On 16.03.2015 22:17, Alan Stern wrote: > On Wed, 7 Jan 2015, Hans de Goede wrote: > >> Hi, >> >> On 07-01-15 16:19, Alan Stern wrote: >>> On Tue, 6 Jan 2015, Taegil Bae wrote: >>> >>>> Hi all, >>>> >>>> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=90791 >>>> >>>> My machine is Thinkpad Yoga with Onelink dock attached. Onelink dock >>>> is a USB 3.0 dock functioning as a USB 3.0 hub. This has two USB 3.0 >>>> ports in front. I connected a USB HDD enclosure to one of those ports. >>>> After use, I safely removed the storage device. But immediately that >>>> storage is connected. There is no such issue for laptop body's USB 3.0 >>>> ports or Onelink dock's USB 2.0 ports. >>>> >>>> I've tested in GNOME GUI and i3 CUI environment. In GNOME, I used >>>> gnome-disk utility. In i3, I echo'ed 1 to that USB 3.0 enclosure >>>> device's sysfs entry 'remove'. There is no difference. >>>> >>>> Using Onelink dock's USB 3.0 port: >>>> >>>> 1월 05 22:25:51 rapunzel kernel: usb 3-3-port4: logical disconnect >>>> <-- safely remove >>>> 1월 05 22:25:51 rapunzel kernel: hub 3-3:1.0: state 7 ports 4 chg 0010 evt 0000 >>>> 1월 05 22:25:51 rapunzel kernel: usb 3-3-port4: status 02b0, change >>>> 0000, 5.0 Gb/s >>>> 1월 05 22:25:51 rapunzel kernel: usb 3-3.4: USB disconnect, device number 4 >>>> 1월 05 22:25:51 rapunzel kernel: usb 3-3.4: unregistering device >>>> 1월 05 22:25:51 rapunzel kernel: hub 3-3:1.0: state 7 ports 4 chg 0000 evt 0010 >>>> 1월 05 22:25:51 rapunzel kernel: usb 3-3-port4: reset change >>>> 1월 05 22:25:51 rapunzel kernel: usb 3-3-port4: warm reset change >>>> 1월 05 22:25:51 rapunzel kernel: usb 3-3-port4: status 0203, change >>>> 0031, 5.0 Gb/s >>>> 1월 05 22:25:51 rapunzel kernel: usb 3-3-port4: debounce total 100ms >>>> stable 100ms status 0x203 >>>> 1월 05 22:25:51 rapunzel kernel: usb 3-3.4: new SuperSpeed USB device >>>> number 5 using xhci_hcd <-- reconnecting >>>> 1월 05 22:25:51 rapunzel kernel: usb 3-3.4: udev 5, busnum 3, minor = 260 >>>> 1월 05 22:25:51 rapunzel kernel: usb-storage 3-3.4:1.0: USB Mass >>>> Storage device detected >>>> 1월 05 22:25:51 rapunzel kernel: scsi host5: usb-storage 3-3.4:1.0 >>>> 1월 05 22:25:51 rapunzel kernel: hub 3-3:1.0: state 7 ports 4 chg 0000 evt 0010 >>>> 1월 05 22:25:52 rapunzel kernel: scsi 5:0:0:0: Direct-Access >>>> Corsair Force 3 SSD 5.07 PQ: 0 ANSI: 0 >>>> 1월 05 22:25:52 rapunzel kernel: sd 5:0:0:0: [sdb] 234441648 512-byte >>>> logical blocks: (120 GB/111 GiB) >>>> 1월 05 22:25:52 rapunzel kernel: sd 5:0:0:0: [sdb] Write Protect is off >>>> 1월 05 22:25:52 rapunzel kernel: sd 5:0:0:0: [sdb] Mode Sense: 03 00 00 00 >>>> 1월 05 22:25:52 rapunzel kernel: sd 5:0:0:0: [sdb] No Caching mode page found >>>> 1월 05 22:25:52 rapunzel kernel: sd 5:0:0:0: [sdb] Assuming drive >>>> cache: write through >>>> 1월 05 22:25:52 rapunzel kernel: sdb: unknown partition table >>>> 1월 05 22:25:52 rapunzel kernel: sd 5:0:0:0: [sdb] Attached SCSI disk >>>> 1월 05 22:25:53 rapunzel kernel: BTRFS info (device sdb): disk space >>>> caching is enabled >>>> 1월 05 22:25:53 rapunzel kernel: BTRFS: bdev /dev/sdb errs: wr 0, rd >>>> 1, flush 0, corrupt 0, gen 0 >>> >>> Clearly there's a bug in the SuperSpeed port-state logic in the hub >>> driver. Perhaps Hans can help fix the problems. If not, Mathias (the >>> xhci-hcd maintainer) may look at this after he gets back from vacation. >> >> I'm afraid that I already have too much work on my plate, and that I'm not >> 100% into the code in question, so this will have to wait till Mathias is >> back. > > Hans and Mathias: > > It appears that nobody has looked into this yet. What should Taegil do > to help track down the reason for the problem? > Missed this completely, I need to go though the logs in the bugreport first to see if I can spot anything xhci (or core/hub) related. -Mathias -- 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
