diff options
author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2013-12-19 22:19:17 +0200 |
---|---|---|
committer | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2013-12-31 19:03:45 +0200 |
commit | fba1c62766340d3a6736c616a36494abb700dae8 (patch) | |
tree | aa0e3b69475182a0cd519529c73d155520c7f30f /drivers/net/wireless/iwlwifi/pcie | |
parent | 3dc3374fcebe30fefebf1fdce660d33b3e2bd0f9 (diff) |
iwlwifi: pcie: allow the op_mode to call stop_device whenever it wants
Calling stop_device when start_fw wasn't called would issue:
Stopping tx queues that aren't allocated...
Also allow the op_mode to call stop_device and then to
disable the Tx queues - in that case just silently ignore
the disabling on the Tx queues, since the PRPH registers
aren't reachable any more.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/pcie')
-rw-r--r-- | drivers/net/wireless/iwlwifi/pcie/tx.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/drivers/net/wireless/iwlwifi/pcie/tx.c b/drivers/net/wireless/iwlwifi/pcie/tx.c index 2417af9ad2c6..aec9d9f966a5 100644 --- a/drivers/net/wireless/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/iwlwifi/pcie/tx.c @@ -758,11 +758,17 @@ int iwl_pcie_tx_stop(struct iwl_trans *trans) } spin_unlock(&trans_pcie->irq_lock); - if (!trans_pcie->txq) { - IWL_WARN(trans, - "Stopping tx queues that aren't allocated...\n"); + /* + * This function can be called before the op_mode disabled the + * queues. This happens when we have an rfkill interrupt. + * Since we stop Tx altogether - mark the queues as stopped. + */ + memset(trans_pcie->queue_stopped, 0, sizeof(trans_pcie->queue_stopped)); + memset(trans_pcie->queue_used, 0, sizeof(trans_pcie->queue_used)); + + /* This can happen: start_hw, stop_device */ + if (!trans_pcie->txq) return 0; - } /* Unmap DMA from host system and free skb's */ for (txq_id = 0; txq_id < trans->cfg->base_params->num_of_queues; @@ -1150,8 +1156,15 @@ void iwl_trans_pcie_txq_disable(struct iwl_trans *trans, int txq_id) SCD_TX_STTS_QUEUE_OFFSET(txq_id); static const u32 zero_val[4] = {}; + /* + * Upon HW Rfkill - we stop the device, and then stop the queues + * in the op_mode. Just for the sake of the simplicity of the op_mode, + * allow the op_mode to call txq_disable after it already called + * stop_device. + */ if (!test_and_clear_bit(txq_id, trans_pcie->queue_used)) { - WARN_ONCE(1, "queue %d not used", txq_id); + WARN_ONCE(test_bit(STATUS_DEVICE_ENABLED, &trans->status), + "queue %d not used", txq_id); return; } |