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. Alan Stern -- 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
