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iwlwifi: pcie: fix ALIVE interrupt handling for gen2 devices w/o MSI-X

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commit ec46ae3024 upstream.

We added code to restock the buffer upon ALIVE interrupt
when MSI-X is disabled. This was added as part of the context
info code. This code was added only if the ISR debug level
is set which is very unlikely to be related.
Move this code to run even when the ISR debug level is not
set.

Note that gen2 devices work with MSI-X in most cases so that
this path is seldom used.

Cc: stable@vger.kernel.org
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Emmanuel Grumbach
2019-05-21 15:03:21 +03:00
committed by Greg Kroah-Hartman
parent abd4a98c86
commit 1a03a8f707
1 changed files with 16 additions and 18 deletions
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34
drivers/net/wireless/intel/iwlwifi/pcie/rx.c
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@@ -1674,25 +1674,23 @@ irqreturn_t iwl_pcie_irq_handler(int irq, void *dev_id)
goto out;
}
if (iwl_have_debug_level(IWL_DL_ISR)) {
/* NIC fires this, but we don't use it, redundant with WAKEUP */
if (inta & CSR_INT_BIT_SCD) {
IWL_DEBUG_ISR(trans,
"Scheduler finished to transmit the frame/frames.\n");
isr_stats->sch++;
}
/* NIC fires this, but we don't use it, redundant with WAKEUP */
if (inta & CSR_INT_BIT_SCD) {
IWL_DEBUG_ISR(trans,
"Scheduler finished to transmit the frame/frames.\n");
isr_stats->sch++;
}
/* Alive notification via Rx interrupt will do the real work */
if (inta & CSR_INT_BIT_ALIVE) {
IWL_DEBUG_ISR(trans, "Alive interrupt\n");
isr_stats->alive++;
if (trans->cfg->gen2) {
/*
* We can restock, since firmware configured
* the RFH
*/
iwl_pcie_rxmq_restock(trans, trans_pcie->rxq);
}
/* Alive notification via Rx interrupt will do the real work */
if (inta & CSR_INT_BIT_ALIVE) {
IWL_DEBUG_ISR(trans, "Alive interrupt\n");
isr_stats->alive++;
if (trans->cfg->gen2) {
/*
* We can restock, since firmware configured
* the RFH
*/
iwl_pcie_rxmq_restock(trans, trans_pcie->rxq);
}
}