From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 74EA222126C for ; Sun, 4 Oct 2026 12:33:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.21 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791117225; cv=none; b=SVa/WcuSZdnKhUgfGTH/n4Bz+yfvWFwIRth4A9dIZaO9Jhy7EuvCUZ8oNHyzNmyv4da7e10/ju14EwUatdmg5wZsij16lOcpDRuPxMI3oLhs4ts7qjiMQmt9uPdffnSvok7RF4/9pNGGLB4VpOW0qYHK9nsaDVT9tHXxksy/ekg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791117225; c=relaxed/simple; bh=s3YxXS+2yb3yIVQdqR9UufwN5fbh3NH8+SJQatGEj7c=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type; b=ZvlPCp6mn6VbC8oI3e/5KFUqgVwLayLCZTED+gF+Qk0pDUpijRjUv8rozjfzAoOpbCd8whGWgxAmClZpJRadZWTi8zosU6ZmkuzZjnmc7fihhthwuZ3D9k885w1x3UZocHBDWtFmVSbeDbF1XiqYMdIcTFSC+9oEe6BUheKbn3g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=lXZwkzHO; arc=none smtp.client-ip=198.175.65.21 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="lXZwkzHO" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1791117223; x=1822653223; h=date:from:to:cc:subject:message-id:mime-version; bh=s3YxXS+2yb3yIVQdqR9UufwN5fbh3NH8+SJQatGEj7c=; b=lXZwkzHOXHj/PvAl9IVm5vwyJtFnHtTEjtMiO70iTDBqiEkNfKHFJvMy D+Gw0v+OEN8M10Um9OwTD7ildvyG1L6f0VPsyoPIARXIclSaXWhk9+nU/ D/8c2UjAum+qjJgywZ0TTr/swHSpCWnxYPDxfG/L7LwjsqOFyGy3oviSy 7qnIGlhngq8iRW4JpBgi3lVrJpFdvkJuUcl4RRK+zLGmHYRqF4SlGGMAo /nA4wYoCrv7n/VVjwvPBks9J2uoWSllJrvIG0Oh1UgK2fBACdNNM1yNRQ JqkVkC+xVN3vP1MZne53rtO6bnCDXkEJg+j248gsZiFmISTFoWRCzVtCO A==; X-CSE-ConnectionGUID: fMDX/TpNS3GJImCMHlZq/Q== X-CSE-MsgGUID: OXYn8gprR7q606rjlP64ng== X-IronPort-AV: E=McAfee;i="6800,10657,11924"; a="90665284" X-IronPort-AV: E=Sophos;i="6.27,139,1787036400"; d="scan'208";a="90665284" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Oct 2026 05:33:43 -0700 X-CSE-ConnectionGUID: kidfGGn/RUmVINPG12Z2IQ== X-CSE-MsgGUID: YAiqQh+VTW+8N5751PRwdA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,139,1787036400"; d="scan'208";a="275779200" Received: from igk-lkp-server01.igk.intel.com (HELO 3a02ec7efc9f) ([10.211.93.152]) by fmviesa010.fm.intel.com with ESMTP; 04 Oct 2026 05:33:41 -0700 Received: from kbuild by 3a02ec7efc9f with local (Exim 4.98.2) (envelope-from ) id 1xDLPO-000000000Hz-3EnI; Sun, 04 Oct 2026 12:33:38 +0000 Date: Sun, 04 Oct 2026 14:33:32 +0200 From: kernel test robot To: "Thomas =?utf-8?Q?Wei=C3=9Fschuh"?= Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Shuah Khan , Johannes Berg , David Gow Subject: drivers/clk/bcm/clk-bcm2835.c:952:1-7: WARNING: do_div() does a 64-by-32 division, please consider using div64_ul instead. Message-ID: <202610041410.n4VXsQjz-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Hi Thomas, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 6addb4f385570ebc11c4eb499a4f1c149f313e84 commit: 031cdd3bc3f369553933c1b0f4cb18000162c8ff kunit: Enable PCI on UML without triggering WARN() date: 1 year, 1 month ago config: um-randconfig-r2104-20261004 (https://download.01.org/0day-ci/archive/20261004/202610041410.n4VXsQjz-lkp@intel.com/config) compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project d7e4505dd447d115d85fdea45cd71030ac1d86ee) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Fixes: 031cdd3bc3f3 ("kunit: Enable PCI on UML without triggering WARN()") | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202610041410.n4VXsQjz-lkp@intel.com/ cocci warnings: (new ones prefixed by >>) >> drivers/clk/bcm/clk-bcm2835.c:952:1-7: WARNING: do_div() does a 64-by-32 division, please consider using div64_ul instead. drivers/clk/bcm/clk-bcm2835.c:554:1-7: WARNING: do_div() does a 64-by-32 division, please consider using div64_ul instead. -- >> drivers/phy/rockchip/phy-rockchip-inno-dsidphy.c:327:2-8: WARNING: do_div() does a 64-by-32 division, please consider using div64_ul instead. -- >> drivers/watchdog/rti_wdt.c:187:1-7: WARNING: do_div() does a 64-by-32 division, please consider using div64_ul instead. drivers/watchdog/rti_wdt.c:279:2-8: WARNING: