[media] bttv: rename field 'audio' in struct 'bttv' to 'audio_input'

'audio_input' better describes the meaning of this field.
Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/pci/bt8xx/bttv-cards.c

@@ -3947,7 +3947,7 @@ static void avermedia_eeprom(struct bttv *btv)
 u32 bttv_tda9880_setnorm(struct bttv *btv, u32 gpiobits)
 {
 
-	if (btv->audio == TVAUDIO_INPUT_TUNER) {
+	if (btv->audio_input == TVAUDIO_INPUT_TUNER) {
 		if (bttv_tvnorms[btv->tvnorm].v4l2_id & V4L2_STD_MN)
 			gpiobits |= 0x10000;
 		else

drivers/media/pci/bt8xx/bttv-driver.c

@@ -1093,7 +1093,7 @@ audio_mux(struct bttv *btv, int input, int mute)
 static inline int
 audio_mute(struct bttv *btv, int mute)
 {
-	return audio_mux(btv, btv->audio, mute);
+	return audio_mux(btv, btv->audio_input, mute);
 }
 
 static inline int
@@ -1195,9 +1195,9 @@ set_input(struct bttv *btv, unsigned int input, unsigned int norm)
 	} else {
 		video_mux(btv,input);
 	}
-	btv->audio = (btv->tuner_type != TUNER_ABSENT && input == 0) ?
+	btv->audio_input = (btv->tuner_type != TUNER_ABSENT && input == 0) ?
 				TVAUDIO_INPUT_TUNER : TVAUDIO_INPUT_EXTERN;
-	audio_input(btv, btv->audio);
+	audio_input(btv, btv->audio_input);
 	set_tvnorm(btv, norm);
 }
 
@@ -1706,8 +1706,8 @@ static void radio_enable(struct bttv *btv)
 	if (!btv->has_radio_tuner) {
 		btv->has_radio_tuner = 1;
 		bttv_call_all(btv, tuner, s_radio);
-		btv->audio = TVAUDIO_INPUT_RADIO;
-		audio_input(btv, btv->audio);
+		btv->audio_input = TVAUDIO_INPUT_RADIO;
+		audio_input(btv, btv->audio_input);
 	}
 }
 

drivers/media/pci/bt8xx/bttvp.h

@@ -423,7 +423,7 @@ struct bttv {
 
 	/* video state */
 	unsigned int input;
-	unsigned int audio;
+	unsigned int audio_input;
 	unsigned int mute;
 	unsigned long tv_freq;
 	unsigned int tvnorm;