Hi all,
Today's linux-next merge of the net tree got a conflict in
drivers/net/wireless/iwlwifi/iwl-agn.c between commit
d4dca4e53fde2953d74198a2c445db1d36ed9fd2 ("iwlwifi: clear unattended
interrupts in tasklet") from the wireless-current tree and commit
a4c8b2a692601de0a7bcb032b69f806050944dff ("iwlwifi: move ICT data to agn
part of union") from the net tree.
I fixed it up (see below) and can carry the fix for a while.
--
Cheers,
Stephen Rothwell sfr@xxxxxxxxxxxxxxxx
diff --cc drivers/net/wireless/iwlwifi/iwl-agn.c
index e4c2e1e,0a376f7..0000000
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@@ -1258,17 -1236,9 +1236,17 @@@ static void iwl_irq_tasklet(struct iwl_
/* Ack/clear/reset pending uCode interrupts.
* Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
*/
- iwl_write32(priv, CSR_INT, priv->_agn.inta);
+ /* There is a hardware bug in the interrupt mask function that some
+ * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if
+ * they are disabled in the CSR_INT_MASK register. Furthermore the
+ * ICT interrupt handling mechanism has another bug that might cause
+ * these unmasked interrupts fail to be detected. We workaround the
+ * hardware bugs here by ACKing all the possible interrupts so that
+ * interrupt coalescing can still be achieved.
+ */
- iwl_write32(priv, CSR_INT, priv->inta | ~priv->inta_mask);
++ iwl_write32(priv, CSR_INT, priv->_agn.inta | ~priv->inta_mask);
- inta = priv->inta;
+ inta = priv->_agn.inta;
#ifdef CONFIG_IWLWIFI_DEBUG
if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
--
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