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-rw-r--r--include/sound/hdaudio.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
index 06536e01ed94..c052afc27547 100644
--- a/include/sound/hdaudio.h
+++ b/include/sound/hdaudio.h
@@ -571,4 +571,9 @@ static inline unsigned int snd_array_index(struct snd_array *array, void *ptr)
return (unsigned long)(ptr - array->list) / array->elem_size;
}
+/* a helper macro to iterate for each snd_array element */
+#define snd_array_for_each(array, idx, ptr) \
+ for ((idx) = 0, (ptr) = (array)->list; (idx) < (array)->used; \
+ (ptr) = snd_array_elem(array, ++(idx)))
+
#endif /* __SOUND_HDAUDIO_H */