[netdevice] Fix misleading comment on netdev_rx()

Unlike netdev_rx_err(), there is no valid circumstance under which
netdev_rx() may be called with a null I/O buffer, since a call to
netdev_rx() represents the successful reception of a packet.  Fix the
code comment to reflect this.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

diff --git a/src/net/netdevice.c b/src/net/netdevice.c
index 754799cd1da37f13fc4a15b863690b435332629f..6e685630c6c351b2b331c98d66b5d9c0e3b04ae0 100644 (file)
--- a/src/net/netdevice.c
+++ b/src/net/netdevice.c
@@ -478,7 +478,7 @@ static void netdev_tx_flush ( struct net_device *netdev ) {
  * Add packet to receive queue
  *
  * @v netdev           Network device
- * @v iobuf            I/O buffer, or NULL
+ * @v iobuf            I/O buffer
  *
  * The packet is added to the network device's RX queue.  This
  * function takes ownership of the I/O buffer.