Defined in 2 files as a macro:

• include/uapi/sound/asound.h, line 1219 (as a macro)
• tools/perf/trace/beauty/include/uapi/sound/asound.h, line 1200 (as a macro)

Referenced in 2 files:

• sound/core/control.c, line 2045
• sound/core/control_compat.c, line 448