of_set_rw 200 arch/um/drivers/hostaudio_kern.c ret = os_open_file(dsp, of_set_rw(OPENFLAGS(), r, w), 0); of_set_rw 261 arch/um/drivers/hostaudio_kern.c ret = os_open_file(mixer, of_set_rw(OPENFLAGS(), r, w), 0);