From patchwork Mon Jan 1 19:42:50 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: 10139523 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 1A23A601A1 for ; Mon, 1 Jan 2018 19:50:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0A16628617 for ; Mon, 1 Jan 2018 19:50:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EFCC3286C0; Mon, 1 Jan 2018 19:50:37 +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 730DB28617 for ; Mon, 1 Jan 2018 19:50:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754562AbeAATtx (ORCPT ); Mon, 1 Jan 2018 14:49:53 -0500 Received: from mail-wm0-f67.google.com ([74.125.82.67]:44106 "EHLO mail-wm0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753836AbeAATn3 (ORCPT ); Mon, 1 Jan 2018 14:43:29 -0500 Received: by mail-wm0-f67.google.com with SMTP id t8so58262834wmc.3 for ; Mon, 01 Jan 2018 11:43:28 -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=rJSOxvQ+UuDiwk1jYvhD73JGw3GfTH2sBrWtud0TcCc=; b=s6E3BdDQz06UBFlGwc3ENdIqprV/czOtUutKmh8A/NyaEKr07Tl//GdjXJP46idkmt 7q4aQZKoQ3X5CqsVVucG5t23jmJ1YY/R5PNC313HWKqA3NBDMsdhCl1or2y3MmNXaqBZ T+du31kTsc06uZ7eUEwD8F3sFQQnrvJKLf+Fl7Eaeum3yKUtm4Z8rxhMbJkgUBie8fSn CYzmsYFDg0S5MZM7h05imTDuDr5t9Z5oGk4SpqOatdRGe03Gmts90v8XvOIpjXu527wV LUGHbCu0H/Lz+5pGgIafWD1m4aGZ1Rks7bG01dCYbLwt8+HCt1zadBLsQlU+woAHNoEA 4yhQ== 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=rJSOxvQ+UuDiwk1jYvhD73JGw3GfTH2sBrWtud0TcCc=; b=RzpCPbHlECbWayhRdaRD5lrn9uHV11VXfTwExRWPi30ZiVftNajlhz+9Vfm12x/gUX eUx82GXSnJgfho0Mucf/LpxQFaXwUqbuJ2Jy6+LD5NZhQ5/DchRMvofoZavzNhPqgF1g DCnmShvsbINBVIVzLWx/wAh6T22k6KsD76xecaLnrTFIOnKTznq0CovFdkJ56x8skSxE a2nGYylXY9srcZV2hyYnYqaEAlDjXCUFHzD4R8Ng6ae2IHoyXfaxoEv3cPzFrzjRtgv0 SkRlalqcRuxtf7dLxmgYo9j3XFFV9FO44Of8H4u0zsMt7YerEoSGN//Bc0UUdhlZ19pC LzGQ== X-Gm-Message-State: AKGB3mJShqkQlkAsJy6T0LHjM6lAV/n9t68p/o8UGfTQJIf9sduTXjv8 PxCzkyI2kR7VMrHg/KXLvpO9Ur6U X-Google-Smtp-Source: ACJfBovx5anHTkLU3oiz/4TnRhWp3zm+0XUY7QNxqPwSJsyEYBZL1EYU/QBxDi4lRbdnfFbx6NORqg== X-Received: by 10.80.180.187 with SMTP id w56mr59913984edd.3.1514835807880; Mon, 01 Jan 2018 11:43:27 -0800 (PST) Received: from localhost.localdomain (D4CCACC7.cm-2.dynamic.ziggo.nl. [212.204.172.199]) by smtp.gmail.com with ESMTPSA id w2sm39361075edb.4.2018.01.01.11.43.27 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 01 Jan 2018 11:43:27 -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 , Ray Jui , Scott Branden , Jon Mason , bcm-kernel-feedback-list@broadcom.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 11/34] clk: bcm: iproc: change iproc_pll_round_rate() return logic Date: Mon, 1 Jan 2018 19:42:50 +0000 Message-Id: <1514835793-1104-12-git-send-email-pure.logic@nexus-software.ie> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1514835793-1104-1-git-send-email-pure.logic@nexus-software.ie> References: <1514835793-1104-1-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: Ray Jui Cc: Scott Branden Cc: Jon Mason Cc: bcm-kernel-feedback-list@broadcom.com Cc: linux-clk@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/clk/bcm/clk-iproc-pll.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/clk/bcm/clk-iproc-pll.c b/drivers/clk/bcm/clk-iproc-pll.c index b5399b2..54e914c 100644 --- a/drivers/clk/bcm/clk-iproc-pll.c +++ b/drivers/clk/bcm/clk-iproc-pll.c @@ -439,7 +439,7 @@ static unsigned long iproc_pll_round_rate(struct clk_hw *hw, unsigned long rate, struct iproc_pll *pll = clk->pll; if (rate == 0 || *parent_rate == 0 || !pll->vco_param) - return -EINVAL; + return 0; for (i = 0; i < pll->num_vco_entries; i++) { if (rate <= pll->vco_param[i].rate) @@ -541,7 +541,7 @@ static unsigned long iproc_clk_round_rate(struct clk_hw *hw, unsigned long rate, unsigned int div; if (rate == 0 || *parent_rate == 0) - return -EINVAL; + return 0; if (rate == *parent_rate) return *parent_rate;