diff options
| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2021-02-10 14:29:26 +0200 |
|---|---|---|
| committer | Luca Coelho <luciano.coelho@intel.com> | 2021-02-10 14:39:43 +0200 |
| commit | abc599efa67bb4138536360e07d677052b19e392 (patch) | |
| tree | 2dbf3bd1c310ea2cd24886c2e5ff8a4a5a3fb671 /drivers/net/wireless/intel/iwlwifi/pcie/rx.c | |
| parent | 781b9ae4bc0b594fa0600244dbba04e949eae38e (diff) | |
| download | linux-abc599efa67bb4138536360e07d677052b19e392.tar.bz2 | |
iwlwifi: pcie: don't crash when rx queues aren't allocated in interrupt
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>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/pcie/rx.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/rx.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c index 534fe62b8a30..42426e25cac6 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c @@ -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(); |