Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965377Ab1C3VLi (ORCPT ); Wed, 30 Mar 2011 17:11:38 -0400 Received: from mga02.intel.com ([134.134.136.20]:50512 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965354Ab1C3VKX (ORCPT ); Wed, 30 Mar 2011 17:10:23 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.63,270,1299484800"; d="scan'208";a="621239606" From: Andi Kleen References: <20110330203.501921634@firstfloor.org> In-Reply-To: <20110330203.501921634@firstfloor.org> To: sgruszka@redhat.com, wey-yi.w.guy@intel.com, ak@linux.intel.com, linux-kernel@vger.kernel.org, stable@kernel.org, tim.bird@am.sony.com Subject: [PATCH] [268/275] [PATCH 2.6.35] iwl3945: remove plcp check Message-Id: <20110330210835.CA5D23E1A06@tassilo.jf.intel.com> Date: Wed, 30 Mar 2011 14:08:35 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1816 Lines: 44 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 Acked-by: Wey-Yi Guy Signed-off-by: Stanislaw Gruszka Signed-off-by: Andi Kleen --- 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, -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/