Comment 164 for bug 792085

I see this behaviour as well on fully patched Fedora 24 with
kernel-4.6.4-301.fc24.x86_64

I have a LaCie 9223 1TB with USB ID 059f:1070. According to a google search this device uses a ASMedia 1053.
According to smartctl the HDD is a
Device Model: ST1000LM035-1RK172

If connected to USB 3 port on a
Gigabyte B85M-HD3 with
00:14.0 8086:8c31 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 04)
or a
ASUS Z170-P D3 onboard USB port

the drive powers down using "safely remove drive"...
Aug 9 10:56:16 pcwb ntfs-3g[11727]: Unmounting /dev/sdb1 (LaCie-1TB)
Aug 9 10:56:16 pcwb udisksd[1491]: Unmounted /dev/sdb1 on behalf of uid 1000
Aug 9 10:56:16 pcwb udisksd[1491]: Successfully sent SCSI command SYNCHRONIZE CACHE to /dev/sdb
Aug 9 10:56:17 pcwb udisksd[1491]: Successfully sent SCSI command START STOP UNIT to /dev/sdb
Aug 9 10:56:17 pcwb systemd-udevd: inotify_add_watch(9, /dev/sdb1, 10) failed: No such file or directory
Aug 9 10:56:17 pcwb kernel: sd 6:0:0:0: [sdb] Synchronizing SCSI cache
Aug 9 10:56:17 pcwb kernel: sd 6:0:0:0: [sdb] Synchronize Cache(10) failed: Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
Aug 9 10:56:17 pcwb udisksd[1491]: Powered off /dev/sdb - successfully wrote to sysfs path /sys/devices/pci0000:00/0000:00:14.0/usb4/4
-1/remove
Aug 9 10:56:17 pcwb kernel: usb 4-1: USB disconnect, device number 21

and immediately reappears...
Aug 9 10:56:17 pcwb kernel: usb 4-1: new SuperSpeed USB device number 22 using xhci_hcd
Aug 9 10:56:17 pcwb kernel: usb 4-1: New USB device found, idVendor=059f, idProduct=1070
Aug 9 10:56:17 pcwb kernel: usb 4-1: New USB device strings: Mfr=2, Product=3, SerialNumber=1
Aug 9 10:56:17 pcwb kernel: usb 4-1: Product: Porsche Mobile for Mac
Aug 9 10:56:17 pcwb kernel: usb 4-1: Manufacturer: LaCie