There's a definition missing in audio_manager causing the kernel build to fail: CC [M] ./greybus/audio_manager.o ./greybus/audio_manager.c:22:8: warning: type defaults to 'int' in declaration of 'DEFINE_IDA' [-Wimplicit-int] error, forbidden warning: audio_manager.c:22 ./kernel/scripts/Makefile.build:308: recipe for target './greybus/audio_manager.o' failed Including linux/idr.h fixes the issue. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Greybus kernel code To build against the running kernel (odds are you don't want this): make To build against a specific kernel source tree (odds are you want this): KERNELDIR=/home/some/random/place make Any questions / concerns about this code base, please email: Greg Kroah-Hartman <greg@kroah.com>