diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/pcie')
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/rx.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c index a40ad4675e19..953e0254a94c 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c @@ -1252,10 +1252,15 @@ static void iwl_pcie_rx_handle_rb(struct iwl_trans *trans, static void iwl_pcie_rx_handle(struct iwl_trans *trans, int queue) { struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); - struct iwl_rxq *rxq = &trans_pcie->rxq[queue]; + struct iwl_rxq *rxq; u32 r, i, count = 0; bool emergency = false; + if (WARN_ON_ONCE(!trans_pcie->rxq || !trans_pcie->rxq[queue].bd)) + return; + + rxq = &trans_pcie->rxq[queue]; + restart: spin_lock(&rxq->lock); /* uCode's read index (stored in shared DRAM) indicates the last Rx |