From patchwork Sat Dec 30 01:12:56 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: 10137569 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 81FE66037D for ; Sat, 30 Dec 2017 01:19:04 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7538A2B551 for ; Sat, 30 Dec 2017 01:19:04 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6A1AC2B585; Sat, 30 Dec 2017 01:19:04 +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 12DB92B551 for ; Sat, 30 Dec 2017 01:19:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751191AbdL3BTC (ORCPT ); Fri, 29 Dec 2017 20:19:02 -0500 Received: from mail-wm0-f66.google.com ([74.125.82.66]:42297 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751100AbdL3BNa (ORCPT ); Fri, 29 Dec 2017 20:13:30 -0500 Received: by mail-wm0-f66.google.com with SMTP id b141so3834000wme.1 for ; Fri, 29 Dec 2017 17:13:29 -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=yN6nQXpVC8oljmY+eyv8m9XVLhoVrEb8PBgmzaW8W4E=; b=BbP8mRImzBkfPMZ75MiJOyAfwwSBca5Ut9lNb2M4SlSX6iejXlIJz8hnJ9Ux8RuXCB LrbN9wElRGh+TnaMc2qUBeSWXNNjBxEqpncZAnBcrwL8+uRoVDOTkDk5GIoABDJJ8UGY mxxNz+HzqPGgxkVLjoit+UzhBh7DrC+OZH2riTMGGQR+ugjYtok9le7B0YovF+UZfM8Q dP6RdD+6W4+fklMRfEkw4hA2d9LxgoGj5MZuOA4aDA9pkMAmSGxfCs0+NB2aQlWZKKe6 Oyi0T1UoLTSnMjFofMiJ7lKbQjt3U38ahTau3GZHFx+nD9IfzFs8kUcB0bVuqG9PM+C4 p2PA== 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=yN6nQXpVC8oljmY+eyv8m9XVLhoVrEb8PBgmzaW8W4E=; b=fAKcZF3Y1nBGk8/GadVzkVZ/rWtmyI800G61jVXB4NZj4uXMIyw0xSX8oP/AoJn3zI ky0CFK9O7KMvHSgD2bmxGtkIM68oankY1CTijtn1u9XsJw5lmChlaJC0aD08FFaSPHlE Bkm11Luqb+Xi1rs0KgGgB/mdoGAlQJCSYFdtzpUeR8hygwMUfBp8orUL15GZzLXlJtU/ bAAMjEOytamM52eBaXM8syfjSMuvV2DBwtShirDczwA3TF2Fuj2IRQ0dKKpoibWo2Xto OGxcb2/IMy8JrPhsAGX4hmqyS5jnmUwslKPl/WlFtNdugld8ZuOn2eNX12m+qX6LrcoI 21IA== X-Gm-Message-State: AKGB3mJAgOoq6nVyVPAEPBvvS/NmNSFyVqsEaTCNlyPke0eQDj4f/T8O sYvDwyQl8PMuAhVOM/qqmh3LVw== X-Google-Smtp-Source: ACJfBovthMWs3qrp5ZDlkHLCJgy7gjsmvIJzV2w2EdNopk0pCctuK/vDn0j5Y74QHTaFhiEq9seYhA== X-Received: by 10.80.158.194 with SMTP id a60mr45737007edf.228.1514596409061; Fri, 29 Dec 2017 17:13:29 -0800 (PST) Received: from localhost.localdomain ([109.255.42.2]) by smtp.gmail.com with ESMTPSA id h4sm29818268edb.16.2017.12.29.17.13.28 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 29 Dec 2017 17:13:28 -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, Russell King Subject: [PATCH 17/33] clk: mvebu: change dove_round_rate() return logic Date: Sat, 30 Dec 2017 01:12:56 +0000 Message-Id: <1514596392-22270-18-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: Russell King --- drivers/clk/mvebu/dove-divider.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clk/mvebu/dove-divider.c b/drivers/clk/mvebu/dove-divider.c index 234ba0a..7704b5e 100644 --- a/drivers/clk/mvebu/dove-divider.c +++ b/drivers/clk/mvebu/dove-divider.c @@ -117,7 +117,7 @@ static unsigned long dove_round_rate(struct clk_hw *hw, unsigned long rate, divider = dove_calc_divider(dc, rate, parent_rate, false); if (divider < 0) - return divider; + return 0; rate = DIV_ROUND_CLOSEST(parent_rate, divider);