diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2012-03-05 11:24:26 -0800 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-03-06 15:16:09 -0500 |
| commit | 4ff70fcdf3c424c3fdca253e7b7556f77eaf39be (patch) | |
| tree | d60d5343463c3dcdc2969dc2df273716b2145927 /drivers/net/wireless/iwlwifi/iwl-agn-calib.c | |
| parent | fa23cb04b38a9950b21ee756e4419a737d496371 (diff) | |
iwlwifi: introduce statistics lock
The statistics are currently only half-heartedly
locked against concurrent reading & modification
so introduce a lock to really protect them.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-agn-calib.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn-calib.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-calib.c b/drivers/net/wireless/iwlwifi/iwl-agn-calib.c index 988ee454a94..12acc81ed41 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-calib.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-calib.c @@ -655,7 +655,6 @@ void iwl_sensitivity_calibration(struct iwl_priv *priv) struct iwl_sensitivity_data *data = NULL; struct statistics_rx_non_phy *rx_info; struct statistics_rx_phy *ofdm, *cck; - unsigned long flags; struct statistics_general_data statis; if (priv->disable_sens_cal) @@ -668,13 +667,13 @@ void iwl_sensitivity_calibration(struct iwl_priv *priv) return; } - spin_lock_irqsave(&priv->shrd->lock, flags); + spin_lock_bh(&priv->statistics.lock); rx_info = &priv->statistics.rx_non_phy; ofdm = &priv->statistics.rx_ofdm; cck = &priv->statistics.rx_cck; if (rx_info->interference_data_flag != INTERFERENCE_DATA_AVAILABLE) { IWL_DEBUG_CALIB(priv, "<< invalid data.\n"); - spin_unlock_irqrestore(&priv->shrd->lock, flags); + spin_unlock_bh(&priv->statistics.lock); return; } @@ -698,7 +697,7 @@ void iwl_sensitivity_calibration(struct iwl_priv *priv) statis.beacon_energy_c = le32_to_cpu(rx_info->beacon_energy_c); - spin_unlock_irqrestore(&priv->shrd->lock, flags); + spin_unlock_bh(&priv->statistics.lock); IWL_DEBUG_CALIB(priv, "rx_enable_time = %u usecs\n", rx_enable_time); @@ -958,7 +957,6 @@ void iwl_chain_noise_calibration(struct iwl_priv *priv) u16 stat_chnum = INITIALIZATION_VALUE; u8 rxon_band24; u8 stat_band24; - unsigned long flags; struct statistics_rx_non_phy *rx_info; /* @@ -983,13 +981,13 @@ void iwl_chain_noise_calibration(struct iwl_priv *priv) return; } - spin_lock_irqsave(&priv->shrd->lock, flags); + spin_lock_bh(&priv->statistics.lock); rx_info = &priv->statistics.rx_non_phy; if (rx_info->interference_data_flag != INTERFERENCE_DATA_AVAILABLE) { IWL_DEBUG_CALIB(priv, " << Interference data unavailable\n"); - spin_unlock_irqrestore(&priv->shrd->lock, flags); + spin_unlock_bh(&priv->statistics.lock); return; } @@ -1004,7 +1002,7 @@ void iwl_chain_noise_calibration(struct iwl_priv *priv) if ((rxon_chnum != stat_chnum) || (rxon_band24 != stat_band24)) { IWL_DEBUG_CALIB(priv, "Stats not from chan=%d, band24=%d\n", rxon_chnum, rxon_band24); - spin_unlock_irqrestore(&priv->shrd->lock, flags); + spin_unlock_bh(&priv->statistics.lock); return; } @@ -1023,7 +1021,7 @@ void iwl_chain_noise_calibration(struct iwl_priv *priv) chain_sig_b = le32_to_cpu(rx_info->beacon_rssi_b) & IN_BAND_FILTER; chain_sig_c = le32_to_cpu(rx_info->beacon_rssi_c) & IN_BAND_FILTER; - spin_unlock_irqrestore(&priv->shrd->lock, flags); + spin_unlock_bh(&priv->statistics.lock); data->beacon_count++; |