iwl3945: increase plcp check threshold Patch fixes: https://bugzilla.redhat.com/show_bug.cgi?id=654599
Many users report very low speed problem on 3945 devices, this patch fixes problem, but only for some of them. For unknown reason, sometimes after hw scanning, device is not able to receive frames at high rate. Since plcp health check may request hw scan to "reset radio", performance problem start to be observable after update kernel to .35, where plcp check was introduced. Bug reporter confirmed that increase plcp check threshold fixed problem for him. Reported-and-tested-by: SilvioTO <[email protected]> Cc: [email protected] # 2.6.35+ Signed-off-by: Stanislaw Gruszka <[email protected]> --- Patch is oneliner, but does not apply on older kernel versions, I will provide -stable patches when fix will land in mainline diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c index 58213e7..27faa5e 100644 --- a/drivers/net/wireless/iwlwifi/iwl-3945.c +++ b/drivers/net/wireless/iwlwifi/iwl-3945.c @@ -2775,7 +2775,7 @@ static struct iwl_base_params iwl3945_base_params = { .use_isr_legacy = true, .led_compensation = 64, .broken_powersave = true, - .plcp_delta_threshold = IWL_MAX_PLCP_ERR_LONG_THRESHOLD_DEF, + .plcp_delta_threshold = IWL_MAX_PLCP_ERR_THRESHOLD_MAX, .wd_timeout = IWL_DEF_WD_TIMEOUT, .max_event_log_size = 512, .tx_power_by_driver = true, _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
