tree: https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git for-linus head: 9ebaef0540a981093bce5df15af32354d32391d9 commit: 265d1a90e4fb6d3264d8122fbd10760e5e733be6 [117/119] ALSA: usb-audio: scarlett2: Improve driver startup messages config: x86_64-randconfig-s021-20210522 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/commit/?id=265d1a90e4fb6d3264d8122fbd10760e5e733be6 git remote add sound https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git git fetch --no-tags sound for-linus git checkout 265d1a90e4fb6d3264d8122fbd10760e5e733be6 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> sound/usb/mixer_scarlett_gen2.c:2000:5: sparse: sparse: symbol 'snd_scarlett_gen2_controls_create' was not declared. Should it be static? Please review and possibly fold the followup patch. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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