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| author | Takashi Iwai <tiwai@suse.de> | 2018-04-23 17:24:56 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2018-04-24 13:41:53 +0200 |
| commit | a9c2dfc8527318a27db045cd7ea51e8ecab8c884 (patch) | |
| tree | f951cd3875949bf9b330ac2fa62b252003da42f7 /include/sound/hdaudio.h | |
| parent | ALSA: usb-audio: add more quirks for DSD interfaces (diff) | |
| download | linux-a9c2dfc8527318a27db045cd7ea51e8ecab8c884.tar.xz linux-a9c2dfc8527318a27db045cd7ea51e8ecab8c884.zip | |
ALSA: hda - Use a macro for snd_array iteration loops
Introduce a new helper macro, snd_array_for_each(), to iterate for
each snd_array element. It slightly improves the readability than
lengthy open codes at each place.
Along with it, add const prefix to some obvious places.
There should be no functional changes by this.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound/hdaudio.h')
| -rw-r--r-- | include/sound/hdaudio.h | 5 |
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 */ |