On Mon, Feb 18, 2019 at 7:20 PM kbuild test robot <lkp@xxxxxxxxx> wrote: > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git master > head: 3c4fcc2648569c3fe573849f9254c8c3499ec648 > commit: 6ce9e34a28174293927e0b51acc4d30a130a565a [4/6] iomap: add missing const to ioread*/iowrite addr arg > config: mips-allyesconfig (attached as .config) > compiler: mips-linux-gnu-gcc (Debian 8.2.0-11) 8.2.0 > reproduce: > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > git checkout 6ce9e34a28174293927e0b51acc4d30a130a565a > # save the attached .config to linux build tree > GCC_VERSION=8.2.0 make.cross ARCH=mips > > All warnings (new ones prefixed by >>): > > lib/iomap.c: In function 'ioread8_rep': > >> lib/iomap.c:198:48: warning: passing argument 1 of 'mmio_insb' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] > IO_COND(addr, insb(port,dst,count), mmio_insb(addr, dst, count)); > ^~~~ > lib/iomap.c:54:3: note: in definition of macro 'IO_COND' > is_mmio; \ > ^~~~~~~ > lib/iomap.c:146:44: note: expected 'void *' but argument is of type 'const void *' > static inline void mmio_insb(void __iomem *addr, u8 *dst, int count) > ~~~~~~~~~~~~~~^~~~ It seems to be a result of applying the patches in the wrong order, in particular 'iomap: add missing const to ioread*/iowrite addr arg' before 'lib/iomap: add missing const to mmio_ins* addr arg'. I've swapped them around now and uploaded the new branch. Hugo, could you check git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git that it still makes sense to you? Arnd
