--- zzzz-none-000/linux-3.10.107/sound/usb/6fire/control.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/sound/usb/6fire/control.c	2021-02-04 17:41:59.000000000 +0000
@@ -25,8 +25,8 @@
 #include "comm.h"
 #include "chip.h"
 
-static char *opt_coax_texts[2] = { "Optical", "Coax" };
-static char *line_phono_texts[2] = { "Line", "Phono" };
+static const char * const opt_coax_texts[2] = { "Optical", "Coax" };
+static const char * const line_phono_texts[2] = { "Line", "Phono" };
 
 /*
  * data that needs to be sent to device. sets up card internal stuff.
@@ -194,7 +194,8 @@
 	int changed = 0;
 
 	if (ch > 4) {
-		snd_printk(KERN_ERR PREFIX "Invalid channel in volume control.");
+		dev_err(&rt->chip->dev->dev,
+			"Invalid channel in volume control.");
 		return -EINVAL;
 	}
 
@@ -222,7 +223,8 @@
 	unsigned int ch = kcontrol->private_value;
 
 	if (ch > 4) {
-		snd_printk(KERN_ERR PREFIX "Invalid channel in volume control.");
+		dev_err(&rt->chip->dev->dev,
+			"Invalid channel in volume control.");
 		return -EINVAL;
 	}
 
@@ -240,7 +242,8 @@
 	u8 value = 0;
 
 	if (ch > 4) {
-		snd_printk(KERN_ERR PREFIX "Invalid channel in volume control.");
+		dev_err(&rt->chip->dev->dev,
+			"Invalid channel in volume control.");
 		return -EINVAL;
 	}
 
@@ -265,7 +268,8 @@
 	u8 value = rt->output_mute >> ch;
 
 	if (ch > 4) {
-		snd_printk(KERN_ERR PREFIX "Invalid channel in volume control.");
+		dev_err(&rt->chip->dev->dev,
+			"Invalid channel in volume control.");
 		return -EINVAL;
 	}
 
@@ -323,14 +327,7 @@
 static int usb6fire_control_line_phono_info(struct snd_kcontrol *kcontrol,
 		struct snd_ctl_elem_info *uinfo)
 {
-	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
-	uinfo->count = 1;
-	uinfo->value.enumerated.items = 2;
-	if (uinfo->value.enumerated.item > 1)
-		uinfo->value.enumerated.item = 1;
-	strcpy(uinfo->value.enumerated.name,
-			line_phono_texts[uinfo->value.enumerated.item]);
-	return 0;
+	return snd_ctl_enum_info(uinfo, 1, 2, line_phono_texts);
 }
 
 static int usb6fire_control_line_phono_put(struct snd_kcontrol *kcontrol,
@@ -357,14 +354,7 @@
 static int usb6fire_control_opt_coax_info(struct snd_kcontrol *kcontrol,
 		struct snd_ctl_elem_info *uinfo)
 {
-	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
-	uinfo->count = 1;
-	uinfo->value.enumerated.items = 2;
-	if (uinfo->value.enumerated.item > 1)
-		uinfo->value.enumerated.item = 1;
-	strcpy(uinfo->value.enumerated.name,
-			opt_coax_texts[uinfo->value.enumerated.item]);
-	return 0;
+	return snd_ctl_enum_info(uinfo, 1, 2, opt_coax_texts);
 }
 
 static int usb6fire_control_opt_coax_put(struct snd_kcontrol *kcontrol,
@@ -594,14 +584,14 @@
 	ret = usb6fire_control_add_virtual(rt, chip->card,
 		"Master Playback Volume", vol_elements);
 	if (ret) {
-		snd_printk(KERN_ERR PREFIX "cannot add control.\n");
+		dev_err(&chip->dev->dev, "cannot add control.\n");
 		kfree(rt);
 		return ret;
 	}
 	ret = usb6fire_control_add_virtual(rt, chip->card,
 		"Master Playback Switch", mute_elements);
 	if (ret) {
-		snd_printk(KERN_ERR PREFIX "cannot add control.\n");
+		dev_err(&chip->dev->dev, "cannot add control.\n");
 		kfree(rt);
 		return ret;
 	}
@@ -611,7 +601,7 @@
 		ret = snd_ctl_add(chip->card, snd_ctl_new1(&elements[i], rt));
 		if (ret < 0) {
 			kfree(rt);
-			snd_printk(KERN_ERR PREFIX "cannot add control.\n");
+			dev_err(&chip->dev->dev, "cannot add control.\n");
 			return ret;
 		}
 		i++;