usb: gadget: uac: correct f_audio_source.c to remove warning

Meng Dongyang · rkhuangtao · commit 576b831ae19c · 2018-06-11T18:18:33.000+08:00
If the CONFIG_USB_CONFIGFS is not define, the 'audio_source_bind_config'
may be unused. Corrcet warning of no previous prototype for
'audio_source_bind_config' by adding judgment of CONFIG_USB_CONFIGFS
macro definition.

Change-Id: I174ae996c1d53e78b76f72cf463bc1efb189675b
Signed-off-by: Meng Dongyang &lt;daniel.meng@rock-chips.com&gt;
diff --git a/drivers/usb/gadget/function/f_audio_source.c b/drivers/usb/gadget/function/f_audio_source.c
@@ -1215,6 +1215,7 @@ static struct snd_pcm_ops audio_playback_ops = {
 	.pointer	= audio_pcm_pointer,
 };
 
+#ifndef CONFIG_USB_CONFIGFS
 int audio_source_bind_config(struct usb_configuration *c,
 		struct audio_source_config *config)
 {
@@ -1253,6 +1254,7 @@ int audio_source_bind_config(struct usb_configuration *c,
 	snd_card_free(audio->card);
 	return err;
 }
+#endif
 
 static int snd_card_setup(struct usb_configuration *c,
 		struct audio_source_config *config)

Original file line number	Diff line number	Diff line change
`@@ -1215,6 +1215,7 @@ static struct snd_pcm_ops audio_playback_ops = {`
`1215`	`1215`	`.pointer = audio_pcm_pointer,`
`1216`	`1216`	`};`
`1217`	`1217`
	`1218`	`+#ifndef CONFIG_USB_CONFIGFS`
`1218`	`1219`	`int audio_source_bind_config(struct usb_configuration *c,`
`1219`	`1220`	`struct audio_source_config *config)`
`1220`	`1221`	`{`
`@@ -1253,6 +1254,7 @@ int audio_source_bind_config(struct usb_configuration *c,`
`1253`	`1254`	`snd_card_free(audio->card);`
`1254`	`1255`	`return err;`
`1255`	`1256`	`}`
	`1257`	`+#endif`
`1256`	`1258`
`1257`	`1259`	`static int snd_card_setup(struct usb_configuration *c,`
`1258`	`1260`	`struct audio_source_config *config)`