On Tue, Dec 29, 2020 at 04:38:44PM +0800, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing > head: 32510cf5e554e8f2cecafea8b8cc11daa4afb9e6 > commit: 32510cf5e554e8f2cecafea8b8cc11daa4afb9e6 [8/8] usb: gadget: u_audio: factorize ssize to alsa fmt conversion > config: arm-randconfig-r003-20201229 (attached as .config) > compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project cee1e7d14f4628d6174b33640d502bff3b54ae45) > 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 > # install arm cross compiling tool for clang build > # apt-get install binutils-arm-linux-gnueabi > # https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git/commit/?id=32510cf5e554e8f2cecafea8b8cc11daa4afb9e6 > git remote add usb https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git > git fetch --no-tags usb usb-testing > git checkout 32510cf5e554e8f2cecafea8b8cc11daa4afb9e6 > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@xxxxxxxxx> > > All warnings (new ones prefixed by >>): > > >> drivers/usb/gadget/function/u_audio.c:248:9: warning: implicit conversion from 'unsigned long long' to 'unsigned long' changes value from 4294967296 to 0 [-Wconstant-conversion] > ret = SNDRV_PCM_FMTBIT_S24_3LE; > ~ ^~~~~~~~~~~~~~~~~~~~~~~~ > include/sound/pcm.h:170:34: note: expanded from macro 'SNDRV_PCM_FMTBIT_S24_3LE' > #define SNDRV_PCM_FMTBIT_S24_3LE _SNDRV_PCM_FMTBIT(S24_3LE) > ^~~~~~~~~~~~~~~~~~~~~~~~~~ > include/sound/pcm.h:139:39: note: expanded from macro '_SNDRV_PCM_FMTBIT' > #define _SNDRV_PCM_FMTBIT(fmt) (1ULL << (__force int)SNDRV_PCM_FORMAT_##fmt) > ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 1 warning generated. I'm dropping this patch from my tree now, thanks. greg k-h
