From patchwork Mon Jan 20 14:32:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thierry Reding X-Patchwork-Id: 1226002 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pwm-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=ccacutXT; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 481Yz151cXz9sRK for ; Tue, 21 Jan 2020 01:32:13 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726885AbgATOcN (ORCPT ); Mon, 20 Jan 2020 09:32:13 -0500 Received: from mail-wm1-f67.google.com ([209.85.128.67]:53079 "EHLO mail-wm1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726642AbgATOcM (ORCPT ); Mon, 20 Jan 2020 09:32:12 -0500 Received: by mail-wm1-f67.google.com with SMTP id p9so14729805wmc.2 for ; Mon, 20 Jan 2020 06:32:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=JBfE0rmIu/FSUJN4p4CePAsqkWjdbYzEzxaRDLfRmmE=; b=ccacutXTN3UM1ZElXF22VF1gII/g384omL6Xj5L7Qdqx8ADH/Jrh8Xk+b2bkAaYBZ8 Nss5GZ/2dUNcccqaxuin5/1l0PS3tL1QDxXcm6izcY8UCSaRRtATi5NXX32K0HH/rRC7 15Q9UWX5eqAQI6NNnYRpq/sm/MdhlwXQkY6rhG32ii4kWKzd4X7AFlAGe1cSkyioQ5s+ +LQpteLd5oR9vZr5Vn0p8Cizs0k95eZUrGbDwrsCOhz8tgzwjVdIzSI4dCjq6QFODEnJ d7gpB0h9lNyYnrMTHXojgefBAoHoMJGEVnIHuZDOpNFczrOwvd6X5YMmMo/GxNV4adQQ HOGg== 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:mime-version :content-transfer-encoding; bh=JBfE0rmIu/FSUJN4p4CePAsqkWjdbYzEzxaRDLfRmmE=; b=lvGevA5iun8WTtMTJLH7AIKxAwIJziMqWX06q6VB1HsewkaTFaORzBzbmJHJ3ULKv2 9sJOKmr5NzeIoh4rb9FQOmlP8jx0Fv7khga5uP/+AVlpQTAqUXcK8dmV0XWjv8rY2wjn lqP//nFp88WyDF3MTWGDbjSOjVmOPZs1CSkmznWSdrFLZpriRHCoLvLMVsU3esLBgg/M 1/sDWcDEyM/FMDLDRnCE/o7+JI+cOanRokDAXUAHsFRN7G21jWFFJ2LOad0S/HKlQwX8 8nw3bwbsc5YwUu3aFteIGLxzGUMy8KEHz6A6Pqmkm+ebqUInQzbI22/eW3S+D1tFMktg ArGQ== X-Gm-Message-State: APjAAAX5GTSqPvUGPv8xUFcgTKZse0ZfItM1JHgtg51WxoiEXaY+S8m+ BwB27uGA9Wfxt+Dasxh16OI= X-Google-Smtp-Source: APXvYqyn7HKOlw7Kw1sNJKhXeN7RvYG2rSk5+OaTpWv3AhzsvQx/3L2FofSJqCc+XJ0rng0nczP7Fg== X-Received: by 2002:a1c:22c6:: with SMTP id i189mr19192303wmi.15.1579530731099; Mon, 20 Jan 2020 06:32:11 -0800 (PST) Received: from localhost (p2E5BEF3F.dip0.t-ipconnect.de. [46.91.239.63]) by smtp.gmail.com with ESMTPSA id q15sm47843518wrr.11.2020.01.20.06.32.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Jan 2020 06:32:10 -0800 (PST) From: Thierry Reding To: Thierry Reding Cc: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Maxime Ripard , Jernej Skrabec , =?utf-8?b?Q2zDqW1lbnQgUMOpcm9u?= , linux-pwm@vger.kernel.org Subject: [PATCH] pwm: sun4i: Initialize variables before use Date: Mon, 20 Jan 2020 15:32:06 +0100 Message-Id: <20200120143206.710666-1-thierry.reding@gmail.com> X-Mailer: git-send-email 2.24.1 MIME-Version: 1.0 Sender: linux-pwm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pwm@vger.kernel.org GCC can't always determine that the duty, period and prescaler values are initialized when returning from sun4i_pwm_calculate(), so help out a little by initializing them to 0. Signed-off-by: Thierry Reding Reported-by: kbuild test robot --- drivers/pwm/pwm-sun4i.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/pwm/pwm-sun4i.c b/drivers/pwm/pwm-sun4i.c index 0decc7cde133..3e3efa6c768f 100644 --- a/drivers/pwm/pwm-sun4i.c +++ b/drivers/pwm/pwm-sun4i.c @@ -234,9 +234,9 @@ static int sun4i_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, { struct sun4i_pwm_chip *sun4i_pwm = to_sun4i_pwm_chip(chip); struct pwm_state cstate; - u32 ctrl, duty, period, val; + u32 ctrl, duty = 0, period = 0, val; int ret; - unsigned int delay_us, prescaler; + unsigned int delay_us, prescaler = 0; unsigned long now; bool bypass;