snd_ctl_elem_init_enum_names(): switch to vmemdup_user()

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

sound/core/control.c

@@ -1198,7 +1198,7 @@ static int snd_ctl_elem_init_enum_names(struct user_element *ue)
 	if (ue->info.value.enumerated.names_length > 64 * 1024)
 		return -EINVAL;
 
-	names = memdup_user((const void __user *)user_ptrval,
+	names = vmemdup_user((const void __user *)user_ptrval,
 		ue->info.value.enumerated.names_length);
 	if (IS_ERR(names))
 		return PTR_ERR(names);
@@ -1209,7 +1209,7 @@ static int snd_ctl_elem_init_enum_names(struct user_element *ue)
 	for (i = 0; i < ue->info.value.enumerated.items; ++i) {
 		name_len = strnlen(p, buf_len);
 		if (name_len == 0 || name_len >= 64 || name_len == buf_len) {
-			kfree(names);
+			kvfree(names);
 			return -EINVAL;
 		}
 		p += name_len + 1;
@@ -1227,7 +1227,7 @@ static void snd_ctl_elem_user_free(struct snd_kcontrol *kcontrol)
 	struct user_element *ue = kcontrol->private_data;
 
 	kvfree(ue->tlv_data);
-	kfree(ue->priv_data);
+	kvfree(ue->priv_data);
 	kfree(ue);
 }