iwlagn: downgrade BUG_ON in interrupt

commit 55d6a3cd0cc85ed90c39cf32e16f622bd003117b upstream.

This BUG_ON really shouldn't trigger, but if it does, as on my machine,
it leaves you wondering what happened because you won't see it. Let's
instead leak a bit of state and memory and at least make it possible to
report it to the kerneloops project to track it.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Cc: François Valenduc <francois.valenduc@tvcablenet.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/net/wireless/iwlwifi/iwl-tx.c b/drivers/net/wireless/iwlwifi/iwl-tx.c
index 78b1a7a4ca409b88e8663d37643b1bf07fcdad69..67da11bb26a2d949c2b8a7d5ad586439e4ab191e 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-tx.c
@@ -1192,10 +1192,9 @@ void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
        /* If a Tx command is being handled and it isn't in the actual
         * command queue then there a command routing bug has been introduced
         * in the queue management code. */
-       if (txq_id != IWL_CMD_QUEUE_NUM)
-               IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
-                         txq_id, pkt->hdr.cmd);
-       BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
+       if (WARN(txq_id != IWL_CMD_QUEUE_NUM,
+                "wrong command queue %d, command id 0x%X\n", txq_id, pkt->hdr.cmd))
+               return;
 
        cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
        cmd = priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];