tree: https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git topic/midi20-gadget head: ed28b6939ebadd073e731ccf0f2c6ce4ab102ffd commit: ed28b6939ebadd073e731ccf0f2c6ce4ab102ffd [56/56] usb: gadget: add support for USB MIDI 2.0 function driver (WIP) config: x86_64-buildonly-randconfig-r001-20230629 (https://download.01.org/0day-ci/archive/20230630/202306300642.o48bLzoB-lkp@i...) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce: (https://download.01.org/0day-ci/archive/20230630/202306300642.o48bLzoB-lkp@i...)

If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot lkp@intel.com | Closes: https://lore.kernel.org/oe-kbuild-all/202306300642.o48bLzoB-lkp@intel.com/

All errors (new ones prefixed by >>):

ld: drivers/usb/gadget/function/f_midi2.o: in function `f_midi2_create.constprop.0':

...

f_midi2.c:(.text+0x27f2): undefined reference to `snd_ump_endpoint_new' ld: f_midi2.c:(.text+0x29a5): undefined reference to `snd_ump_block_new'

ld: drivers/usb/gadget/function/f_midi2.o: in function `process_ump_transmit':

...

f_midi2.c:(.text+0x4a69): undefined reference to `snd_ump_transmit'

ld: drivers/usb/gadget/function/f_midi2.o: in function `f_midi2_ep_out_complete':

...

f_midi2.c:(.text+0x5af1): undefined reference to `snd_ump_receive_ump_val' ld: f_midi2.c:(.text+0x5bef): undefined reference to `snd_ump_receive'