ALSA: snd-usb-caiaq: clean up the control adding code

snd-usb-caiaq: clean up the control adding code by moving dulpicate code
to a function.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

2 files changed, 31 insertions, 44 deletions

diff --git a/sound/usb/caiaq/caiaq-control.c b/sound/usb/caiaq/caiaq-control.c
index 798ca124da58..ccd763dd7167 100644
--- a/sound/usb/caiaq/caiaq-control.c
+++ b/sound/usb/caiaq/caiaq-control.c
@@ -247,69 +247,56 @@ static struct caiaq_controller a8dj_controller[] = {
         { "Software lock",                      40              }
 };
 
-int __devinit snd_usb_caiaq_control_init(struct snd_usb_caiaqdev *dev)
+static int __devinit add_controls(struct caiaq_controller *c, int num,
+                                  struct snd_usb_caiaqdev *dev)
 {
-        int i;
+        int i, ret;
         struct snd_kcontrol *kc;
 
+        for (i = 0; i < num; i++, c++) {
+                kcontrol_template.name = c->name;
+                kcontrol_template.private_value = c->index;
+                kc = snd_ctl_new1(&kcontrol_template, dev);
+                ret = snd_ctl_add(dev->chip.card, kc);
+                if (ret < 0)
+                        return ret;
+        }
+
+        return 0;
+}
+
+int __devinit snd_usb_caiaq_control_init(struct snd_usb_caiaqdev *dev)
+{
+        int ret = 0;
+
         switch (dev->chip.usb_id) {
         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
-                for (i = 0; i < ARRAY_SIZE(ak1_controller); i++) {
-                        struct caiaq_controller *c = ak1_controller + i;
-                        kcontrol_template.name = c->name;
-                        kcontrol_template.private_value = c->index;
-                        kc = snd_ctl_new1(&kcontrol_template, dev);
-                        snd_ctl_add(dev->chip.card, kc);
-                }
-
+                ret = add_controls(ak1_controller,
+                        ARRAY_SIZE(ak1_controller), dev);
                 break;
 
         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
-                for (i = 0; i < ARRAY_SIZE(rk2_controller); i++) {
-                        struct caiaq_controller *c = rk2_controller + i;
-                        kcontrol_template.name = c->name;
-                        kcontrol_template.private_value = c->index;
-                        kc = snd_ctl_new1(&kcontrol_template, dev);
-                        snd_ctl_add(dev->chip.card, kc);
-                }
-
+                ret = add_controls(rk2_controller,
+                        ARRAY_SIZE(rk2_controller), dev);
                 break;
 
         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
-                for (i = 0; i < ARRAY_SIZE(rk3_controller); i++) {
-                        struct caiaq_controller *c = rk3_controller + i;
-                        kcontrol_template.name = c->name;
-                        kcontrol_template.private_value = c->index;
-                        kc = snd_ctl_new1(&kcontrol_template, dev);
-                        snd_ctl_add(dev->chip.card, kc);
-                }
-
+                ret = add_controls(rk3_controller,
+                        ARRAY_SIZE(rk3_controller), dev);
                 break;
 
         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
-                for (i = 0; i < ARRAY_SIZE(kore_controller); i++) {
-                        struct caiaq_controller *c = kore_controller + i;
-                        kcontrol_template.name = c->name;
-                        kcontrol_template.private_value = c->index;
-                        kc = snd_ctl_new1(&kcontrol_template, dev);
-                        snd_ctl_add(dev->chip.card, kc);
-                }
-
+                ret = add_controls(kore_controller,
+                        ARRAY_SIZE(kore_controller), dev);
                 break;
 
         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ):
-                for (i = 0; i < ARRAY_SIZE(a8dj_controller); i++) {
-                        struct caiaq_controller *c = a8dj_controller + i;
-                        kcontrol_template.name = c->name;
-                        kcontrol_template.private_value = c->index;
-                        kc = snd_ctl_new1(&kcontrol_template, dev);
-                        snd_ctl_add(dev->chip.card, kc);
-                }
-
+                ret = add_controls(a8dj_controller,
+                        ARRAY_SIZE(a8dj_controller), dev);
                 break;
         }
 
-        return 0;
+        return ret;
 }
 
diff --git a/sound/usb/caiaq/caiaq-device.c b/sound/usb/caiaq/caiaq-device.c
index 83175083e50f..b143ef7152f7 100644
--- a/sound/usb/caiaq/caiaq-device.c
+++ b/sound/usb/caiaq/caiaq-device.c
@@ -42,7 +42,7 @@
 #endif
 
 MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
-MODULE_DESCRIPTION("caiaq USB audio, version 1.3.8");
+MODULE_DESCRIPTION("caiaq USB audio, version 1.3.9");
 MODULE_LICENSE("GPL");
 MODULE_SUPPORTED_DEVICE("{{Native Instruments, RigKontrol2},"
                          "{Native Instruments, RigKontrol3},"