On Tue 29 Dec 2020 at 11:38, Greg Kroah-Hartman [off-list ref] wrote:

On Tue, Dec 29, 2020 at 04:38:44PM +0800, kernel test robot wrote:

quoted

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 <redacted>

All warnings (new ones prefixed by >>):

quoted

quoted

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.

Tested on 64bits platform only, sorry about that.
I'll respin with u64 which is the actual type of "hw.formats" .

greg k-h