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>

1 files changed, 5 insertions, 5 deletions

diff --git a/sound/pci/hda/hda_auto_parser.c b/sound/pci/hda/hda_auto_parser.c
index d3ea73171a3d..b9a6b66aeb0e 100644
--- a/sound/pci/hda/hda_auto_parser.c
+++ b/sound/pci/hda/hda_auto_parser.c
@@ -793,11 +793,11 @@ EXPORT_SYMBOL_GPL(snd_hda_add_verbs);
  */
 void snd_hda_apply_verbs(struct hda_codec *codec)
 {
+	const struct hda_verb **v;
 	int i;
-	for (i = 0; i < codec->verbs.used; i++) {
-		struct hda_verb **v = snd_array_elem(&codec->verbs, i);
+
+	snd_array_for_each(&codec->verbs, i, v)
 		snd_hda_sequence_write(codec, *v);
-	}
 }
 EXPORT_SYMBOL_GPL(snd_hda_apply_verbs);
 
@@ -890,10 +890,10 @@ EXPORT_SYMBOL_GPL(snd_hda_apply_fixup);
 static bool pin_config_match(struct hda_codec *codec,
 			     const struct hda_pintbl *pins)
 {
+	const struct hda_pincfg *pin;
 	int i;
 
-	for (i = 0; i < codec->init_pins.used; i++) {
-		struct hda_pincfg *pin = snd_array_elem(&codec->init_pins, i);
+	snd_array_for_each(&codec->init_pins, i, pin) {
 		hda_nid_t nid = pin->nid;
 		u32 cfg = pin->cfg;
 		const struct hda_pintbl *t_pins;