do_div() does a 64-by-32 division, please consider using div64_ul instead. -- >> drivers/gpu/drm/tegra/output.c:167:8-28: WARNING: Threaded IRQ with no primary handler requested without IRQF_ONESHOT (unless it is nested IRQ) -- >> drivers/gpu/drm/kmb/kmb_drv.c:520:2-8: ERROR: missing put_device; call of_find_device_by_node on line 507, but without a corresponding object release within this function. drivers/gpu/drm/kmb/kmb_drv.c:523:2-8: ERROR: missing put_device; call of_find_device_by_node on line 507, but without a corresponding object release within this function. drivers/gpu/drm/kmb/kmb_drv.c:530:2-8: ERROR: missing put_device; call of_find_device_by_node on line 507, but without a corresponding object release within this function. drivers/gpu/drm/kmb/kmb_drv.c:580:1-7: ERROR: missing put_device; call of_find_device_by_node on line 507, but without a corresponding object release within this function. -- >> drivers/gpu/drm/panthor/panthor_heap.c:404:28-33: ERROR: invalid reference to the index variable of the iterator on line 392 vim +952 drivers/clk/bcm/clk-bcm2835.c 41691b8862e2a3 Eric Anholt 2015-10-08 940 41691b8862e2a3 Eric Anholt 2015-10-08 941 static u32 bcm2835_clock_choose_div(struct clk_hw *hw, 41691b8862e2a3 Eric Anholt 2015-10-08 942 unsigned long rate, 8ca011ef4af48a Maxime Ripard 2021-09-22 943 unsigned long parent_rate) 41691b8862e2a3 Eric Anholt 2015-10-08 944 { 41691b8862e2a3 Eric Anholt 2015-10-08 945 struct bcm2835_clock *clock = bcm2835_clock_from_hw(hw); 41691b8862e2a3 Eric Anholt 2015-10-08 946 const struct bcm2835_clock_data *data = clock->data; 9c95b32ca09364 Remi Pommarel 2015-12-06 947 u32 unused_frac_mask = 9c95b32ca09364 Remi Pommarel 2015-12-06 948 GENMASK(CM_DIV_FRAC_BITS - data->frac_bits, 0) >> 1; 41691b8862e2a3 Eric Anholt 2015-10-08 949 u64 temp = (u64)parent_rate << CM_DIV_FRAC_BITS; 959ca92a3235fc Martin Sperl 2016-02-29 950 u32 div, mindiv, maxdiv; 41691b8862e2a3 Eric Anholt 2015-10-08 951 88110a9f6209be Stefan Wahren 2022-04-28 @952 do_div(temp, rate); 41691b8862e2a3 Eric Anholt 2015-10-08 953 div = temp; 41691b8862e2a3 Eric Anholt 2015-10-08 954 div &= ~unused_frac_mask; 41691b8862e2a3 Eric Anholt 2015-10-08 955 959ca92a3235fc Martin Sperl 2016-02-29 956 /* different clamping limits apply for a mash clock */ 959ca92a3235fc Martin Sperl 2016-02-29 957 if (data->is_mash_clock) { 959ca92a3235fc Martin Sperl 2016-02-29 958 /* clamp to min divider of 2 */ 959ca92a3235fc Martin Sperl 2016-02-29 959 mindiv = 2 << CM_DIV_FRAC_BITS; 959ca92a3235fc Martin Sperl 2016-02-29 960 /* clamp to the highest possible integer divider */ 959ca92a3235fc Martin Sperl 2016-02-29 961 maxdiv = (BIT(data->int_bits) - 1) << CM_DIV_FRAC_BITS; 959ca92a3235fc Martin Sperl 2016-02-29 962 } else { 997f16bd5d2e9b Martin Sperl 2016-02-29 963 /* clamp to min divider of 1 */ 959ca92a3235fc Martin Sperl 2016-02-29 964 mindiv = 1 << CM_DIV_FRAC_BITS; 997f16bd5d2e9b Martin Sperl 2016-02-29 965 /* clamp to the highest possible fractional divider */ 959ca92a3235fc Martin Sperl 2016-02-29 966 maxdiv = GENMASK(data->int_bits + CM_DIV_FRAC_BITS - 1, 959ca92a3235fc Martin Sperl 2016-02-29 967 CM_DIV_FRAC_BITS - data->frac_bits); 959ca92a3235fc Martin Sperl 2016-02-29 968 } 959ca92a3235fc Martin Sperl 2016-02-29 969 959ca92a3235fc Martin Sperl 2016-02-29 970 /* apply the clamping limits */ 959ca92a3235fc Martin Sperl 2016-02-29 971 div = max_t(u32, div, mindiv); 959ca92a3235fc Martin Sperl 2016-02-29 972 div = min_t(u32, div, maxdiv); 41691b8862e2a3 Eric Anholt 2015-10-08 973 41691b8862e2a3 Eric Anholt 2015-10-08 974 return div; 41691b8862e2a3 Eric Anholt 2015-10-08 975 } 41691b8862e2a3 Eric Anholt 2015-10-08 976 :::::: The code at line 952 was first introduced by commit :::::: 88110a9f6209be1ed7312bae029d000bc7c7e88f clk: bcm2835: fix bcm2835_clock_choose_div :::::: TO: Stefan Wahren :::::: CC: Stephen Boyd -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki