Return-path: Received: from lo.gmane.org ([80.91.229.12]:34444 "EHLO lo.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030770Ab0B0UPP (ORCPT ); Sat, 27 Feb 2010 15:15:15 -0500 Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1NlT44-0000BB-BR for linux-wireless@vger.kernel.org; Sat, 27 Feb 2010 21:15:04 +0100 Received: from ip174-71-103-175.om.om.cox.net ([174.71.103.175]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 27 Feb 2010 21:15:04 +0100 Received: from reklipz by ip174-71-103-175.om.om.cox.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 27 Feb 2010 21:15:04 +0100 To: linux-wireless@vger.kernel.org From: Nathan Schulte Subject: Re: Make b43 driver fall back gracefully to PIO mode after fatal DMA errors Date: Sat, 27 Feb 2010 20:12:54 +0000 (UTC) Message-ID: References: <201002262120.37438.mb@bu3sch.de> <201002271836.04673.mb@bu3sch.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-wireless-owner@vger.kernel.org List-ID: Michael Buesch writes: > Please check if the following patch makes any difference. > Also please show me the result of the printks. I applied your modifications to 2.6.33 vanilla and they did not resolve the issue for me. My logs are as follows: [ 63.831811] b43-pci-bridge 0000:06:00.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19 [ 63.832210] b43-pci-bridge 0000:06:00.0: setting latency timer to 64 [ 63.840750] ssb: Core 0 found: ChipCommon (cc 0x800, rev 0x16, vendor 0x4243) [ 63.840776] ssb: Core 1 found: IEEE 802.11 (cc 0x812, rev 0x0F, vendor 0x4243) [ 63.840800] ssb: Core 2 found: PCMCIA (cc 0x80D, rev 0x0A, vendor 0x4243) [ 63.840823] ssb: Core 3 found: PCI-E (cc 0x820, rev 0x09, vendor 0x4243) [ 63.848426] PMU res init 4312/4322 [ 63.865510] ssb: Sonics Silicon Backplane found on PCI device 0000:06:00.0 [ 63.891491] b43-phy0: Broadcom 4312 WLAN found (core revision 15) [ 63.920485] phy0: Selected rate control algorithm 'minstrel' [ 63.923025] Registered led device: b43-phy0::tx [ 63.923624] Registered led device: b43-phy0::rx [ 63.924105] Registered led device: b43-phy0::radio [ 63.924749] Broadcom 43xx driver loaded [ Features: PL, Firmware-ID: FW13 ] [ 68.014700] b43 ssb0:0: firmware: requesting b43/ucode15.fw [ 68.101055] b43 ssb0:0: firmware: requesting b43/lp0initvals15.fw [ 68.116067] b43 ssb0:0: firmware: requesting b43/lp0bsinitvals15.fw [ 68.359461] b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23) [ 68.363765] Set LDO 4312 [ 68.363878] Set LDO paref [ 69.775354] ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 70.363498] b43-phy0 ERROR: Fatal DMA error: 0x00000800, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000 [ 70.363514] b43-phy0 ERROR: This device does not support DMA on your system. Please use PIO instead. [ 70.363522] b43-phy0 ERROR: CONFIG_B43_FORCE_PIO must be set in your kernel configuration. [ 77.437270] wlan0: direct probe to AP 00:1c:f0:e8:e2:13 (try 1) [ 77.637152] wlan0: direct probe to AP 00:1c:f0:e8:e2:13 (try 2) [ 77.837166] wlan0: direct probe to AP 00:1c:f0:e8:e2:13 (try 3) [ 78.037074] wlan0: direct probe to AP 00:1c:f0:e8:e2:13 timed out [ 101.047357] b43-pci-bridge 0000:06:00.0: PCI INT A disabled -Nate