From patchwork Fri Dec 27 09:13:51 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 3410781 Return-Path: X-Original-To: patchwork-ltsi-dev@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 69604C02DC for ; Fri, 27 Dec 2013 09:24:57 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 445FA2013A for ; Fri, 27 Dec 2013 09:24:56 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) by mail.kernel.org (Postfix) with ESMTP id 1729A2010F for ; Fri, 27 Dec 2013 09:24:55 +0000 (UTC) Received: from mail.linux-foundation.org (localhost [IPv6:::1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 8C04FC0F; Fri, 27 Dec 2013 09:21:03 +0000 (UTC) X-Original-To: ltsi-dev@lists.linuxfoundation.org Delivered-To: ltsi-dev@mail.linuxfoundation.org Received: from smtp2.linuxfoundation.org (smtp2.linux-foundation.org [172.17.192.36]) by mail.linuxfoundation.org (Postfix) with ESMTP id 762A9B30 for ; Fri, 27 Dec 2013 09:20:58 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from kirsty.vergenet.net (kirsty.vergenet.net [202.4.237.240]) by smtp2.linuxfoundation.org (Postfix) with ESMTP id 0D4631DBA0 for ; Fri, 27 Dec 2013 09:20:58 +0000 (UTC) Received: from ayumi.isobedori.kobe.vergenet.net (p2020-ipbfp1604kobeminato.hyogo.ocn.ne.jp [114.154.85.20]) by kirsty.vergenet.net (Postfix) with ESMTP id 8D2D22671DD; Fri, 27 Dec 2013 20:15:48 +1100 (EST) Received: by ayumi.isobedori.kobe.vergenet.net (Postfix, from userid 7100) id 2CD49EDE02B; Fri, 27 Dec 2013 18:15:47 +0900 (JST) From: Simon Horman To: ltsi-dev@lists.linuxfoundation.org Date: Fri, 27 Dec 2013 18:13:51 +0900 Message-Id: <1388135720-12832-198-git-send-email-horms+renesas@verge.net.au> X-Mailer: git-send-email 1.8.4 In-Reply-To: <1388135720-12832-1-git-send-email-horms+renesas@verge.net.au> References: <1388135720-12832-1-git-send-email-horms+renesas@verge.net.au> X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org Cc: Magnus Damm Subject: [LTSI-dev] [PATCH ltsi-3.10 197/286] ARM: shmobile: mackerel: clk_round_rate() can return a zero to indicate an error X-BeenThere: ltsi-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: "A list to discuss patches, development, and other things related to the LTSI project" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: ltsi-dev-bounces@lists.linuxfoundation.org Errors-To: ltsi-dev-bounces@lists.linuxfoundation.org X-Virus-Scanned: ClamAV using ClamSMTP From: Paul Walmsley Treat both negative and zero return values from clk_round_rate() as errors. This is needed since subsequent patches will convert clk_round_rate()'s return value to be an unsigned type, rather than a signed type, since some clock sources can generate rates higher than (2^31)-1 Hz. Eventually, when calling clk_round_rate(), only a return value of zero will be considered a error. All other values will be considered valid rates. The comparison against values less than 0 is kept to preserve the correct behavior in the meantime. Signed-off-by: Paul Walmsley Acked-by: Laurent Pinchart Signed-off-by: Simon Horman (cherry picked from commit 90d423faa0ed53cfda9f12d119f6938dd1ab515d) (Queued by Simon Horman for v3.14 but not yet in Linus's tree) Signed-off-by: Simon Horman --- arch/arm/mach-shmobile/board-mackerel.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-shmobile/board-mackerel.c b/arch/arm/mach-shmobile/board-mackerel.c index af06753..d90d2f1 100644 --- a/arch/arm/mach-shmobile/board-mackerel.c +++ b/arch/arm/mach-shmobile/board-mackerel.c @@ -548,9 +548,9 @@ static void __init hdmi_init_pm_clock(void) clk_get_rate(&sh7372_pllc2_clk)); rate = clk_round_rate(&sh7372_pllc2_clk, 594000000); - if (rate < 0) { + if (rate <= 0) { pr_err("Cannot get suitable rate: %ld\n", rate); - ret = rate; + ret = -EINVAL; goto out; }