From patchwork Thu Dec 8 14:20:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 632079 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 76849C63708 for ; Thu, 8 Dec 2022 14:21:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229755AbiLHOV4 (ORCPT ); Thu, 8 Dec 2022 09:21:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48892 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229996AbiLHOVD (ORCPT ); Thu, 8 Dec 2022 09:21:03 -0500 Received: from relay6-d.mail.gandi.net (relay6-d.mail.gandi.net [IPv6:2001:4b98:dc4:8::226]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D6609865A1; Thu, 8 Dec 2022 06:20:49 -0800 (PST) Received: (Authenticated sender: paul.kocialkowski@bootlin.com) by mail.gandi.net (Postfix) with ESMTPSA id 47A4BC000D; Thu, 8 Dec 2022 14:20:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1670509248; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=MxNU8R0hlLPBF9tSthFNrX9x65pnLvPWMOB/8u2G9pw=; b=i5y8KAuAxBn0vHH8ZCOIGjzQYRalTXiPXwlbTriiSCczChCkKhSPkdoSe6cktlwxZvIAYH Jby1hCvQgI4n/8WHkfAGe38jHTpNxytOtArOavYCjxXtmcj+CK2ouJ1sZYgGF8JOB5bxAk IPsbmMCynNJT01h4LMQHIyU+8XpS5Q3wvA7QzJzXSPc+ADcQ0oAidqfCTmJRXeBobHWhN+ 6WXu9dMbwBXG87S11+SCp+06LuL1z1urnHnM/B5fuXvVbtXl6B98YSUx0WVfQy9RvDSE1a /BExhhH/giPAIlfRs7uGTPIisO/ixin+tihlrNtEffcgf5UR+kHIyD/Uh/uwow== From: Paul Kocialkowski To: linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, linux-staging@lists.linux.dev Cc: Yong Deng , Paul Kocialkowski , Mauro Carvalho Chehab , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Thomas Petazzoni , Hans Verkuil , Sakari Ailus , Conor Dooley , Nathan Chancellor Subject: [PATCH v3 10/12] media: sun6i-isp: capture: Fix uninitialized variable use Date: Thu, 8 Dec 2022 15:20:04 +0100 Message-Id: <20221208142006.425809-11-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221208142006.425809-1-paul.kocialkowski@bootlin.com> References: <20221208142006.425809-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org While the stride_chroma variable was previously initialized to zero, it's actually stride_chroma_div4 that is set to hardware registers. Initialize it to zero instead to avoid an uninitialized variable use and get rid of the associated smatch warning. Signed-off-by: Paul Kocialkowski Fixes: e3185e1d7c14 ("media: staging: media: Add support for the Allwinner A31 ISP") --- drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c index 4b592820845a..1595a9607775 100644 --- a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c +++ b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c @@ -108,8 +108,8 @@ sun6i_isp_capture_buffer_configure(struct sun6i_isp_device *isp_dev, void sun6i_isp_capture_configure(struct sun6i_isp_device *isp_dev) { unsigned int width, height; - unsigned int stride_luma, stride_chroma = 0; - unsigned int stride_luma_div4, stride_chroma_div4; + unsigned int stride_luma, stride_chroma; + unsigned int stride_luma_div4, stride_chroma_div4 = 0; const struct sun6i_isp_capture_format *format; const struct v4l2_format_info *info; u32 pixelformat;