tree: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git vhost head: 4c05433bc6fb4ae172270f0279be8ba89a3da64f commit: b025584098e621d88894d28e80af686958e273af [32/52] virtio_input: convert to LE accessors config: parisc-randconfig-r003-20200805 (attached as .config) compiler: hppa-linux-gcc (GCC) 9.3.0 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 git checkout b025584098e621d88894d28e80af686958e273af # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=parisc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): In file included from include/linux/irqflags.h:15, from include/asm-generic/cmpxchg-local.h:6, from arch/parisc/include/asm/cmpxchg.h:89, from arch/parisc/include/asm/atomic.h:10, from include/linux/atomic.h:7, from arch/parisc/include/asm/bitops.h:13, from include/linux/bitops.h:29, from include/linux/kernel.h:12, from include/linux/list.h:9, from include/linux/module.h:12, from drivers/virtio/virtio_input.c:2: drivers/virtio/virtio_input.c: In function 'virtinput_probe': >> include/linux/typecheck.h:12:18: warning: comparison of distinct pointer types lacks a cast 12 | (void)(&__dummy == &__dummy2); \ | ^~ include/linux/virtio_config.h:405:3: note: in expansion of macro 'typecheck' 405 | typecheck(typeof(virtio_le_to_cpu(virtio_cread_v)), *(ptr)); \ | ^~~~~~~~~ drivers/virtio/virtio_input.c:247:3: note: in expansion of macro 'virtio_cread_le' 247 | virtio_cread_le(vi->vdev, struct virtio_input_config, | ^~~~~~~~~~~~~~~ >> include/linux/typecheck.h:12:18: warning: comparison of distinct pointer types lacks a cast 12 | (void)(&__dummy == &__dummy2); \ | ^~ include/linux/virtio_config.h:405:3: note: in expansion of macro 'typecheck' 405 | typecheck(typeof(virtio_le_to_cpu(virtio_cread_v)), *(ptr)); \ | ^~~~~~~~~ drivers/virtio/virtio_input.c:249:3: note: in expansion of macro 'virtio_cread_le' 249 | virtio_cread_le(vi->vdev, struct virtio_input_config, | ^~~~~~~~~~~~~~~ >> include/linux/typecheck.h:12:18: warning: comparison of distinct pointer types lacks a cast 12 | (void)(&__dummy == &__dummy2); \ | ^~ include/linux/virtio_config.h:405:3: note: in expansion of macro 'typecheck' 405 | typecheck(typeof(virtio_le_to_cpu(virtio_cread_v)), *(ptr)); \ | ^~~~~~~~~ drivers/virtio/virtio_input.c:251:3: note: in expansion of macro 'virtio_cread_le' 251 | virtio_cread_le(vi->vdev, struct virtio_input_config, | ^~~~~~~~~~~~~~~ >> include/linux/typecheck.h:12:18: warning: comparison of distinct pointer types lacks a cast 12 | (void)(&__dummy == &__dummy2); \ | ^~ include/linux/virtio_config.h:405:3: note: in expansion of macro 'typecheck' 405 | typecheck(typeof(virtio_le_to_cpu(virtio_cread_v)), *(ptr)); \ | ^~~~~~~~~ drivers/virtio/virtio_input.c:253:3: note: in expansion of macro 'virtio_cread_le' 253 | virtio_cread_le(vi->vdev, struct virtio_input_config, | ^~~~~~~~~~~~~~~ vim +12 include/linux/typecheck.h e0deaff470900a4 Andrew Morton 2008-07-25 4 e0deaff470900a4 Andrew Morton 2008-07-25 5 /* e0deaff470900a4 Andrew Morton 2008-07-25 6 * Check at compile time that something is of a particular type. e0deaff470900a4 Andrew Morton 2008-07-25 7 * Always evaluates to 1 so you may use it easily in comparisons. e0deaff470900a4 Andrew Morton 2008-07-25 8 */ e0deaff470900a4 Andrew Morton 2008-07-25 9 #define typecheck(type,x) \ e0deaff470900a4 Andrew Morton 2008-07-25 10 ({ type __dummy; \ e0deaff470900a4 Andrew Morton 2008-07-25 11 typeof(x) __dummy2; \ e0deaff470900a4 Andrew Morton 2008-07-25 @12 (void)(&__dummy == &__dummy2); \ e0deaff470900a4 Andrew Morton 2008-07-25 13 1; \ e0deaff470900a4 Andrew Morton 2008-07-25 14 }) e0deaff470900a4 Andrew Morton 2008-07-25 15 :::::: The code at line 12 was first introduced by commit :::::: e0deaff470900a4c3222ca7139f6c9639e26a2f5 split the typecheck macros out of include/linux/kernel.h :::::: TO: Andrew Morton :::::: CC: Linus Torvalds --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org