Hi Vaibhav, I love your patch! Perhaps something to improve: [auto build test WARNING on staging/staging-testing] [also build test WARNING on v5.7-rc5 next-20200515] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Vaibhav-Agarwal/Enable-Greybus-A... base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git cef077e6aa4c7dbe2f23e1201cf705f9540ec467 config: i386-allyesconfig (attached as .config) reproduce: # apt-get install sparse # sparse version: v0.6.1-193-gb8fad4bc-dirty # save the attached .config to linux build tree make C=1 ARCH=i386 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/staging/greybus/audio_codec.c:701:36: sparse: sparse: incorrect type in initializer (different base types) @@ expected unsigned long long [usertype] formats @@ got restricteunsigned long long [usertype] formats @@ drivers/staging/greybus/audio_codec.c:701:36: sparse: expected unsigned long long [usertype] formats drivers/staging/greybus/audio_codec.c:701:36: sparse: got restricted snd_pcm_format_t [usertype] -- -- drivers/staging/greybus/audio_topology.c:748:52: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int @@ got restrunsigned int @@ drivers/staging/greybus/audio_topology.c:748:52: sparse: expected unsigned int drivers/staging/greybus/audio_topology.c:748:52: sparse: got restricted __le32 drivers/staging/greybus/audio_topology.c:803:42: sparse: sparse: restricted __le32 degrades to integer drivers/staging/greybus/audio_topology.c:815:50: sparse: sparse: restricted __le32 degrades to integer drivers/staging/greybus/audio_topology.c:818:58: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le32 @@ got icted __le32 @@ drivers/staging/greybus/audio_topology.c:818:58: sparse: expected restricted __le32 drivers/staging/greybus/audio_topology.c:818:58: sparse: got unsigned int drivers/staging/greybus/audio_topology.c:890:25: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int access @@ got restricted __le3unsigned int access @@ drivers/staging/greybus/audio_topology.c:890:25: sparse: expected unsigned int access drivers/staging/greybus/audio_topology.c:890:25: sparse: got restricted __le32 [usertype] access drivers/staging/greybus/audio_topology.c:906:14: sparse: sparse: restricted snd_ctl_elem_iface_t degrades to integer vim +691 drivers/staging/greybus/audio_codec.c d3d2af51f9c2f29 drivers/staging/greybus/audio-codec.c Vaibhav Agarwal 2015-11-23 683 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 684 static struct snd_soc_dai_driver gbaudio_dai[] = { 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 685 { 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 686 .name = "apb-i2s0", 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 687 .id = 0, 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 688 .playback = { 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 689 .stream_name = "I2S 0 Playback", 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 690 .rates = SNDRV_PCM_RATE_48000, 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 @691 .formats = SNDRV_PCM_FORMAT_S16_LE, 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 692 .rate_max = 48000, 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 693 .rate_min = 48000, 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 694 .channels_min = 1, 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 695 .channels_max = 2, 1023ab9c3800e58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2017-01-18 696 .sig_bits = 16, 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 697 }, 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 698 .capture = { 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 699 .stream_name = "I2S 0 Capture", 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 700 .rates = SNDRV_PCM_RATE_48000, 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 701 .formats = SNDRV_PCM_FORMAT_S16_LE, 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 702 .rate_max = 48000, 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 703 .rate_min = 48000, 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 704 .channels_min = 1, 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 705 .channels_max = 2, 1023ab9c3800e58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2017-01-18 706 .sig_bits = 16, 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 707 }, 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 708 .ops = &gbcodec_dai_ops, 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 709 }, 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 710 }; 19866603be2ad58 drivers/staging/greybus/audio_codec.c Vaibhav Agarwal 2016-08-04 711 :::::: The code at line 691 was first introduced by commit :::::: 19866603be2ad58735f82511f3d5f680e61479ea greybus: audio: Maintain runtime stream params for each DAI :::::: TO: Vaibhav Agarwal <vaibhav.agarwal(a)linaro.org&gt; :::::: CC: Greg Kroah-Hartman <gregkh(a)google.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org