On Tue, 25 Aug 2015 14:51:56 +0300, Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx> wrote: > Add extra command ring, event ring and command queue debugging > to get more info on command mismatch error triggered by > Vincent Pelletier on BayTrail Thanks, applied, built and loaded on target. > will blurt out around 500 lines when hitting a command mismatch I'm not sure how I'll get this (I have a lot to learn about kernel debugging). FWIW, I gave a try at unloading and reloading just xhci_pci, and the error did not pop up after more than 30 cycles. I wonder if this means BIOS legacy mode would be messing with the wrong knob, or there would be a timing issue in bios-to-kernel transition. For reference, below are the command I used while tail -f /var/log/messages was running in another terminal, and the output of one iteration. "sleep" is just here to let the block layer time to scan for partitions. # for INDEX in $(seq 30); do logger "TRY $INDEX" ; rmmod xhci_pci; modprobe xhci_pci; sleep 4; done Aug 25 21:00:17 boke vincent: TRY 30 Aug 25 21:00:17 boke kernel: [12189.241047] xhci_hcd 0000:00:14.0: remove, state 4 Aug 25 21:00:17 boke kernel: [12189.241070] usb usb2: USB disconnect, device number 1 Aug 25 21:00:17 boke kernel: [12189.241077] usb 2-1: USB disconnect, device number 2 Aug 25 21:00:17 boke kernel: [12189.242468] xhci_hcd 0000:00:14.0: USB bus 2 deregistered Aug 25 21:00:17 boke kernel: [12189.242489] xhci_hcd 0000:00:14.0: remove, state 1 Aug 25 21:00:17 boke kernel: [12189.242507] usb usb1: USB disconnect, device number 1 Aug 25 21:00:17 boke kernel: [12189.242513] usb 1-1: USB disconnect, device number 2 Aug 25 21:00:17 boke kernel: [12189.243109] usb 1-4: USB disconnect, device number 3 Aug 25 21:00:17 boke kernel: [12189.292936] xhci_hcd 0000:00:14.0: USB bus 1 deregistered Aug 25 21:00:17 boke kernel: [12189.317727] xhci_hcd 0000:00:14.0: xHCI Host Controller Aug 25 21:00:17 boke kernel: [12189.317744] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 1 Aug 25 21:00:17 boke kernel: [12189.396920] xhci_hcd 0000:00:14.0: hcc params 0x200071e1 hci version 0x100 quirks 0x00009810 Aug 25 21:00:17 boke kernel: [12189.403037] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 Aug 25 21:00:17 boke kernel: [12189.403043] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 Aug 25 21:00:17 boke kernel: [12189.403046] usb usb1: Product: xHCI Host Controller Aug 25 21:00:17 boke kernel: [12189.403048] usb usb1: Manufacturer: Linux 4.1.4+ xhci-hcd Aug 25 21:00:17 boke kernel: [12189.403051] usb usb1: SerialNumber: 0000:00:14.0 Aug 25 21:00:17 boke kernel: [12189.403494] hub 1-0:1.0: USB hub found Aug 25 21:00:17 boke kernel: [12189.403513] hub 1-0:1.0: 6 ports detected Aug 25 21:00:17 boke kernel: [12189.415715] xhci_hcd 0000:00:14.0: xHCI Host Controller Aug 25 21:00:17 boke kernel: [12189.415734] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 2 Aug 25 21:00:17 boke kernel: [12189.415857] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003 Aug 25 21:00:17 boke kernel: [12189.415861] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 Aug 25 21:00:17 boke kernel: [12189.415864] usb usb2: Product: xHCI Host Controller Aug 25 21:00:17 boke kernel: [12189.415866] usb usb2: Manufacturer: Linux 4.1.4+ xhci-hcd Aug 25 21:00:17 boke kernel: [12189.415869] usb usb2: SerialNumber: 0000:00:14.0 Aug 25 21:00:17 boke kernel: [12189.416154] hub 2-0:1.0: USB hub found Aug 25 21:00:17 boke kernel: [12189.416169] hub 2-0:1.0: 1 port detected Aug 25 21:00:18 boke kernel: [12189.715846] usb 1-1: new high-speed USB device number 2 using xhci_hcd Aug 25 21:00:18 boke kernel: [12189.727977] usb 2-1: new SuperSpeed USB device number 2 using xhci_hcd Aug 25 21:00:18 boke kernel: [12189.746396] usb 2-1: New USB device found, idVendor=05e3, idProduct=0617 Aug 25 21:00:18 boke kernel: [12189.746404] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 Aug 25 21:00:18 boke kernel: [12189.746410] usb 2-1: Product: USB3.0 Hub Aug 25 21:00:18 boke kernel: [12189.746415] usb 2-1: Manufacturer: GenesysLogic Aug 25 21:00:18 boke kernel: [12189.748478] hub 2-1:1.0: USB hub found Aug 25 21:00:18 boke kernel: [12189.748749] hub 2-1:1.0: 4 ports detected Aug 25 21:00:18 boke kernel: [12189.853414] usb 1-1: New USB device found, idVendor=05e3, idProduct=0610 Aug 25 21:00:18 boke kernel: [12189.853424] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 Aug 25 21:00:18 boke kernel: [12189.853430] usb 1-1: Product: USB2.0 Hub Aug 25 21:00:18 boke kernel: [12189.853435] usb 1-1: Manufacturer: GenesysLogic Aug 25 21:00:18 boke kernel: [12189.854340] hub 1-1:1.0: USB hub found Aug 25 21:00:18 boke kernel: [12189.854757] hub 1-1:1.0: 4 ports detected Aug 25 21:00:18 boke kernel: [12190.024031] usb 1-4: new high-speed USB device number 3 using xhci_hcd Aug 25 21:00:18 boke kernel: [12190.153360] usb 1-4: New USB device found, idVendor=1005, idProduct=b155 Aug 25 21:00:18 boke kernel: [12190.153368] usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Aug 25 21:00:18 boke kernel: [12190.153374] usb 1-4: Product: USB DISK MODULE Aug 25 21:00:18 boke kernel: [12190.153379] usb 1-4: Manufacturer: Aug 25 21:00:18 boke kernel: [12190.153384] usb 1-4: SerialNumber: 190047218A9B0B32 Aug 25 21:00:18 boke kernel: [12190.153975] usb-storage 1-4:1.0: USB Mass Storage device detected Aug 25 21:00:18 boke kernel: [12190.154153] scsi host67: usb-storage 1-4:1.0 Aug 25 21:00:19 boke kernel: [12191.153301] scsi 67:0:0:0: Direct-Access USB DISK MODULE PMAP PQ: 0 ANSI: 0 CCS Aug 25 21:00:19 boke kernel: [12191.154065] sd 67:0:0:0: Attached scsi generic sg6 type 0 Aug 25 21:00:19 boke kernel: [12191.156002] sd 67:0:0:0: [sdg] 1007616 512-byte logical blocks: (515 MB/492 MiB) Aug 25 21:00:19 boke kernel: [12191.158680] sd 67:0:0:0: [sdg] Write Protect is off Aug 25 21:00:19 boke kernel: [12191.185604] sdg: sdg1 sdg2 Aug 25 21:00:19 boke kernel: [12191.191764] sd 67:0:0:0: [sdg] Attached SCSI removable disk Regards, -- Vincent Pelletier -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
