From mboxrd@z Thu Jan 1 00:00:00 1970 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5800AC433EF for ; Sun, 22 May 2022 03:52:08 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id D82448D000B; Sat, 21 May 2022 23:52:07 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D33828D0003; Sat, 21 May 2022 23:52:07 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C21548D000B; Sat, 21 May 2022 23:52:07 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id B44AB8D0003 for ; Sat, 21 May 2022 23:52:07 -0400 (EDT) Received: from smtpin27.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay02.hostedemail.com (Postfix) with ESMTP id 8662733074 for ; Sun, 22 May 2022 03:52:07 +0000 (UTC) X-FDA: 79492005894.27.46DE686 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by imf31.hostedemail.com (Postfix) with ESMTP id EA87F20024 for ; Sun, 22 May 2022 03:51:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1653191525; x=1684727525; h=date:from:to:cc:subject:message-id:mime-version; bh=Ncg3fenhMzANpwBzc+ZzrWqpjCh41aOSHl7zLZUGcQw=; b=WKoBQvjscO1jwkKiYW/vvmd2OIJpM6VPdjNEpi1hXtHUCecluBLFbwBx W3azlG7Jr2v28lUTnpr3jmJd3dZCDy+3wFMTyJiIvEfFbX+ptBswIDlRc 3I5SoGKIByaJCoUUKvhTID/lK0ocCk4lPRpi7v7HOW0kbKHbYzw6jAu6/ RUj6illVs7BSqBYFFlQ4EjRPp8EcdZsWL7fBVguA/gAS0bZwzrS/JKgTJ 9KOc9SBSco+4U6fjWlyW5MVf1/JnavDW07LPqTy1hqD3l8XcGHj8CM+Uf nLyK66Jc+lcvAEwd9D8hWhPctIlA93ejmLcGrThMcgKFxvn+aJDjm+zrB A==; X-IronPort-AV: E=McAfee;i="6400,9594,10354"; a="272650312" X-IronPort-AV: E=Sophos;i="5.91,243,1647327600"; d="scan'208";a="272650312" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 May 2022 20:52:01 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,243,1647327600"; d="scan'208";a="525307183" Received: from lkp-server02.sh.intel.com (HELO 242b25809ac7) ([10.239.97.151]) by orsmga003.jf.intel.com with ESMTP; 21 May 2022 20:52:00 -0700 Received: from kbuild by 242b25809ac7 with local (Exim 4.95) (envelope-from ) id 1nscdL-0006ts-AZ; Sun, 22 May 2022 03:51:59 +0000 Date: Sun, 22 May 2022 11:51:48 +0800 From: kernel test robot To: Miquel Raynal Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, Linux Memory Management List , Alexandre Belloni Subject: [linux-next:master 12283/13468] drivers/rtc/rtc-rzn1.c:291:3: warning: variable 'val' is uninitialized when used here Message-ID: <202205221120.Tt6UxePI-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Rspam-User: X-Rspamd-Queue-Id: EA87F20024 X-Stat-Signature: 9kwamdpzryr9mg5ar7ttfixrc8bd7nb8 Authentication-Results: imf31.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=WKoBQvjs; spf=none (imf31.hostedemail.com: domain of lkp@intel.com has no SPF policy when checking 134.134.136.24) smtp.mailfrom=lkp@intel.com; dmarc=pass (policy=none) header.from=intel.com X-Rspamd-Server: rspam03 X-HE-Tag: 1653191492-6558 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 18ecd30af1a8402c162cca1bd58771c0e5be7815 commit: be4a11cf98aff5d456eae947a49b6163393d9420 [12283/13468] rtc: rzn1: Add oscillator offset support config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20220522/202205221120.Tt6UxePI-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 1443dbaba6f0e57be066995db9164f89fb57b413) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=be4a11cf98aff5d456eae947a49b6163393d9420 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout be4a11cf98aff5d456eae947a49b6163393d9420 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/rtc/ net/sched/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> drivers/rtc/rtc-rzn1.c:291:3: warning: variable 'val' is uninitialized when used here [-Wuninitialized] val |= RZN1_RTC_SUBU_DEV; ^~~ drivers/rtc/rtc-rzn1.c:275:9: note: initialize the variable 'val' to silence this warning u32 val; ^ = 0 1 warning generated. vim +/val +291 drivers/rtc/rtc-rzn1.c 269 270 static int rzn1_rtc_set_offset(struct device *dev, long offset) 271 { 272 struct rzn1_rtc *rtc = dev_get_drvdata(dev); 273 unsigned int steps; 274 int stepsh, stepsl; 275 u32 val; 276 int ret; 277 278 /* 279 * Check which resolution mode (every 20 or 60s) can be used. 280 * Between 2 and 124 clock pulses can be added or substracted. 281 * 282 * In 20s mode, the minimum resolution is 2 / (32768 * 20) which is 283 * close to 3051 ppb. In 60s mode, the resolution is closer to 1017. 284 */ 285 stepsh = DIV_ROUND_CLOSEST(offset, 1017); 286 stepsl = DIV_ROUND_CLOSEST(offset, 3051); 287 288 if (stepsh >= -0x3E && stepsh <= 0x3E) { 289 /* 1017 ppb per step */ 290 steps = stepsh; > 291 val |= RZN1_RTC_SUBU_DEV; 292 } else if (stepsl >= -0x3E && stepsl <= 0x3E) { 293 /* 3051 ppb per step */ 294 steps = stepsl; 295 } else { 296 return -ERANGE; 297 } 298 299 if (!steps) 300 return 0; 301 302 if (steps > 0) { 303 val |= steps + 1; 304 } else { 305 val |= RZN1_RTC_SUBU_DECR; 306 val |= (~(-steps - 1)) & 0x3F; 307 } 308 309 ret = readl_poll_timeout(rtc->base + RZN1_RTC_CTL2, val, 310 !(val & RZN1_RTC_CTL2_WUST), 100, 2000000); 311 if (ret) 312 return ret; 313 314 writel(val, rtc->base + RZN1_RTC_SUBU); 315 316 return 0; 317 } 318 -- 0-DAY CI Kernel Test Service https://01.org/lkp