From patchwork Mon Jan 1 19:34:52 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bryan O'Donoghue X-Patchwork-Id: 854351 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="BxYhQAvo"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3z9SCF5lFDz9sRW for ; Tue, 2 Jan 2018 06:37:45 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753336AbeAATgj (ORCPT ); Mon, 1 Jan 2018 14:36:39 -0500 Received: from mail-wm0-f68.google.com ([74.125.82.68]:34337 "EHLO mail-wm0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753153AbeAATfO (ORCPT ); Mon, 1 Jan 2018 14:35:14 -0500 Received: by mail-wm0-f68.google.com with SMTP id y82so13959506wmg.1 for ; Mon, 01 Jan 2018 11:35:14 -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=BxYhQAvoTQvIUkVx528xiAeE8iE8PgCsWq6wJ4/j3jQb5X3WNiDXNxY8LgUtoB4Jxp PYjeCfuTCuMHKgR6IPTVcLYpR8KuO32JLkq5EQqhZyfCSyhDV1BFfzeu81u5f6m4nyAO cnPemBu/5vFRTxLmPBeFJPo9vRRleyKPWt68wKwaVA3ZaBha6YkNhz5krbWwRdQAX80Q M61RH6vND1RaN8BbyoTKHnLZCjpgrmoTxA/3qrFUmGUt4i77rLG3NnSU6YRIKIYaFo6L q7HMKJ3mtMZY2F2O9f8Xawi6mWJb/ADLP2O8SRhqKyiiQxcBrBMOHb5wLCXzUPOfeIDR bDuw== 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=ade90XRkRjfj4UMTNOQn0sC0KSLHOB+4yxWDXWqi25bfgi0/wsnv3DZlRaGCmpn6nH JKmW1OTWvBoYEUNvcRoNFMbLsULVDj3VlLnyp25CVdG+VhLO5kRzeaqauHuZ5SapVKtj tTfu6243NLTn91rf+sr2wjCf6uiu53p0+WRe96Tz74PPYZdqGQuY2IJ94EqMlDZkT1ju vIjRjBmp+b19IEBbdRVR8KkxQp0+iBkuSyC9xmUjWcgB2jY5QA+/wa3mc76PZM8xrMf0 uh75w1VqS4GtxCCzgYycs9QphqWlBvjEROmXHiPYLvTRWo6SS754/RhuOr5XjpraKXIW V+aw== X-Gm-Message-State: AKGB3mIRsglRMOp2dL5+/GnGexMc0IU7rkNSikMPYDmwanC7uQlmvWDo xJjnFCMs8Sqraxw9ieLiI9ZcdQ== X-Google-Smtp-Source: ACJfBosyENvdSWjHlP9bqlR0+6qkCXlitfuffTSrkz+PHtW47+lHSsxkafn46fmw4raRdpXBhQlgkA== X-Received: by 10.80.179.39 with SMTP id q36mr58064550edd.85.1514835313549; Mon, 01 Jan 2018 11:35:13 -0800 (PST) Received: from localhost.localdomain (D4CCACC7.cm-2.dynamic.ziggo.nl. [212.204.172.199]) by smtp.gmail.com with ESMTPSA id r8sm29086992edm.22.2018.01.01.11.35.12 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 01 Jan 2018 11:35:13 -0800 (PST) From: Bryan O'Donoghue To: mturquette@baylibre.com, sboyd@codeaurora.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org Cc: Bryan O'Donoghue , Peter De Schrijver , Prashant Gaikwad , Thierry Reding , Jonathan Hunter , linux-tegra@vger.kernel.org, Rhyland Klein , Bill Huang Subject: [PATCH v2 26/34] clk: tegra: pll: change clk_pll_round_rate() return logic Date: Mon, 1 Jan 2018 19:34:52 +0000 Message-Id: <1514835300-381-12-git-send-email-pure.logic@nexus-software.ie> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1514835300-381-1-git-send-email-pure.logic@nexus-software.ie> References: <1514835300-381-1-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; }