From: Stephen Hemminger <shemminger@linux-foundation.org>
Date: Fri, 28 Sep 2007 16:48:14 +0000 (-0700)
Subject: sky2: fix transmit state on resume
X-Git-Tag: v2.6.22.10~10
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ef24adc26f1c2712b9bc759116b30f721a7a5b61;p=thirdparty%2Fkernel%2Fstable.git

sky2: fix transmit state on resume

Already upstream.

After resume, driver has reset the chip so the current state
of transmit checksum offload state machine and DMA state machine
will be undefined.

The fix is to set the state so that first Tx will set MSS and offset
values.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index d9c8b9f692b7e..607b1a3228d5f 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -831,6 +831,20 @@ static inline struct sky2_tx_le *get_tx_le(struct sky2_port *sky2)
 	return le;
 }
 
+static void tx_init(struct sky2_port *sky2)
+{
+	struct sky2_tx_le *le;
+
+	sky2->tx_prod = sky2->tx_cons = 0;
+	sky2->tx_tcpsum = 0;
+	sky2->tx_last_mss = 0;
+
+	le = get_tx_le(sky2);
+	le->addr = 0;
+	le->opcode = OP_ADDR64 | HW_OWNER;
+	sky2->tx_addr64 = 0;
+}
+
 static inline struct tx_ring_info *tx_le_re(struct sky2_port *sky2,
 					    struct sky2_tx_le *le)
 {
@@ -1244,7 +1258,8 @@ static int sky2_up(struct net_device *dev)
 				GFP_KERNEL);
 	if (!sky2->tx_ring)
 		goto err_out;
-	sky2->tx_prod = sky2->tx_cons = 0;
+
+	tx_init(sky2);
 
 	sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES,
 					   &sky2->rx_le_map);