From patchwork Tue Apr 10 12:51:40 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 10333049 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 DAF2F6053C for ; Tue, 10 Apr 2018 12:53:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CB32B28A4E for ; Tue, 10 Apr 2018 12:53:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BEAAE28CEF; Tue, 10 Apr 2018 12:53:23 +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=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 50A8828A4E for ; Tue, 10 Apr 2018 12:53:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=OywBU0ki20/C3SCPq6q7lmy4AmUiwPpmbl+jxbIqK4c=; b=sBn6s7aaL5x68zVMcYVxkokLMT jGaV1VGojyf7+EzNNeMTHAxL9sN1AOU3p2uAIB2XwwkuIBNtahva80fdseukHyXuCEE/3rx90myBN xJH7nSZKv1I5BG6K2IXnZ7BuNgiKB2ktS/eV9HQucRPoVaHLj8HjwEy6QmXKn1c11R5HKkuRSV4oP Yc7/ky4C4liF3ajgUt6cyhNiouEKRDg/eyAlv3ev+ikPC3dlWBQoGht07rvDzWMBH2utj6RtF8wJ9 w8XVV0I4iFVJ2coPX5R+LSndxWnRZQ8h0CoRn4lY0Bzw/vmmAuX/3h9Z6rrhLbwkP1AtJRELq5cV6 KN0gonIA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1f5slz-0003qz-Ol; Tue, 10 Apr 2018 12:53:19 +0000 Received: from laurent.telenet-ops.be ([2a02:1800:110:4::f00:19]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1f5skv-00032P-L3 for linux-rockchip@lists.infradead.org; Tue, 10 Apr 2018 12:52:15 +0000 Received: from ayla.of.borg ([84.194.111.163]) by laurent.telenet-ops.be with bizsmtp id Ycrj1x00i3XaVaC01crjpj; Tue, 10 Apr 2018 14:51:54 +0200 Received: from ramsan.of.borg ([192.168.97.29] helo=ramsan) by ayla.of.borg with esmtp (Exim 4.86_2) (envelope-from ) id 1f5skR-00054a-Qf; Tue, 10 Apr 2018 14:51:43 +0200 Received: from geert by ramsan with local (Exim 4.86_2) (envelope-from ) id 1f5skR-00041F-Oh; Tue, 10 Apr 2018 14:51:43 +0200 From: Geert Uytterhoeven To: Michael Turquette , Stephen Boyd Subject: [PATCH v2 4/5] soc/tegra: pmc: Use of_clk_get_parent_count() instead of open coding Date: Tue, 10 Apr 2018 14:51:40 +0200 Message-Id: <1523364701-15383-5-git-send-email-geert+renesas@glider.be> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1523364701-15383-1-git-send-email-geert+renesas@glider.be> References: <1523364701-15383-1-git-send-email-geert+renesas@glider.be> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180410_055213_872418_17A6FB53 X-CRM114-Status: GOOD ( 12.67 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Heiko Stuebner , Geert Uytterhoeven , linux-rockchip@lists.infradead.org, Maxime Ripard , Linus Walleij , Daniel Lezcano , linux-kernel@vger.kernel.org, Jonathan Hunter , linux-gpio@vger.kernel.org, Chen-Yu Tsai , Rob Herring , Thierry Reding , linux-tegra@vger.kernel.org, Thomas Gleixner , Frank Rowand , linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP As of_clk_get_parent_count() returns zero on failure, while of_count_phandle_with_args() might return a negative error code, this also fixes the issue of possibly using a very big number in the allocation below. Signed-off-by: Geert Uytterhoeven Acked-by: Jon Hunter --- This depends on "[PATCH v2 1/5] clk: Extract OF clock helpers in ". v2: - of_clk_get_parent_count() was moved to . --- drivers/soc/tegra/pmc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c index d9fcdb592b3966a5..d8cb48a4b8eb1b78 100644 --- a/drivers/soc/tegra/pmc.c +++ b/drivers/soc/tegra/pmc.c @@ -31,6 +31,7 @@ #include #include #include +#include #include #include #include @@ -725,7 +726,7 @@ static int tegra_powergate_of_get_clks(struct tegra_powergate *pg, unsigned int i, count; int err; - count = of_count_phandle_with_args(np, "clocks", "#clock-cells"); + count = of_clk_get_parent_count(np); if (count == 0) return -ENODEV;