From patchwork Sat Dec 30 01:13:04 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: 854032 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-tegra-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=nexus-software-ie.20150623.gappssmtp.com header.i=@nexus-software-ie.20150623.gappssmtp.com header.b="LQMkMaxG"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3z7lsN4jf1z9sNx for ; Sat, 30 Dec 2017 12:16:24 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751293AbdL3BQB (ORCPT ); Fri, 29 Dec 2017 20:16:01 -0500 Received: from mail-wm0-f68.google.com ([74.125.82.68]:34527 "EHLO mail-wm0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751210AbdL3BNi (ORCPT ); Fri, 29 Dec 2017 20:13:38 -0500 Received: by mail-wm0-f68.google.com with SMTP id y82so6993705wmg.1 for ; Fri, 29 Dec 2017 17:13:37 -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=jqeeRfo208W2LgN9LmG5DnTQsSw/rRZvCY1oiIToMJ4=; b=LQMkMaxGiVNWT0Qgm5rXavZq0hm4fJiF2HfZWU4gMCGxASjGn5IuDX77hTWksUVyhi yCkIoFvjMToKrrjQn8mfpvvE4NVAhP4UySovQdw/BRL1JQSsS0wtFMMC1J+EjS9MNmig BKngb28kCrerlqpxJUvChYpOYE7vc3oestTq5U98T8jwhnZ7TpN9R/mXDGWI9yBLBWtK oOL0AIT0UII6mne+s4NK4J10H22j64l5+ydUFMKUFqVYtIvdxuJLBlS52jxmX5DhmKBv oIi9Z9PWzz5P0niB8Sk6kgvRuKWh7OWzQExLvaKBPRKFMwTelUosTKJMYAllEelUbIiH fjlA== 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=jqeeRfo208W2LgN9LmG5DnTQsSw/rRZvCY1oiIToMJ4=; b=GS/GacFJoRy44wXnpLyrEg8oiWyJbSHUHCmydG+kCS74+HktxJxROgGK25p+kKscFc cHn90tmoxLNRT5S29BJq7zHVuzTAZqT+1ZdJQABzAZ0wZoLSR/hPp/zji/j8gC6Rw+KQ gNn9Y2Lu3Pb+9mpHPEQGlC8FRdRX0r4RBorZzP1pIh0w+KK6OG64z0xJcXOx0COzTPT/ p6NWJz19MqIQaOIAP2HpHUd050UmcGi5LjvrUyXdBDV0P3yA4WMpZspP7p+wQjXv2HF+ J+VpjO56/2xfZKEiozR3d8BITN0ctPZFKuegh7tRTPvKa8pxlf3c0swHV+LdzPHYgrz9 1UIA== X-Gm-Message-State: AKGB3mL9EXXF1K0+5T7zMKGKEB0yEIYCbxBXiJG7AceWYrfy+ssdk6UL 6cpkpZ5HzV46GxZW/F8dSmQeHA== X-Google-Smtp-Source: ACJfBos8lvG7CQCkoBYyHdT/13XEut1qnkq6GHjcOE2jQ6UZYjbO4JtLagtf7Yj5X/pUjWAeYxa+pg== X-Received: by 10.80.205.218 with SMTP id h26mr46470441edj.157.1514596416911; Fri, 29 Dec 2017 17:13:36 -0800 (PST) Received: from localhost.localdomain ([109.255.42.2]) by smtp.gmail.com with ESMTPSA id h4sm29818268edb.16.2017.12.29.17.13.35 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 29 Dec 2017 17:13:36 -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, Peter De Schrijver , Prashant Gaikwad , Thierry Reding , Jonathan Hunter , linux-tegra@vger.kernel.org, Rhyland Klein , Bill Huang Subject: [PATCH 25/33] clk: tegra: pll: change clk_pll_round_rate() return logic Date: Sat, 30 Dec 2017 01:13:04 +0000 Message-Id: <1514596392-22270-26-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-tegra-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org 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: Peter De Schrijver Cc: Prashant Gaikwad Cc: Michael Turquette Cc: Stephen Boyd Cc: Thierry Reding Cc: Jonathan Hunter Cc: linux-clk@vger.kernel.org Cc: linux-tegra@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Rhyland Klein Cc: Bill Huang --- drivers/clk/tegra/clk-pll.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clk/tegra/clk-pll.c b/drivers/clk/tegra/clk-pll.c index b4a7d30..0a3edb0 100644 --- a/drivers/clk/tegra/clk-pll.c +++ b/drivers/clk/tegra/clk-pll.c @@ -839,7 +839,7 @@ static unsigned long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate, if (_get_table_rate(hw, &cfg, rate, *prate) && pll->params->calc_rate(hw, &cfg, rate, *prate)) - return -EINVAL; + return 0; return cfg.output_rate; }