From patchwork Sat Dec 30 01:12:54 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bryan O'Donoghue X-Patchwork-Id: 10137541 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 6FA4E6037D for ; Sat, 30 Dec 2017 01:17:58 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 62E962B551 for ; Sat, 30 Dec 2017 01:17:58 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 57E1D2B55D; Sat, 30 Dec 2017 01:17:58 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D886D2B551 for ; Sat, 30 Dec 2017 01:17:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751062AbdL3BNd (ORCPT ); Fri, 29 Dec 2017 20:13:33 -0500 Received: from mail-wm0-f66.google.com ([74.125.82.66]:38030 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751074AbdL3BN2 (ORCPT ); Fri, 29 Dec 2017 20:13:28 -0500 Received: by mail-wm0-f66.google.com with SMTP id 64so50100161wme.3 for ; Fri, 29 Dec 2017 17:13:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nexus-software-ie.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=q6pDQm7xp0Hd1BINliYnlkp+K0GsaNmV8NTXMawkE4Q=; b=tBI5LW8Ps3s98K9Vdmq+jfAYaX7xtAkuwcGev+nuIHsuonIXR63IV5LS5T8FbZXcsU fje2ss0tR7A08CNeJe75QG/JefZgTu1FbLfQy7R5yzvsTc9gJX/OmZNAvkbMOUeRRyEa 2Ff0D5tchAgNrv2FAPZiIofnPMDWf5lWOIXWIhdHUdBcsvI5pFba4FSVlTdFhpbupgC7 D6ajkpCeLAMlwpTC+Dtohg4t7U8Ys4ObVqi5/KgKzJNJUsQbf1fk1mfavel3NZc6ted7 AvdOzoCgVyqh3NhXse/KK+ocQYeyO9GqPJfTJL12TU6SmsJAZCUrglHUhkUBYJKHxGkA I0oA== 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:in-reply-to :references; bh=q6pDQm7xp0Hd1BINliYnlkp+K0GsaNmV8NTXMawkE4Q=; b=orTLe8tQP+mZFdMnFpPD2XBaGH5xVrGmTkzI/PyaOz2iijpSVPd81oiIL3OHQ7JyJ1 hOsdRRNAbqgkeoAbqMPU2rqDJ3V4veYd0Ch0xtw5MBz/2itpgX1UF+6pWmG8bRaJLzYK P9JUtdM6MHZDUjyrOg0GB1tRz3SD4wf6yRjqOlkdAQOG8IeCPSa8DOK/qvqei0b5Jxsp 6rbTnaKoCIGbOSc90q5WS2yBZU7RjV5PnZ9erLZjusVBTRiqBY4b13DnD1PFtyT5fz8z tYBla50fFVbzlXEozoGTyeLeyCjnaaTpuDM02BsEzsg3Hk+HMs1o6BWf0CAQP1HPyhTZ Ou7g== X-Gm-Message-State: AKGB3mJ0BrWlBdkll2QyFpnYPqmqQ+0kLrTOGqcFlGralKO5UsXTVkuD 8bY9hvUyh4IGigqWTypgkcXWEw== X-Google-Smtp-Source: ACJfBosJcx7eJZ44sg3Slid0dRkGxCyn6eCUvNgr6cPSCK5b72r4L4yNxtoapMDwqzuPcW+vmmc06w== X-Received: by 10.80.204.152 with SMTP id q24mr47566870edi.108.1514596407352; Fri, 29 Dec 2017 17:13:27 -0800 (PST) Received: from localhost.localdomain ([109.255.42.2]) by smtp.gmail.com with ESMTPSA id h4sm29818268edb.16.2017.12.29.17.13.26 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 29 Dec 2017 17:13:26 -0800 (PST) From: Bryan O'Donoghue To: mturquette@baylibre.com, sboyd@codeaurora.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org Cc: pure.logic@nexus-software.ie, Tony Prisk Subject: [PATCH 15/33] clk: vt8500: change vtwm_pll_round_rate() return logic Date: Sat, 30 Dec 2017 01:12:54 +0000 Message-Id: <1514596392-22270-16-git-send-email-pure.logic@nexus-software.ie> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1514596392-22270-1-git-send-email-pure.logic@nexus-software.ie> References: <1514596392-22270-1-git-send-email-pure.logic@nexus-software.ie> Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch updates the round_rate() logic here to return zero instead of a negative number on error. In conjunction with higher-level changes associated with acting on the return value of clk_ops->round_rate() it is then possible to have clk_ops->round_rate() return values from 1 Hz to ULONG_MAX Hz instead of the current limitation of 1 Hz to LONG_MAX Hz. Signed-off-by: Bryan O'Donoghue Cc: Michael Turquette Cc: Stephen Boyd Cc: linux-clk@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Tony Prisk --- drivers/clk/clk-vt8500.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/clk/clk-vt8500.c b/drivers/clk/clk-vt8500.c index 43c88f6..750c087 100644 --- a/drivers/clk/clk-vt8500.c +++ b/drivers/clk/clk-vt8500.c @@ -610,7 +610,7 @@ static unsigned long vtwm_pll_round_rate(struct clk_hw *hw, unsigned long rate, struct clk_pll *pll = to_clk_pll(hw); u32 filter, mul, div1, div2; long round_rate; - int ret; + int ret = 1; switch (pll->type) { case PLL_TYPE_VT8500: @@ -634,11 +634,11 @@ static unsigned long vtwm_pll_round_rate(struct clk_hw *hw, unsigned long rate, round_rate = WM8850_BITS_TO_FREQ(*prate, mul, div1, div2); break; default: - ret = -EINVAL; + break; } if (ret) - return ret; + return 0; return round_rate; }