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=-7.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 EBC19C433DF for ; Tue, 11 Aug 2020 17:13:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C60502076B for ; Tue, 11 Aug 2020 17:13:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="Qiivl9DP" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729157AbgHKRNA (ORCPT ); Tue, 11 Aug 2020 13:13:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47790 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729070AbgHKRMx (ORCPT ); Tue, 11 Aug 2020 13:12:53 -0400 Received: from mail-pf1-x441.google.com (mail-pf1-x441.google.com [IPv6:2607:f8b0:4864:20::441]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5A6F3C061788 for ; Tue, 11 Aug 2020 10:12:53 -0700 (PDT) Received: by mail-pf1-x441.google.com with SMTP id d188so7970030pfd.2 for ; Tue, 11 Aug 2020 10:12:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=EsxvtyjzAtXg5sUDRqzZVjThz8mBMWSIwRhZo+xufo4=; b=Qiivl9DPtHJleh/lzS440/NKVhFXk3Yy1tWl92a2XnuJBOWGpKkpkGQl+QJmRmUPp0 sDzsmRLVz2R37jURWM0y4P3pazpzreDvZkb2OLaFUJlIpyR1cLyi7GqnTtnXBM0bio0o bcboHwDwhb+GNzKUDQCnK2Y9fT3vbSkutIvV8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=EsxvtyjzAtXg5sUDRqzZVjThz8mBMWSIwRhZo+xufo4=; b=FcAe1h6IuPihFjtkQBVKCp/IUprxF4voKfk/kGudOK5+wt+H3jlfhmUlYTqGAplqXw CKAEP2tK7qnVBkLMhLlJTQgZ9nQECkYZgAoCV6wvVAOpeLHsS2ClXTP6OehlmX0osTZ1 qE+6x5xgXqBvn7fR+c2dLv5sNr+3V+q37bt91T3autcwTaar/tLc+FFhjD5IgPg3HwHH yVBb3Gui20X8wyWaSdtxe4baZCPejm92xsoZ9GDFJ5lpWqBIGzBmIjJkyEkrpDrSQ26B KEmNkKt3DKlry/0GUkIRahlBlgEwKhWF+NboM8dtT87APIjhL7m12wVQx357Up4Y4clk +wJA== X-Gm-Message-State: AOAM531WavBxXwZM19WVJ5+eaLYxSpWi6Qr9bq1YeC8ElFi7bNh0OhQd ouahjvAyV3TVPxIna3NPQzok9A== X-Google-Smtp-Source: ABdhPJwCvHLKBQO7DAmqBUXQnYRCHWLQK/g0UXohIgdSsjGgJ0tacFUZGTDws11zC3WzqMh1Mwhn1Q== X-Received: by 2002:a63:ea41:: with SMTP id l1mr1644202pgk.419.1597165970845; Tue, 11 Aug 2020 10:12:50 -0700 (PDT) Received: from localhost ([2620:15c:202:1:f693:9fff:fef4:e70a]) by smtp.gmail.com with ESMTPSA id mp1sm3589375pjb.27.2020.08.11.10.12.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 11 Aug 2020 10:12:50 -0700 (PDT) Date: Tue, 11 Aug 2020 10:12:49 -0700 From: Matthias Kaehlcke To: Rajendra Nayak Cc: vireshk@kernel.org, nm@ti.com, sboyd@kernel.org, viresh.kumar@linaro.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org Subject: Re: [PATCH] opp: Fix dev_pm_opp_set_rate() to not return early Message-ID: <20200811171249.GL3191083@google.com> References: <1597043179-17903-1-git-send-email-rnayak@codeaurora.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <1597043179-17903-1-git-send-email-rnayak@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org On Mon, Aug 10, 2020 at 12:36:19PM +0530, Rajendra Nayak wrote: > dev_pm_opp_set_rate() can now be called with freq = 0 inorder > to either drop performance or bandwidth votes or to disable > regulators on platforms which support them. > In such cases, a subsequent call to dev_pm_opp_set_rate() with > the same frequency ends up returning early because 'old_freq == freq' > Instead make it fall through and put back the dropped performance > and bandwidth votes and/or enable back the regulators. > > Fixes: cd7ea582 ("opp: Make dev_pm_opp_set_rate() handle freq = 0 to drop performance votes") > Reported-by: Sajida Bhanu > Signed-off-by: Rajendra Nayak Tested-by: Matthias Kaehlcke Originally-reported-by: Matthias Kaehlcke https://patchwork.kernel.org/patch/11675369/#23514895 :P