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Date: Fri, 15 Jul 2011 10:22:16 +0200 From: Nicolas de Pesloüan <nicolas.2p.debian@...il.com> To: wwguy <wey-yi.w.guy@...el.com>, dhalperi@...washington.edu CC: "netdev@...r.kernel.org" <netdev@...r.kernel.org>, wireless <linux-wireless@...r.kernel.org> Subject: Re: iwlagn: Random "Time out reading EEPROM". Le 05/06/2011 16:31, wwguy a écrit : > On Sat, 2011-06-04 at 06:14 -0700, Nicolas de Pesloüan wrote: >> Hi, >> >> From time to time, my Intel Wifi adapter fail on cold boot, with the following in dmesg: >> >> [ 7.442634] iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, 1.3.27ks >> [ 7.442636] iwlagn: Copyright(c) 2003-2009 Intel Corporation >> [ 7.442701] iwlagn 0000:05:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18 >> [ 7.442708] iwlagn 0000:05:00.0: setting latency timer to 64 >> [ 7.442788] iwlagn 0000:05:00.0: Detected Intel Wireless WiFi Link 5100AGN REV=0x54 >> [ 7.455547] iwlagn 0000:05:00.0: Time out reading EEPROM[0] >> [ 7.455611] iwlagn 0000:05:00.0: Unable to init EEPROM >> [ 7.455678] iwlagn 0000:05:00.0: PCI INT A disabled >> [ 7.455685] iwlagn: probe of 0000:05:00.0 failed with error -110 >> >> After "modprobe -r iwlagn ; modprobe iwlagn" or after a reboot, everything work fine: >> >> [ 346.332166] iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, 1.3.27ks >> [ 346.332169] iwlagn: Copyright(c) 2003-2009 Intel Corporation >> [ 346.332225] iwlagn 0000:05:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18 >> [ 346.332234] iwlagn 0000:05:00.0: setting latency timer to 64 >> [ 346.332277] iwlagn 0000:05:00.0: Detected Intel Wireless WiFi Link 5100AGN REV=0x54 >> [ 346.365739] iwlagn 0000:05:00.0: Tunable channels: 13 802.11bg, 24 802.11a channels >> [ 346.365787] alloc irq_desc for 33 on node -1 >> [ 346.365788] alloc kstat_irqs on node -1 >> [ 346.365804] iwlagn 0000:05:00.0: irq 33 for MSI/MSI-X >> [ 346.449989] phy0: Selected rate control algorithm 'iwl-agn-rs' >> >> This happens using 2.6.32-5 from Debian. I didn't had the opportunity to reproduce it using recent >> kernel, but it occurs too rarely to conclude anything. >> >> I had a look at the git log, without finding something that seems related to this problem. Does this >> ring a bell for someone? >> >> Nicolas. >> >> 05:00.0 Network controller: Intel Corporation WiFi Link 5100 >> Subsystem: Intel Corporation WiFi Link 5100 AGN >> Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- >> FastB2B- DisINTx- >> Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast>TAbort-<TAbort-<MAbort->SERR- >> <PERR- INTx- >> Latency: 0, Cache Line Size: 64 bytes >> Interrupt: pin A routed to IRQ 33 >> Region 0: Memory at d6d00000 (64-bit, non-prefetchable) [size=8K] >> Capabilities: [c8] Power Management version 3 >> Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+) >> Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- >> Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+ >> Address: 00000000fee0300c Data: 41c9 >> Capabilities: [e0] Express (v1) Endpoint, MSI 00 >> DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s<512ns, L1 unlimited >> ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+ >> DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- >> RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+ FLReset- >> MaxPayload 128 bytes, MaxReadReq 128 bytes >> DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend- >> LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0<128ns, L1<32us >> ClockPM+ Surprise- LLActRep- BwNot- >> LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+ >> ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- >> LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- >> Capabilities: [100 v1] Advanced Error Reporting >> UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- >> UnsupReq- ACSViol- >> UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- >> UnsupReq- ACSViol- >> UESvrt: DLP+ SDES- TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- >> UnsupReq- ACSViol- >> CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+ >> CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+ >> AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn- >> Capabilities: [140 v1] Device Serial Number 00-22-fb-ff-ff-28-46-c8 >> Kernel driver in use: iwlagn >> > > no sure, you are the ONLY one report this issue, since the device works > after you reload the module, the HW/SW is ok. maybe the timing/sequence > have problem on the kernel you are using on your system. The bus is not > ready when you boot the system and access the EEPROM. > > What model of the laptop you have? could you try to upgrade to newer > kernel? This problem also happens using 2.6.39-2-amd64 from Debian. [ 8.507426] iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree: [ 8.507429] iwlagn: Copyright(c) 2003-2010 Intel Corporation [ 8.507521] iwlagn 0000:05:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18 [ 8.507529] iwlagn 0000:05:00.0: setting latency timer to 64 [ 8.507556] iwlagn 0000:05:00.0: Detected Intel(R) WiFi Link 5100 AGN, REV=0x54 [ 8.516687] iwlagn 0000:05:00.0: Time out reading EEPROM[2] [ 8.516724] iwlagn 0000:05:00.0: Unable to init EEPROM [ 8.516739] iwlagn 0000:05:00.0: PCI INT A disabled [ 8.516745] iwlagn: probe of 0000:05:00.0 failed with error -110 modprobe -r iwlagn ; modprobe iwlagn [ 208.948664] iwlagn: Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree: [ 208.948666] iwlagn: Copyright(c) 2003-2010 Intel Corporation [ 208.948743] iwlagn 0000:05:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18 [ 208.948753] iwlagn 0000:05:00.0: setting latency timer to 64 [ 208.948817] iwlagn 0000:05:00.0: Detected Intel(R) WiFi Link 5100 AGN, REV=0x54 [ 208.969659] iwlagn 0000:05:00.0: device EEPROM VER=0x11f, CALIB=0x4 [ 208.969661] iwlagn 0000:05:00.0: Device SKU: 0Xb [ 208.969701] iwlagn 0000:05:00.0: Tunable channels: 13 802.11bg, 24 802.11a channels [ 208.969766] iwlagn 0000:05:00.0: irq 50 for MSI/MSI-X [ 209.048366] iwlagn 0000:05:00.0: loaded firmware version 8.83.5.1 build 33692 Because it happens not very often, I still didn't had the opportunity to reproduce it with up to date kernel. The laptop is a two years old Sony Vaio VGN-AW21M. Nicolas. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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