From: Michael Brown <mcb30@ipxe.org>
Date: Sat, 3 May 2014 00:07:38 +0000 (+0100)
Subject: [pxe] Work around missing PXENV_UNDI_OPEN only when necessary
X-Git-Tag: v1.20.1~1194
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=206bd7bb64ddda692056ce1ebd68efbf794af803;p=thirdparty%2Fipxe.git

[pxe] Work around missing PXENV_UNDI_OPEN only when necessary

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

diff --git a/src/arch/i386/interface/pxe/pxe_undi.c b/src/arch/i386/interface/pxe/pxe_undi.c
index a17b9b3b0..29e586ed2 100644
--- a/src/arch/i386/interface/pxe/pxe_undi.c
+++ b/src/arch/i386/interface/pxe/pxe_undi.c
@@ -330,8 +330,10 @@ pxenv_undi_transmit ( struct s_PXENV_UNDI_TRANSMIT *undi_transmit ) {
 	 * processing at this point, to work around callers that never
 	 * call PXENV_UNDI_OPEN before attempting to use the UNDI API.
 	 */
-	netdev_rx_freeze ( pxe_netdev );
-	netdev_irq ( pxe_netdev, 1 );
+	if ( ! netdev_rx_frozen ( pxe_netdev ) ) {
+		netdev_rx_freeze ( pxe_netdev );
+		netdev_irq ( pxe_netdev, 1 );
+	}
 
 	/* Identify network-layer protocol */
 	switch ( undi_transmit->Protocol ) {