[PATCH] iwlegacy: fix command queue timeout

[Stanislaw Gruszka <sgruszka@redhat.com>]

iwlegacy version of fix:

commit 282cdb325aea4ebbc42ce753b47cc96145eb54bc
Author: Johannes Berg <johannes.berg@intel.com>
Date:   Mon Sep 12 12:09:10 2011 -0700

    iwlagn: fix command queue timeout

    If the command queue is constantly busy,
    which can happen in P2P, the hangcheck
    timer will frequently find a command in
    it and will eventually reset the device
    because nothing sets the timestamp for
    this queue when commands are processed.

    Fix this by setting the timestamp when
    a command completes.

iwlegacy does not support P2P, but this patch fix possible
unneeded hardware resets, hence is needed.

Cc: stable@kernel.org  # 2.6.39+
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
---
 drivers/net/wireless/iwlegacy/iwl-tx.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/net/wireless/iwlegacy/iwl-tx.c b/drivers/net/wireless/iwlegacy/iwl-tx.c
index 4fff995..4b4489f 100644
--- a/drivers/net/wireless/iwlegacy/iwl-tx.c
+++ b/drivers/net/wireless/iwlegacy/iwl-tx.c
@@ -625,6 +625,8 @@ iwl_legacy_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
 	cmd = txq->cmd[cmd_index];
 	meta = &txq->meta[cmd_index];
 
+	txq->time_stamp = jiffies;
+
 	pci_unmap_single(priv->pci_dev,
 			 dma_unmap_addr(meta, mapping),
 			 dma_unmap_len(meta, len),
-- 
1.7.1