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X-CSE-ConnectionGUID: VBzGLQAETDS/Q9+HlvFXEQ== X-CSE-MsgGUID: +oSlkJEgQx29DHQi/wyMSw== X-IronPort-AV: E=McAfee;i="6700,10204,11412"; a="50863731" X-IronPort-AV: E=Sophos;i="6.15,233,1739865600"; d="scan'208";a="50863731" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Apr 2025 10:25:33 -0700 X-CSE-ConnectionGUID: bMooqzDqQdeZnoEE66eaag== X-CSE-MsgGUID: CoVTSh/MTHqyaZCTwy5v8Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.15,233,1739865600"; d="scan'208";a="132908758" Received: from lkp-server01.sh.intel.com (HELO 050dd05385d1) ([10.239.97.150]) by orviesa007.jf.intel.com with ESMTP; 23 Apr 2025 10:25:30 -0700 Received: from kbuild by 050dd05385d1 with local (Exim 4.96) (envelope-from ) id 1u7dqh-0003Up-2m; Wed, 23 Apr 2025 17:25:27 +0000 Date: Thu, 24 Apr 2025 01:25:08 +0800 From: kernel test robot To: David Lechner , Jonathan Cameron , Nuno =?iso-8859-1?Q?S=E1?= , Andy Shevchenko , Lars-Peter Clausen , Michael Hennerich , Eugen Hristev , Nicolas Ferre , Alexandre Belloni , Claudiu Beznea Cc: oe-kbuild-all@lists.linux.dev, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v2 1/6] iio: introduce IIO_DECLARE_BUFFER_WITH_TS macros Message-ID: <202504240112.hZy9LpvD-lkp@intel.com> References: <20250422-iio-introduce-iio_declare_buffer_with_ts-v2-1-3fd36475c706@baylibre.com> Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250422-iio-introduce-iio_declare_buffer_with_ts-v2-1-3fd36475c706@baylibre.com> Hi David, kernel test robot noticed the following build errors: [auto build test ERROR on aff301f37e220970c2f301b5c65a8bfedf52058e] url: https://github.com/intel-lab-lkp/linux/commits/David-Lechner/iio-introduce-IIO_DECLARE_BUFFER_WITH_TS-macros/20250423-061049 base: aff301f37e220970c2f301b5c65a8bfedf52058e patch link: https://lore.kernel.org/r/20250422-iio-introduce-iio_declare_buffer_with_ts-v2-1-3fd36475c706%40baylibre.com patch subject: [PATCH v2 1/6] iio: introduce IIO_DECLARE_BUFFER_WITH_TS macros config: sh-randconfig-001-20250424 (https://download.01.org/0day-ci/archive/20250424/202504240112.hZy9LpvD-lkp@intel.com/config) compiler: sh4-linux-gcc (GCC) 12.4.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250424/202504240112.hZy9LpvD-lkp@intel.com/reproduce) 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 | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202504240112.hZy9LpvD-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from drivers/iio/industrialio-buffer.c:29: >> include/linux/iio/iio.h:813:1: error: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" 813 | _Static_assert(sizeof(IIO_DMA_MINALIGN) % sizeof(s64) == 0, | ^~~~~~~~~~~~~~ vim +813 include/linux/iio/iio.h 781 782 #define _IIO_DECLARE_BUFFER_WITH_TS(type, name, count) \ 783 type name[ALIGN((count), sizeof(s64) / sizeof(type)) + sizeof(s64) / sizeof(type)] 784 785 /** 786 * IIO_DECLARE_BUFFER_WITH_TS() - Declare a buffer with timestamp 787 * @type: element type of the buffer 788 * @name: identifier name of the buffer 789 * @count: number of elements in the buffer 790 * 791 * Declares a buffer that is safe to use with iio_push_to_buffer_with_ts(). In 792 * addition to allocating enough space for @count elements of @type, it also 793 * allocates space for a s64 timestamp at the end of the buffer and ensures 794 * proper alignment of the timestamp. 795 */ 796 #define IIO_DECLARE_BUFFER_WITH_TS(type, name, count) \ 797 _IIO_DECLARE_BUFFER_WITH_TS(type, name, count) __aligned(sizeof(s64)) 798 799 /** 800 * IIO_DECLARE_DMA_BUFFER_WITH_TS() - Declare a DMA-aligned buffer with timestamp 801 * @type: element type of the buffer 802 * @name: identifier name of the buffer 803 * @count: number of elements in the buffer 804 * 805 * Same as IIO_DECLARE_BUFFER_WITH_TS(), but is uses __aligned(IIO_DMA_MINALIGN) 806 * to ensure that the buffer doesn't share cachelines with anything that comes 807 * before it in a struct. This should not be used for stack-allocated buffers 808 * as stack memory cannot generally be used for DMA. 809 */ 810 #define IIO_DECLARE_DMA_BUFFER_WITH_TS(type, name, count) \ 811 _IIO_DECLARE_BUFFER_WITH_TS(type, name, count) __aligned(IIO_DMA_MINALIGN) 812 > 813 _Static_assert(sizeof(IIO_DMA_MINALIGN) % sizeof(s64) == 0, 814 "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment"); 815 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki