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    Subject[PATCH] [268/275] [PATCH 2.6.35] iwl3945: remove plcp check
    Date
    2.6.35-longterm review patch.  If anyone has any objections, please let me know.

    ------------------
    commit c91d01556f52255a31575be0cb1981c92a2a5028 upstream.

    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 removing plcp check fixed problem for him.

    Reported-and-tested-by: SilvioTO <silviotoya@yahoo.it>
    Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
    Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
    Signed-off-by: Andi Kleen <ak@linux.intel.com>

    ---
    drivers/net/wireless/iwlwifi/iwl-3945.c | 1 -
    1 file changed, 1 deletion(-)

    Index: linux-2.6.35.y/drivers/net/wireless/iwlwifi/iwl-3945.c
    ===================================================================
    --- linux-2.6.35.y.orig/drivers/net/wireless/iwlwifi/iwl-3945.c 2011-01-13 09:47:51.000000000 -0800
    +++ linux-2.6.35.y/drivers/net/wireless/iwlwifi/iwl-3945.c 2011-03-29 23:46:19.212792817 -0700
    @@ -2837,7 +2837,6 @@
    .config_ap = iwl3945_config_ap,
    .manage_ibss_station = iwl3945_manage_ibss_station,
    .recover_from_tx_stall = iwl_bg_monitor_recover,
    - .check_plcp_health = iwl3945_good_plcp_health,

    .debugfs_ops = {
    .rx_stats_read = iwl3945_ucode_rx_stats_read,

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