From patchwork Sun Aug 15 16:43:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 497572 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT 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 C0EFFC4338F for ; Sun, 15 Aug 2021 16:44:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9FD4961179 for ; Sun, 15 Aug 2021 16:44:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229554AbhHOQpK (ORCPT ); Sun, 15 Aug 2021 12:45:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54652 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229453AbhHOQpK (ORCPT ); Sun, 15 Aug 2021 12:45:10 -0400 Received: from mail-lj1-x22e.google.com (mail-lj1-x22e.google.com [IPv6:2a00:1450:4864:20::22e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F303AC061764; Sun, 15 Aug 2021 09:44:39 -0700 (PDT) Received: by mail-lj1-x22e.google.com with SMTP id h17so23542987ljh.13; Sun, 15 Aug 2021 09:44:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=3wwUsxLg/WYVWZRouSC9RVU7s5eN3R0tYr25LfLFM90=; b=krHN11ptUcTM0bSyeL3R7FBs+/rji6khsY6D5GcUX2zGvF/Fb46yNQksf3mnTuREmm HjZ/En8LaZwEdKaOVyjDYDsRl+adOJbP/CbtMK+JAKs81GkfliCmOMNJN7DxJgB5UmaK bhBh7geOM4pXG4Un3nHABZppqdodYjXostI9/JE8AXcYfl2PsOBxFp08rJZpD+AGGeO9 MjULIuMP3l/oODb2SZprtzUodaG76wY5hb5S8mY9KEYBgJX29GAQn1Kzk8mqJDI6TmVg INm/KR+zizLye6Luj1wTvo/c5KYzlg5fsR+H9C/PGvy0tWwacMEyJH3/7szEegjh6NbN u03A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=3wwUsxLg/WYVWZRouSC9RVU7s5eN3R0tYr25LfLFM90=; b=a8U0cpDGi1rSLS88uJhnzAWmMQwN5VqBdW4/4SvPMlTiyy3pCsZIKpKR8jaS9PABJp ETVf7FjyS/aKqaqciPTv4Wx1h0p+SQjgdjKE0y/v+JlKprRS9FnM/tyutuktNOER5afe SKtkN1tzAhjIPXCY6OpW166Rsj8o7zHsO9fCc4RUUE3039zJhxbFaIwrzQpcdyURHRpI xlrXExQS00uhqD8bMHjd39LN6LPGwxAXrCjEvzUYzp3GNZrMZ9X3cH1Esw8N5YP4UR2I uFyuVlAD19/oBvaUypfp5DFId7ljwIbvGIWCI0X1xzQh0na5CmbMJ1VfN8E9bBztmNrH 6vkg== X-Gm-Message-State: AOAM531vLhAw+VDR6Q0CXsW15rczpTjf3C76yYsChwMg7+Jgbpa6YMa2 iORXFZzv3Iw5CCFg7CTagXs= X-Google-Smtp-Source: ABdhPJx43RlHuMFPhM62A7GycFIUk5ABVI3QoY2wgw3sQjDqHBEJQSYoUveLtCh7vmU93g5BkQw2Cg== X-Received: by 2002:a2e:9e8e:: with SMTP id f14mr9519683ljk.502.1629045878183; Sun, 15 Aug 2021 09:44:38 -0700 (PDT) Received: from localhost.localdomain (46-138-85-91.dynamic.spd-mgts.ru. [46.138.85.91]) by smtp.gmail.com with ESMTPSA id n7sm584907lfu.95.2021.08.15.09.44.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 15 Aug 2021 09:44:37 -0700 (PDT) From: Dmitry Osipenko To: Viresh Kumar , Stephen Boyd , Nishanth Menon Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH v1] opp: Drop empty-table checks from _put functions Date: Sun, 15 Aug 2021 19:43:44 +0300 Message-Id: <20210815164344.7796-1-digetx@gmail.com> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org The current_opp is released only when whole OPP table is released, otherwise it's only marked as removed by dev_pm_opp_remove_table(). Functions like dev_pm_opp_put_clkname() and dev_pm_opp_put_supported_hw() are checking whether OPP table is empty and it's not if current_opp is set since it holds the refcount of OPP, this produces a noisy warning from these functions about busy OPP table. Remove the checks to fix it. Cc: stable@vger.kernel.org Fixes: 81c4d8a3c414 ("opp: Keep track of currently programmed OPP") Signed-off-by: Dmitry Osipenko --- drivers/opp/core.c | 15 --------------- 1 file changed, 15 deletions(-) diff --git a/drivers/opp/core.c b/drivers/opp/core.c index b335c077f215..5543c54dacc5 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -1856,9 +1856,6 @@ void dev_pm_opp_put_supported_hw(struct opp_table *opp_table) if (unlikely(!opp_table)) return; - /* Make sure there are no concurrent readers while updating opp_table */ - WARN_ON(!list_empty(&opp_table->opp_list)); - kfree(opp_table->supported_hw); opp_table->supported_hw = NULL; opp_table->supported_hw_count = 0; @@ -1944,9 +1941,6 @@ void dev_pm_opp_put_prop_name(struct opp_table *opp_table) if (unlikely(!opp_table)) return; - /* Make sure there are no concurrent readers while updating opp_table */ - WARN_ON(!list_empty(&opp_table->opp_list)); - kfree(opp_table->prop_name); opp_table->prop_name = NULL; @@ -2056,9 +2050,6 @@ void dev_pm_opp_put_regulators(struct opp_table *opp_table) if (!opp_table->regulators) goto put_opp_table; - /* Make sure there are no concurrent readers while updating opp_table */ - WARN_ON(!list_empty(&opp_table->opp_list)); - if (opp_table->enabled) { for (i = opp_table->regulator_count - 1; i >= 0; i--) regulator_disable(opp_table->regulators[i]); @@ -2178,9 +2169,6 @@ void dev_pm_opp_put_clkname(struct opp_table *opp_table) if (unlikely(!opp_table)) return; - /* Make sure there are no concurrent readers while updating opp_table */ - WARN_ON(!list_empty(&opp_table->opp_list)); - clk_put(opp_table->clk); opp_table->clk = ERR_PTR(-EINVAL); @@ -2279,9 +2267,6 @@ void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table) if (unlikely(!opp_table)) return; - /* Make sure there are no concurrent readers while updating opp_table */ - WARN_ON(!list_empty(&opp_table->opp_list)); - opp_table->set_opp = NULL; mutex_lock(&opp_table->lock);