src/patches/suse-2.6.27.25/patches.drivers/netxen-hold-tx-lock-while-sending-firmware-commands.patch

   1 From 03e678ee968ae54b79c1580c2935895bd863ad95 Mon Sep 17 00:00:00 2001
   2 From: Dhananjay Phadke <dhananjay@netxen.com>
   3 Date: Wed, 14 Jan 2009 20:49:43 -0800
   4 Subject: netxen: hold tx lock while sending firmware commands
   5 Acked-by: Karsten Keil <kkeil@novell.com>
   6 Reference: bnc#472416
   7
   8 Some firmware commands like mac address addition/deletion are sent
   9 on the transmit ring. So need to hold the tx lock before touching
  10 tx producer/consumer indices.
  11
  12 Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
  13 Signed-off-by: David S. Miller <davem@davemloft.net>
  14 ---
  15  drivers/net/netxen/netxen_nic_hw.c |    4 ++++
  16  1 files changed, 4 insertions(+), 0 deletions(-)
  17
  18 diff --git a/drivers/net/netxen/netxen_nic_hw.c b/drivers/net/netxen/netxen_nic_hw.c
  19 index e2d2a2f..821cff6 100644
  20 --- a/drivers/net/netxen/netxen_nic_hw.c
  21 +++ b/drivers/net/netxen/netxen_nic_hw.c
  22 @@ -503,6 +503,8 @@ netxen_send_cmd_descs(struct netxen_adapter *adapter,
  23
  24         i = 0;
  25
  26 +       netif_tx_lock_bh(adapter->netdev);
  27 +
  28         producer = adapter->cmd_producer;
  29         do {
  30                 cmd_desc = &cmd_desc_arr[i];
  31 @@ -527,6 +529,8 @@ netxen_send_cmd_descs(struct netxen_adapter *adapter,
  32
  33         netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer);
  34
  35 +       netif_tx_unlock_bh(adapter->netdev);
  36 +
  37         return 0;
  38  }
  39
  40 --
  41 1.5.6.4
  42