tree: https://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git master head: a8cb1e92d29096b1fe58ef6fdcee699196eac1bd commit: b660d0a2acb9053d627befbb259a397d26aa9582 [14/18] New implementation for IO memcpy and IO memset config: x86_64-rhel-8.3 (https://download.01.org/0day-ci/archive/20241029/202410290907.0mDZVYPK-lkp@xxxxxxxxx/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/20241029/202410290907.0mDZVYPK-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202410290907.0mDZVYPK-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> lib/iomem_copy.c:14: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * memset_io Set a range of I/O memory to a constant value lib/iomem_copy.c:55: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * memcpy_fromio Copy a block of data from I/O memory lib/iomem_copy.c:97: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * memcpy_toio Copy a block of data into I/O memory vim +14 lib/iomem_copy.c 11 12 #ifndef memset_io 13 /** > 14 * memset_io Set a range of I/O memory to a constant value 15 * @addr: The beginning of the I/O-memory range to set 16 * @val: The value to set the memory to 17 * @count: The number of bytes to set 18 * 19 * Set a range of I/O memory to a given value. 20 */ 21 void memset_io(volatile void __iomem *addr, int val, size_t count) 22 { 23 long qc = (u8)val; 24 25 qc *= ~0UL / 0xff; 26 27 while (count && !IS_ALIGNED((long)addr, sizeof(long))) { 28 __raw_writeb(val, addr); 29 addr++; 30 count--; 31 } 32 33 while (count >= sizeof(long)) { 34 #ifdef CONFIG_64BIT 35 __raw_writeq(qc, addr); 36 #else 37 __raw_writel(qc, addr); 38 #endif 39 40 addr += sizeof(long); 41 count -= sizeof(long); 42 } 43 44 while (count) { 45 __raw_writeb(val, addr); 46 addr++; 47 count--; 48 } 49 } 50 EXPORT_SYMBOL(memset_io); 51 #endif 52 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
