From: Michael Brown <mcb30@etherboot.org>
Date: Tue, 23 Jun 2009 17:36:01 +0000 (+0100)
Subject: [e1000] Ensure descriptor is fully written before sending packet
X-Git-Tag: v0.9.8~115
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=5e1ef9846929a574a7e4712abdda45b3adca4c1a;p=thirdparty%2Fipxe.git

[e1000] Ensure descriptor is fully written before sending packet

Reported-by: Mark McLoughlin <markmc@redhat.com>
---

diff --git a/src/drivers/net/e1000/e1000.c b/src/drivers/net/e1000/e1000.c
index b6af86fc7..faca1e078 100644
--- a/src/drivers/net/e1000/e1000.c
+++ b/src/drivers/net/e1000/e1000.c
@@ -588,6 +588,7 @@ e1000_transmit ( struct net_device *netdev, struct io_buffer *iobuf )
 
 	/* Write new tail to NIC, making packet available for transmit
 	 */
+	wmb();
 	E1000_WRITE_REG ( hw, TDT, adapter->tx_tail );
 
 	return 0;