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a="203780732" X-IronPort-AV: E=Sophos;i="5.83,241,1616482800"; d="scan'208";a="203780732" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Jun 2021 02:43:56 -0700 IronPort-SDR: ahrV80wV3JIVDV6C7MMJ8QF4KbLE3B01TgQ5aWe0bFAfQ+IgPJDFRUSHqml+6wEH7Tfi6wPKRl VdECDRDXkyyw== X-IronPort-AV: E=Sophos;i="5.83,241,1616482800"; d="scan'208";a="479641147" Received: from shao2-debian.sh.intel.com (HELO localhost) ([10.239.13.11]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Jun 2021 02:43:55 -0700 Date: Wed, 2 Jun 2021 17:43:41 +0800 From: kernel test robot To: Mike Rapoport Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Andrew Morton , Linux Memory Management List Subject: arch/h8300/kernel/setup.c:72:26: warning: Unused variable: region [unusedVariable] Message-ID: <20210602094340.GI1271937@shao2-debian> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) X-Rspamd-Queue-Id: 11E7E200109C Authentication-Results: imf11.hostedemail.com; dkim=none; spf=none (imf11.hostedemail.com: domain of rong.a.chen@intel.com has no SPF policy when checking 134.134.136.65) smtp.mailfrom=rong.a.chen@intel.com; dmarc=fail reason="No valid SPF, No valid DKIM" header.from=intel.com (policy=none) X-Rspamd-Server: rspam03 X-Stat-Signature: pqhgk1dackocu19wunide4koibpwhiek X-HE-Tag: 1622627022-902930 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/torvalds/linux.git master head: c2131f7e73c9e9365613e323d65c7b9e5b910f56 commit: 80c4574417ae42fe2ba6978772854dc67cfc5331 h8300, nds32, openrisc: simplify detection of memory extents date: 8 months ago compiler: h8300-linux-gcc (GCC) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot cppcheck possible warnings: (new ones prefixed by >>, may not real problems) >> arch/h8300/kernel/setup.c:72:26: warning: Unused variable: region [unusedVariable] struct memblock_region *region; ^ vim +72 arch/h8300/kernel/setup.c d8b0bdb444ed0e Yoshinori Sato 2015-05-11 69 d8b0bdb444ed0e Yoshinori Sato 2015-05-11 70 static void __init bootmem_init(void) d8b0bdb444ed0e Yoshinori Sato 2015-05-11 71 { d8b0bdb444ed0e Yoshinori Sato 2015-05-11 @72 struct memblock_region *region; d8b0bdb444ed0e Yoshinori Sato 2015-05-11 73 d8b0bdb444ed0e Yoshinori Sato 2015-05-11 74 memory_end = memory_start = 0; d8b0bdb444ed0e Yoshinori Sato 2015-05-11 75 d8b0bdb444ed0e Yoshinori Sato 2015-05-11 76 /* Find main memory where is the kernel */ 80c4574417ae42 Mike Rapoport 2020-10-13 77 memory_start = memblock_start_of_DRAM(); 80c4574417ae42 Mike Rapoport 2020-10-13 78 memory_end = memblock_end_of_DRAM(); d8b0bdb444ed0e Yoshinori Sato 2015-05-11 79 d8b0bdb444ed0e Yoshinori Sato 2015-05-11 80 if (!memory_end) d8b0bdb444ed0e Yoshinori Sato 2015-05-11 81 panic("No memory!"); d8b0bdb444ed0e Yoshinori Sato 2015-05-11 82 c489dfefe739d3 Rob Herring 2018-03-16 83 /* setup bootmem globals (we use no_bootmem, but mm still depends on this) */ c489dfefe739d3 Rob Herring 2018-03-16 84 min_low_pfn = PFN_UP(memory_start); 80c4574417ae42 Mike Rapoport 2020-10-13 85 max_low_pfn = PFN_DOWN(memory_end); c489dfefe739d3 Rob Herring 2018-03-16 86 max_pfn = max_low_pfn; d8b0bdb444ed0e Yoshinori Sato 2015-05-11 87 c489dfefe739d3 Rob Herring 2018-03-16 88 memblock_reserve(__pa(_stext), _end - _stext); d8b0bdb444ed0e Yoshinori Sato 2015-05-11 89 c489dfefe739d3 Rob Herring 2018-03-16 90 early_init_fdt_reserve_self(); c489dfefe739d3 Rob Herring 2018-03-16 91 early_init_fdt_scan_reserved_mem(); d8b0bdb444ed0e Yoshinori Sato 2015-05-11 92 c489dfefe739d3 Rob Herring 2018-03-16 93 memblock_dump_all(); d8b0bdb444ed0e Yoshinori Sato 2015-05-11 94 } d8b0bdb444ed0e Yoshinori Sato 2015-05-11 95 :::::: The code at line 72 was first introduced by commit :::::: d8b0bdb444ed0e2bd5f9d3ea7412cb90bdec58cf h8300: kernel startup :::::: TO: Yoshinori Sato :::::: CC: Yoshinori Sato --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org