From patchwork Sat Dec 30 01:13:09 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: 10137473 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 AEFDF6037D for ; Sat, 30 Dec 2017 01:14:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A2A452D245 for ; Sat, 30 Dec 2017 01:14:49 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 962A42D252; Sat, 30 Dec 2017 01:14:49 +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 149522D23A for ; Sat, 30 Dec 2017 01:14:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751068AbdL3BOs (ORCPT ); Fri, 29 Dec 2017 20:14:48 -0500 Received: from mail-wm0-f68.google.com ([74.125.82.68]:42329 "EHLO mail-wm0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751268AbdL3BNm (ORCPT ); Fri, 29 Dec 2017 20:13:42 -0500 Received: by mail-wm0-f68.google.com with SMTP id b141so3834393wme.1 for ; Fri, 29 Dec 2017 17:13:42 -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=6KrQPgFFBVOXoJzBBxWNl78TsnjomoBEJqiwfzhghKY=; b=bnEdZJUcCFAAFbSvoyVDb2WDQ53VrL9VjEHAJ46cKwZnwEdH6S4T2EugNhUwTHOozf R0o8k7G0NHv5itxT30AN3ygM2BXcE8mjwP5sAAJaDJKBAW/V/XuAPEgVt+cIKVTlKyQz //Wu7JV617dm/ja7Hy2OQuWaP8oiVoXdTuKn0Dxmiw6cqnQgVFbN8cf3xX6biVY3jpE2 ctZiIiQjdAosHOVj7wfKWjhGpjmnHgLocRIK7qdr+r+4rxz1sjE2biQ2ZHBReOQ/7Q8F 3BSKNWo1CZWeXlE3HXnZJIfF/G/iLY6jmnIJcqbuIJy9Nnb5bUPOt2CJB/92kKxt/Jmw oLtw== 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=6KrQPgFFBVOXoJzBBxWNl78TsnjomoBEJqiwfzhghKY=; b=HK68NuhqEyBdO1ZqTiT1kPvrZ4yGzeHEknKPr+OW+5o0PKj3/RqqN9H5AbxWKZdr4j cm6YTp7TxXEPhvIYU+zOUop6i7DLzO1MGC+JCH5uY4z/E/doE4Djwpyy3h/O3Mso3cZV dZAYl7tAJ2v3/5FKo2QIJGpPhbxLT6PWb9Ay4mHCMsiGTIO5zfHf9sF5Qdu0A2Mxu0vB qzZilgkZxtsDC/VPlqFfeSjEIxV4zSr4EtYsPtXF4qLxHNbS6FWMmb6DsAbIC5wGKbMF fdq8+T5Vt2Xtjw1R8UsQU4tASEvun8toPqprHmWK7ERlDYpRGC1H1xutt8tEq9s3DA19 iP0g== X-Gm-Message-State: AKGB3mKoT112ntLsdqO/WCFBLOizBc4TFRvCREHHzaTmvGkWNyiHfwnO qTg99hEqjKTJ8rz0NbUvP586Eg== X-Google-Smtp-Source: ACJfBosmhEqs14dm1MCLpabfzq4PNiXU7Wc2yVVP07/WHs/p1X8LL+LmHZuBBqoL9UCMkthDcq1u8A== X-Received: by 10.80.147.14 with SMTP id m14mr46966408eda.121.1514596421591; Fri, 29 Dec 2017 17:13:41 -0800 (PST) Received: from localhost.localdomain ([109.255.42.2]) by smtp.gmail.com with ESMTPSA id h4sm29818268edb.16.2017.12.29.17.13.40 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 29 Dec 2017 17:13:41 -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, Boris Brezillon , Quentin Schulz Subject: [PATCH 30/33] clk: at91: change round_rate() return logic Date: Sat, 30 Dec 2017 01:13:09 +0000 Message-Id: <1514596392-22270-31-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: Boris Brezillon Cc: Michael Turquette Cc: Stephen Boyd Cc: Quentin Schulz Cc: linux-clk@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- drivers/clk/at91/clk-audio-pll.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/clk/at91/clk-audio-pll.c b/drivers/clk/at91/clk-audio-pll.c index 56227cb..48231e3 100644 --- a/drivers/clk/at91/clk-audio-pll.c +++ b/drivers/clk/at91/clk-audio-pll.c @@ -278,7 +278,7 @@ static unsigned long clk_audio_pll_pad_round_rate(struct clk_hw *hw, unsigned long *parent_rate) { struct clk_hw *pclk = clk_hw_get_parent(hw); - long best_rate = -EINVAL; + unsigned long best_rate = 0; unsigned long best_parent_rate; unsigned long tmp_qd; u32 div; @@ -330,7 +330,7 @@ static unsigned long clk_audio_pll_pmc_round_rate(struct clk_hw *hw, unsigned long *parent_rate) { struct clk_hw *pclk = clk_hw_get_parent(hw); - long best_rate = -EINVAL; + unsigned long best_rate = 0; unsigned long best_parent_rate = 0; u32 tmp_qd = 0, div; long tmp_rate;