Return-path: Received: from canardo.mork.no ([148.122.252.1]:51175 "EHLO canardo.mork.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755838Ab2FVR63 convert rfc822-to-8bit (ORCPT ); Fri, 22 Jun 2012 13:58:29 -0400 From: =?utf-8?Q?Bj=C3=B8rn_Mork?= To: Intel Linux Wireless Cc: linux-wireless@vger.kernel.org Subject: iwlwifi: "GF was set with SGI:SISO" Date: Fri, 22 Jun 2012 19:58:23 +0200 Message-ID: <87lijfjkjk.fsf@nemi.mork.no> (sfid-20120622_195839_040723_F4125B6E) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: Hello, I just started receiving these mysterious error messages on each transmitted packet: Jun 22 19:48:21 nemi kernel: [255522.415447] iwlwifi 0000:03:00.0: GF was set with SGI:SISO Jun 22 19:48:21 nemi kernel: [255522.445200] iwlwifi 0000:03:00.0: GF was set with SGI:SISO Jun 22 19:48:21 nemi kernel: [255522.448130] iwlwifi 0000:03:00.0: GF was set with SGI:SISO Jun 22 19:48:21 nemi kernel: [255522.454865] iwlwifi 0000:03:00.0: GF was set with SGI:SISO Jun 22 19:48:21 nemi kernel: [255522.474708] iwlwifi 0000:03:00.0: GF was set with SGI:SISO Jun 22 19:48:21 nemi kernel: [255522.486878] iwlwifi 0000:03:00.0: GF was set with SGI:SISO which seems to originate from this code in drivers/net/wireless/iwlwifi/dvm/rs.c : if (use_green) { rate_n_flags |= RATE_MCS_GF_MSK; if (is_siso(tbl->lq_type) && tbl->is_SGI) { rate_n_flags &= ~RATE_MCS_SGI_MSK; IWL_ERR(priv, "GF was set with SGI:SISO\n"); } } But I do fail to see what I as an user is expected to do about this... Could the message be improved with some end user guidance? And it should obviously be rate-limited. I am using the driver from 3.5-rc2. The initial driver messages are: bjorn@nemi:~$ grep iwl /var/log/dmesg [ 11.771797] iwlwifi: Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree: [ 11.773943] iwlwifi: Copyright(c) 2003-2012 Intel Corporation [ 11.835304] bus: 'pci': add driver iwlwifi [ 11.835340] bus: 'pci': driver_probe_device: matched device 0000:03:00.0 with driver iwlwifi [ 11.835344] bus: 'pci': really_probe: probing driver iwlwifi with device 0000:03:00.0 [ 11.835422] iwlwifi 0000:03:00.0: pci_resource_len = 0x00002000 [ 11.835493] iwlwifi 0000:03:00.0: pci_resource_base = ffffc900057a4000 [ 11.835562] iwlwifi 0000:03:00.0: HW Revision ID = 0x0 [ 11.853318] iwlwifi 0000:03:00.0: irq 45 for MSI/MSI-X [ 11.853366] driver: '0000:03:00.0': driver_bound: bound to device 'iwlwifi' [ 11.853425] firmware 0000:03:00.0: firmware: requesting iwlwifi-5000-5.ucode [ 11.856712] bus: 'pci': really_probe: bound device 0000:03:00.0 to driver iwlwifi [ 12.521925] iwlwifi 0000:03:00.0: loaded firmware version 8.83.5.1 build 33692 [ 12.522628] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUG disabled [ 12.522675] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUGFS disabled [ 12.522719] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEVICE_TRACING disabled [ 12.522770] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEVICE_TESTMODE disabled [ 12.522817] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_P2P disabled [ 12.522861] iwlwifi 0000:03:00.0: Detected Intel(R) Ultimate N WiFi Link 5300 AGN, REV=0x24 [ 12.522989] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S [ 12.550242] iwlwifi 0000:03:00.0: device EEPROM VER=0x11e, CALIB=0x4 [ 12.550300] iwlwifi 0000:03:00.0: Device SKU: 0xF0 [ 12.550339] iwlwifi 0000:03:00.0: Valid Tx ant: 0x7, Valid Rx ant: 0x7 [ 12.550406] iwlwifi 0000:03:00.0: Tunable channels: 13 802.11bg, 24 802.11a channels [ 12.578444] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs' [ 30.708681] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S [ 30.709069] iwlwifi 0000:03:00.0: Radio type=0x0-0x2-0x0 [ 30.860998] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S [ 30.865388] iwlwifi 0000:03:00.0: Radio type=0x0-0x2-0x0 This is the first time I notice this issue, so I don't think it's very reproducible. Thanks, Bjørn