On 04/12/2023 18:37, kernel test robot wrote:

Hi James,

kernel test robot noticed the following build warnings:

[auto build test WARNING on atorgue-stm32/stm32-next] [also build test WARNING on linus/master v6.7-rc4 next-20231204] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/James-Clark/coresight-Make-cu... base: https://git.kernel.org/pub/scm/linux/kernel/git/atorgue/stm32.git stm32-next patch link: https://lore.kernel.org/r/20231115162834.355598-1-james.clark%40arm.com patch subject: [PATCH v2] coresight: Make current W=1 warnings default config: arm-randconfig-r131-20231117 (https://download.01.org/0day-ci/archive/20231205/202312050158.FKpxuafP-lkp@i...) compiler: arm-linux-gnueabi-gcc (GCC) 13.2.0 reproduce: (https://download.01.org/0day-ci/archive/20231205/202312050158.FKpxuafP-lkp@i...)

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@intel.com | Closes: https://lore.kernel.org/oe-kbuild-all/202312050158.FKpxuafP-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)

...

...

drivers/hwtracing/coresight/coresight-etb10.c:840:17: sparse: sparse: Using plain integer as NULL pointer

drivers/hwtracing/coresight/coresight-etb10.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/xarray.h, ...): include/linux/page-flags.h:242:46: sparse: sparse: self-comparison always evaluates to false --

...

...

drivers/hwtracing/coresight/coresight-funnel.c:395:17: sparse: sparse: Using plain integer as NULL pointer

drivers/hwtracing/coresight/coresight-funnel.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/slab.h, ...): include/linux/page-flags.h:242:46: sparse: sparse: self-comparison always evaluates to false --

...

...

drivers/hwtracing/coresight/coresight-tpdm.c:242:17: sparse: sparse: Using plain integer as NULL pointer

drivers/hwtracing/coresight/coresight-tpdm.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/xarray.h, ...): include/linux/page-flags.h:242:46: sparse: sparse: self-comparison always evaluates to false

vim +840 drivers/hwtracing/coresight/coresight-etb10.c

834 835 static const struct amba_id etb_ids[] = { 836 { 837 .id = 0x000bb907, 838 .mask = 0x000fffff, 839 },

...

840 { 0, 0, 0 },

841 }; 842

This should already be fixed in V3 here:

https://lore.kernel.org/linux-arm-kernel/20231123120459.287578-1-james.clark...