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iwlagn: Clarify FH_TX interrupt

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Add/clarify comments and debug messages for interrupt used only for uCode load

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ben Cahill 2009-10-30 14:36:08 -07:00 committed by John W. Linville
parent a6c5c731c3
commit c72cd19fab
1 changed files with 6 additions and 4 deletions
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10
drivers/net/wireless/iwlwifi/iwl-agn.c
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@ -1033,11 +1033,12 @@ static void iwl_irq_tasklet_legacy(struct iwl_priv *priv)
handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
}
/* This "Tx" DMA channel is used only for loading uCode */
if (inta & CSR_INT_BIT_FH_TX) {
IWL_DEBUG_ISR(priv, "Tx interrupt\n");
IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
priv->isr_stats.tx++;
handled |= CSR_INT_BIT_FH_TX;
/* FH finished to write, send event */
/* Wake up uCode load routine, now that load is complete */
priv->ucode_write_complete = 1;
wake_up_interruptible(&priv->wait_command_queue);
}
@ -1234,12 +1235,13 @@ static void iwl_irq_tasklet(struct iwl_priv *priv)
iwl_leds_background(priv);
}
/* This "Tx" DMA channel is used only for loading uCode */
if (inta & CSR_INT_BIT_FH_TX) {
iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_TX_MASK);
IWL_DEBUG_ISR(priv, "Tx interrupt\n");
IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
priv->isr_stats.tx++;
handled |= CSR_INT_BIT_FH_TX;
/* FH finished to write, send event */
/* Wake up uCode load routine, now that load is complete */
priv->ucode_write_complete = 1;
wake_up_interruptible(&priv->wait_command_queue);
}