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Message-ID: <202504270919.3FGvikEj-lkp@intel.com> Date: Sun, 27 Apr 2025 09:54:58 +0800 From: kernel test robot <lkp@...el.com> To: David Lechner <dlechner@...libre.com>, Jonathan Cameron <jic23@...nel.org>, Nuno Sá <nuno.sa@...log.com>, Andy Shevchenko <andy@...nel.org>, Lars-Peter Clausen <lars@...afoo.de>, Michael Hennerich <Michael.Hennerich@...log.com>, Eugen Hristev <eugen.hristev@...aro.org>, Nicolas Ferre <nicolas.ferre@...rochip.com>, Alexandre Belloni <alexandre.belloni@...tlin.com>, Claudiu Beznea <claudiu.beznea@...on.dev> Cc: oe-kbuild-all@...ts.linux.dev, linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org Subject: Re: [PATCH v3 1/6] iio: introduce IIO_DECLARE_BUFFER_WITH_TS macros Hi David, kernel test robot noticed the following build warnings: [auto build test WARNING on aff301f37e220970c2f301b5c65a8bfedf52058e] url: https://github.com/intel-lab-lkp/linux/commits/David-Lechner/iio-introduce-IIO_DECLARE_BUFFER_WITH_TS-macros/20250426-051240 base: aff301f37e220970c2f301b5c65a8bfedf52058e patch link: https://lore.kernel.org/r/20250425-iio-introduce-iio_declare_buffer_with_ts-v3-1-f12df1bff248%40baylibre.com patch subject: [PATCH v3 1/6] iio: introduce IIO_DECLARE_BUFFER_WITH_TS macros config: i386-randconfig-r133-20250427 (https://download.01.org/0day-ci/archive/20250427/202504270919.3FGvikEj-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250427/202504270919.3FGvikEj-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 <lkp@...el.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202504270919.3FGvikEj-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) drivers/iio/accel/adxl313_core.c: note: in included file (through drivers/iio/accel/adxl313.h): >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/adxl345_core.c: note: in included file: >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/adxl355_core.c: note: in included file (through include/linux/iio/buffer.h): >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/adxl313_spi.c: note: in included file (through drivers/iio/accel/adxl313.h): >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/adis16201.c: note: in included file: >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/adis16209.c: note: in included file: >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/dmard09.c: note: in included file: >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/da311.c: note: in included file: >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/adxl313_i2c.c: note: in included file (through drivers/iio/accel/adxl313.h): >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/adxl367_spi.c: note: in included file: >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/da280.c: note: in included file: >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/kxsd9.c: note: in included file: >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/bma220_spi.c: note: in included file (through include/linux/iio/buffer.h): >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/kionix-kx022a.c: note: in included file: >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/adxl372.c: note: in included file: >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/kxcjk-1013.c: note: in included file: >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/fxls8962af-core.c: note: in included file (through include/linux/iio/buffer.h): >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/adxl380.c: note: in included file (through include/linux/iio/buffer.h): >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/adxl367.c: note: in included file (through include/linux/iio/buffer.h): >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/mma7455_core.c: note: in included file: >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/mc3230.c: note: in included file: >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/ssp_accel_sensor.c: note: in included file (through include/linux/iio/common/ssp_sensors.h): >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/mma7660.c: note: in included file: >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/sca3300.c: note: in included file (through include/linux/iio/buffer.h): >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/mma9551.c: note: in included file: >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/mma9551_core.c: note: in included file: >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/mxc4005.c: note: in included file: >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/stk8312.c: note: in included file (through include/linux/iio/buffer.h): >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/stk8ba50.c: note: in included file (through include/linux/iio/buffer.h): >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/sca3000.c: note: in included file: >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/msa311.c: note: in included file (through include/linux/iio/buffer.h): >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" -- drivers/iio/accel/mma9553.c: note: in included file: >> include/linux/iio/iio.h:815:1: sparse: sparse: static assertion failed: "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment" vim +815 include/linux/iio/iio.h 782 783 #define __IIO_DECLARE_BUFFER_WITH_TS(type, name, count) \ 784 static_assert(count); \ 785 type name[ALIGN((count), sizeof(s64) / sizeof(type)) + sizeof(s64) / sizeof(type)] 786 787 /** 788 * IIO_DECLARE_BUFFER_WITH_TS() - Declare a buffer with timestamp 789 * @type: element type of the buffer 790 * @name: identifier name of the buffer 791 * @count: number of elements in the buffer 792 * 793 * Declares a buffer that is safe to use with iio_push_to_buffer_with_ts(). In 794 * addition to allocating enough space for @count elements of @type, it also 795 * allocates space for a s64 timestamp at the end of the buffer and ensures 796 * proper alignment of the timestamp. 797 */ 798 #define IIO_DECLARE_BUFFER_WITH_TS(type, name, count) \ 799 __IIO_DECLARE_BUFFER_WITH_TS(type, name, count) __aligned(sizeof(s64)) 800 801 /** 802 * IIO_DECLARE_DMA_BUFFER_WITH_TS() - Declare a DMA-aligned buffer with timestamp 803 * @type: element type of the buffer 804 * @name: identifier name of the buffer 805 * @count: number of elements in the buffer 806 * 807 * Same as IIO_DECLARE_BUFFER_WITH_TS(), but is uses __aligned(IIO_DMA_MINALIGN) 808 * to ensure that the buffer doesn't share cachelines with anything that comes 809 * before it in a struct. This should not be used for stack-allocated buffers 810 * as stack memory cannot generally be used for DMA. 811 */ 812 #define IIO_DECLARE_DMA_BUFFER_WITH_TS(type, name, count) \ 813 __IIO_DECLARE_BUFFER_WITH_TS(type, name, count) __aligned(IIO_DMA_MINALIGN) 814 > 815 static_assert(IIO_DMA_MINALIGN % sizeof(s64) == 0, 816 "macros above assume that IIO_DMA_MINALIGN also ensures s64 timestamp alignment"); 817 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
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