staging: goldfish: fix direct copy_to_user() from __iomem

index a166424..535ed20 100644
@@ -118,10 +118,17 @@ static ssize_t goldfish_audio_read(struct file *fp, char __user *buf,
 	struct goldfish_audio *data = fp->private_data;
 	int length;
 	int result = 0;
+	unsigned int order;
+	void *read_buffer;
 
 	if (!data->read_supported)
 		return -ENODEV;
 
+	order = get_order(READ_BUFFER_SIZE);
+	read_buffer = (void *)__get_free_pages(GFP_KERNEL, order);
+	if (!read_buffer)
+		return -ENOMEM;
+
 	while (count > 0) {
 		length = (count > READ_BUFFER_SIZE ? READ_BUFFER_SIZE : count);
 		AUDIO_WRITE(data, AUDIO_START_READ, length);

@@ -129,17 +136,21 @@ static ssize_t goldfish_audio_read(struct file *fp, char __user *buf,
 		wait_event_interruptible(data->wait,
 			(data->buffer_status & AUDIO_INT_READ_BUFFER_FULL));
 
-		length = AUDIO_READ(data,
-						AUDIO_READ_BUFFER_AVAILABLE);
+		length = AUDIO_READ(data, AUDIO_READ_BUFFER_AVAILABLE);
 
 		/* copy data to user space */
-		if (copy_to_user(buf, data->read_buffer, length))
-			return -EFAULT;
+		ioread8_rep(data->read_buffer, read_buffer, length);
+		if (copy_to_user(buf, read_buffer, length)) {
+			result = -EFAULT;
+			goto error;
+		}
 
 		result += length;
 		buf += length;
 		count -= length;
 	}
+error:
+	__free_pages(read_buffer, order);
 	return result;
 }