diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-agn-rx.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn-rx.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rx.c b/drivers/net/wireless/iwlwifi/iwl-agn-rx.c index aba1da231d70..93a687175fa6 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-rx.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-rx.c @@ -284,6 +284,45 @@ static bool iwlagn_good_plcp_health(struct iwl_priv *priv, return true; } +int iwl_force_rf_reset(struct iwl_priv *priv, bool external) +{ + struct iwl_rf_reset *rf_reset; + + if (test_bit(STATUS_EXIT_PENDING, &priv->status)) + return -EAGAIN; + + if (!iwl_is_any_associated(priv)) { + IWL_DEBUG_SCAN(priv, "force reset rejected: not associated\n"); + return -ENOLINK; + } + + rf_reset = &priv->rf_reset; + rf_reset->reset_request_count++; + if (!external && rf_reset->last_reset_jiffies && + time_after(rf_reset->last_reset_jiffies + + IWL_DELAY_NEXT_FORCE_RF_RESET, jiffies)) { + IWL_DEBUG_INFO(priv, "RF reset rejected\n"); + rf_reset->reset_reject_count++; + return -EAGAIN; + } + rf_reset->reset_success_count++; + rf_reset->last_reset_jiffies = jiffies; + + /* + * There is no easy and better way to force reset the radio, + * the only known method is switching channel which will force to + * reset and tune the radio. + * Use internal short scan (single channel) operation to should + * achieve this objective. + * Driver should reset the radio when number of consecutive missed + * beacon, or any other uCode error condition detected. + */ + IWL_DEBUG_INFO(priv, "perform radio reset.\n"); + iwl_internal_short_hw_scan(priv); + return 0; +} + + static void iwlagn_recover_from_statistics(struct iwl_priv *priv, struct statistics_rx_phy *cur_ofdm, struct statistics_rx_ht_phy *cur_ofdm_ht, |