From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mga14.intel.com ([143.182.124.37]:33892 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753618Ab1BIRJ3 (ORCPT ); Wed, 9 Feb 2011 12:09:29 -0500 Subject: Re: [PATCH v2] iwl3945: remove plcp check From: wwguy To: Stanislaw Gruszka Cc: Intel Linux Wireless , "linux-wireless@vger.kernel.org" , "stable@kernel.org" In-Reply-To: <20110209074606.GA5528@redhat.com> References: <20110208090446.GA2490@redhat.com> <1297180040.20613.39.camel@wwguy-ubuntu> <20110209063137.GD2184@redhat.com> <20110209074606.GA5528@redhat.com> Content-Type: text/plain; charset="UTF-8" Date: Wed, 09 Feb 2011 09:07:42 -0800 Message-ID: <1297271262.20613.66.camel@wwguy-ubuntu> Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Tue, 2011-02-08 at 23:46 -0800, Stanislaw Gruszka wrote: > 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 > Cc: stable@kernel.org # 2.6.35+ > Signed-off-by: Stanislaw Gruszka Acked-by: Wey-Yi Guy > --- > v1 -> v2 > Instead of tuning threshold remove the check completely > looks good for just minimal changes Wey