On giovedì 16 giugno 2022 15:12:43 CEST David Sterba wrote: > On Thu, Jun 16, 2022 at 04:58:08PM +0800, kernel test robot wrote: > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > > head: c6d7e3b385f19869ab96e9404c92ff1abc34f2c8 > > commit: 20adc3e8f39ad4ce68795b6d3f9847f45ccd931a [3345/4062] highmem: Make kunmap_{local,atomic}() take pointers to const void > > config: parisc-randconfig-r012-20220616 (https://download.01.org/0day-ci/archive/20220616/202206161652.aEEuklTk-lkp@xxxxxxxxx/config) > > compiler: hppa-linux-gcc (GCC) 11.3.0 > > 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 > > # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=20adc3e8f39ad4ce68795b6d3f9847f45ccd931a > > 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 20adc3e8f39ad4ce68795b6d3f9847f45ccd931a > > # save the config file > > mkdir build_dir && cp config build_dir/.config > > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=parisc SHELL=/bin/bash drivers/iio/light/ drivers/net/ wwan/t7xx/ > > > > If you fix the issue, kindly add following tag where applicable > > Reported-by: kernel test robot <lkp@xxxxxxxxx> > > > > All error/warnings (new ones prefixed by >>): > > > > In file included from include/linux/highmem.h:13, > > from include/linux/bvec.h:10, > > from include/linux/blk_types.h:10, > > from include/linux/writeback.h:13, > > from include/linux/memcontrol.h:22, > > from include/linux/swap.h:9, > > from include/linux/suspend.h:5, > > from include/linux/regulator/consumer.h:35, > > from include/linux/i2c.h:19, > > from drivers/iio/light/adjd_s311.c:15: > > include/linux/highmem-internal.h: In function '__kunmap_local': > > >> include/linux/highmem-internal.h:203:31: warning: passing argument 1 of 'kunmap_flush_on_unmap' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] > > 203 | kunmap_flush_on_unmap(addr); > > I think you missed adding const to kunmap_flush_on_unmap, in some > configs it could be hidden behind an ifdef. The warning is on > ARCH=parisc, > > https://elixir.bootlin.com/linux/latest/source/arch/parisc/include/asm/ cacheflush.h#L78 > > #define ARCH_HAS_FLUSH_ON_KUNMAP > static inline void kunmap_flush_on_unmap(void *addr) > { > flush_kernel_dcache_page_addr(addr); > } > > I think that you are looking at an old report. Hours ago I sent a new version of this patch[1] and also a new version of the patch for the conversions of zstd.c to kmap_local_page() (without those casts which are no any longer necessary). Sorry for not replying to this report. Thanks, Fabio [1] https://lore.kernel.org/lkml/20220616081133.14144-2-fmdefrancesco@xxxxxxxxx/ [2] https://lore.kernel.org/lkml/20220616081133.14144-3-fmdefrancesco@xxxxxxxxx/
