diff options
| author | Stanislaw Gruszka <sgruszka@redhat.com> | 2011-03-04 17:51:51 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-03-04 14:06:50 -0500 |
| commit | 410f2bb30d27252cc55a5f41668de60de62e5dc8 (patch) | |
| tree | db98f25482b239015fd7ec5027c971fca60ecce3 /drivers/net/wireless/iwlwifi/iwl-agn.c | |
| parent | 6198c387b25b528fd89a48bf67f0402d828ffa18 (diff) | |
| download | blackbird-op-linux-410f2bb30d27252cc55a5f41668de60de62e5dc8.tar.gz blackbird-op-linux-410f2bb30d27252cc55a5f41668de60de62e5dc8.zip | |
iwlwifi: avoid too frequent recover from statistics
Usually H/W generate statistics notify once per about 100ms, but
sometimes we can receive notify in shorter time, even 2 ms.
This can be problem for plcp health and ack health checking.
I.e. with 2 plcp errors happens randomly in 2 ms duration, we
exceed plcp delta threshold equal to 100 (2*100/2).
Also checking ack's in short time, can results not necessary false
positive and firmware reset, for example when channel is noised and
we do not receive ACKs frames or when remote device does not send
ACKs at the moment.
Patch change code to do statistic check and possible recovery only
if 99ms elapsed from last check. Forced delay should assure we have
good statistic data to estimate hardware state.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-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.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index 6b6f2d88be16..19bb567d1c52 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -3737,6 +3737,8 @@ static int iwl_init_drv(struct iwl_priv *priv) priv->force_reset[IWL_FW_RESET].reset_duration = IWL_DELAY_NEXT_FORCE_FW_RELOAD; + priv->rx_statistics_jiffies = jiffies; + /* Choose which receivers/antennas to use */ if (priv->cfg->ops->hcmd->set_rxon_chain) priv->cfg->ops->hcmd->set_rxon_chain(priv, |
