diff --git a/drivers/media/dvb-core/dvb_ringbuffer.c b/drivers/media/dvb-core/dvb_ringbuffer.c
index a5712cd..1100e98 100644
--- a/drivers/media/dvb-core/dvb_ringbuffer.c
+++ b/drivers/media/dvb-core/dvb_ringbuffer.c
@@ -166,6 +166,31 @@
 	return len;
 }
 
+ssize_t dvb_ringbuffer_write_user(struct dvb_ringbuffer *rbuf,
+				  const u8 __user *buf, size_t len)
+{
+	int status;
+	size_t todo = len;
+	size_t split;
+
+	split = (rbuf->pwrite + len > rbuf->size) ? rbuf->size - rbuf->pwrite : 0;
+
+	if (split > 0) {
+		status = copy_from_user(rbuf->data+rbuf->pwrite, buf, split);
+		if (status)
+			return len - todo;
+		buf += split;
+		todo -= split;
+		rbuf->pwrite = 0;
+	}
+	status = copy_from_user(rbuf->data+rbuf->pwrite, buf, todo);
+	if (status)
+		return len - todo;
+	rbuf->pwrite = (rbuf->pwrite + todo) % rbuf->size;
+
+	return len;
+}
+
 ssize_t dvb_ringbuffer_pkt_write(struct dvb_ringbuffer *rbuf, u8* buf, size_t len)
 {
 	int status;
@@ -297,3 +322,4 @@
 EXPORT_SYMBOL(dvb_ringbuffer_read_user);
 EXPORT_SYMBOL(dvb_ringbuffer_read);
 EXPORT_SYMBOL(dvb_ringbuffer_write);
+EXPORT_SYMBOL(dvb_ringbuffer_write_user);
diff --git a/drivers/media/dvb-core/dvb_ringbuffer.h b/drivers/media/dvb-core/dvb_ringbuffer.h
index 41f04da..9e1e11b 100644
--- a/drivers/media/dvb-core/dvb_ringbuffer.h
+++ b/drivers/media/dvb-core/dvb_ringbuffer.h
@@ -133,6 +133,8 @@
 */
 extern ssize_t dvb_ringbuffer_write(struct dvb_ringbuffer *rbuf, const u8 *buf,
 				    size_t len);
+extern ssize_t dvb_ringbuffer_write_user(struct dvb_ringbuffer *rbuf,
+				         const u8 __user *buf, size_t len);
 
 
 /**
diff --git a/drivers/media/pci/ngene/ngene-dvb.c b/drivers/media/pci/ngene/ngene-dvb.c
index a8a4045..59bb285 100644
--- a/drivers/media/pci/ngene/ngene-dvb.c
+++ b/drivers/media/pci/ngene/ngene-dvb.c
@@ -59,7 +59,7 @@
 				     (&dev->tsout_rbuf) >= count) < 0)
 		return 0;
 
-	dvb_ringbuffer_write(&dev->tsout_rbuf, buf, count);
+	dvb_ringbuffer_write_user(&dev->tsout_rbuf, buf, count);
 
 	return count;
 }