAl704+gj6irsEN3zkkNVyfOrjYjxk5pZF0888rRnySyB5SSwxiv2 mH6WduT2kfnm1Kb1/CU8XJ+kM5yZJPEEsZJ85ZTQZuuqONVfPaIar7LcfO+MxjHjEOpu00yJ80fClX diCewkAjl18jlmBuIliVjGDHoiQ73ZIVP0laKz7/OcYT9kbAwBpStcHrklzCOyxoxyoRiWi88xuIfp yvKpPUEkyXbk7vvJAXb3uOjFEBoTon9enLRX17HuI6nXrCJc2GjZ3SnJNlQFWsaHPYTUTm2HoydSHW 7AZBLEQvSWY5P2zQJCXSUD4x/fjfuAx3hx8viF0nDm1s83+Z/OeJ+hpop6rSIVmA+vWU3aXM0Z3Tnh 2RD5fH36rK6VFe4pAu2SwUvueSfEIaO8V3nrHpejcHAKnDnU3tTVJRySfq1FeTAGplTJCi575zH2oG 5a9xtXh26OP4zzZG/EWPjEPxBdHqDaJ5kp9jUvPF4Figpt5Z1bfN4bx0PdOA/AnGoCkgwMINgvR8da hYo6+tao7Pcuj9fv2GXO0yQRL1GDuGJ2fketb+bM9L3wuYaKlO1/JqK3Bu8vWbKCNIWYZaII7ZXk6R P+mZbpBId7dnB93XawBMIcjeYjfqD3hq8GuZsJtxDC6flN7ECRdhkKnNeUsQ== X-Developer-Key: i=ribalda@chromium.org; a=openpgp; fpr=9EC3BB66E2FC129A6F90B39556A0D81F9F782DA9 Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org We have discovered that some power lines were always on even if the devices on that power line was not used. This happens because we failed to probe a device on the i2c bus, and the ACPI Power Resource were never turned off. This patch tries to fix this issue. To: Wolfram Sang To: Sakari Ailus To: Tomasz Figa To: "Rafael J. Wysocki" Cc: Hidenori Kobayashi Cc: linux-i2c@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Ricardo Ribalda --- Ricardo Ribalda (1): i2c: Restore initial power state on probe failure drivers/i2c/i2c-core-base.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) --- base-commit: f141df371335645ce29a87d9683a3f79fba7fd67 change-id: 20221109-i2c-waive-ae97fea1f1b5 Best regards,