Return-path: Received: from mail-wy0-f174.google.com ([74.125.82.174]:49906 "EHLO mail-wy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753375Ab1KCWhd convert rfc822-to-8bit (ORCPT ); Thu, 3 Nov 2011 18:37:33 -0400 Received: by wyh15 with SMTP id 15so1726337wyh.19 for ; Thu, 03 Nov 2011 15:37:32 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <4EB2AF44.7090102@lwfinger.net> References: <48883.148.106.128.38.1320319313.metamail@webmail.meta.ua> <4EB2AF44.7090102@lwfinger.net> Date: Thu, 3 Nov 2011 23:37:31 +0100 Message-ID: (sfid-20111103_233736_984322_828B08C6) Subject: Re: b43 scans wifi networks with old firmware only. From: =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= To: Larry Finger Cc: roman-vl@meta.ua, linux-wireless@vger.kernel.org Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: 2011/11/3 Larry Finger : > On 11/03/2011 06:21 AM, Roman V.Leon. wrote: >> >> Hello Gents. >> I have problem with b43 driver 5.100.138, it's not scanning networks for >> unknown reason. I have broadcom wifi card PCIID is 14e4:4315, linux kern >> ver. is 3.0. When i'm trying to launch iwlist scan, i'm getting "no scan >> results". >> >> for example: >> sudo ifconfig wlan0 up >> sudo iwlist wlan0 scan >>     No scan results. >> >> With the older driver 5.10.56.2808, i see normal scan results. If you need >> any more information, i will send. > > The condition you report is known. Broadcom changed the TX/RX header > structure with firmware versions greater than 600, as shown by a 'dmesg | > grep firmware'. Those changes are not implemented in b43 until kernel 3.2. > > These numbers are not b43 driver numbers, nor are they firmware numbers > reported by b43. They are the versions of Broadcom drivers. > > If you look at > http://wireless.kernel.org/en/users/Drivers/b43#firmwareinstallation, you > will see that firmware should be extracted from Broadcom driver 5.100.138 > "if you are using kernel 3.2 or newer". For older kernels you should extract > firmware from the 5.10.56.27.3 of the Broadcom proprietary driver. Of > course, 5.10.56.2808 will also work. > >  You could also get those changes by employing a bleeding-edge version of > compat-wireless. In that case, firmware from 5.100.138 would work. Should we/can we send patch for at least 3.0.x and 3.1.x kernels adding error on loading too new firmware? -- Rafał