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iwlwifi: pcie: don't crash when rx queues aren't allocated in interrupt

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WARNING is better than crashing. Since this happened to me,
be on the safe side.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210210142629.d4651427fcda.I1bcecb73676d039e2521309c07fc6b6314a90546@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Emmanuel Grumbach 2021-02-10 14:29:26 +02:00 committed by Luca Coelho
parent 781b9ae4bc
commit abc599efa6
1 changed files with 3 additions and 0 deletions
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3
drivers/net/wireless/intel/iwlwifi/pcie/rx.c
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@ -1658,6 +1658,9 @@ irqreturn_t iwl_pcie_irq_rx_msix_handler(int irq, void *dev_id)
if (WARN_ON(entry->entry >= trans->num_rx_queues))
return IRQ_NONE;
if (WARN_ONCE(!rxq, "Got MSI-X interrupt before we have Rx queues"))
return IRQ_NONE;
lock_map_acquire(&trans->sync_cmd_lockdep_map);
local_bh_disable();