Administrace komentářů

Používam OpenWRT 21.02.1 na dvoch starších routeroch od TPLINKU (WDR4300 a ARCHER C2). Na oboch funguje extroot na usb flash disku. Keďže Archer má len 1 usb port, tak som kvôli potrebe pripojenia viacerých USB zariadení nútený využiť usb hub (axagon HUE-X6GB). Problém nastáva po pripojení usb flash disku cez hub. V logu sa objavujú chyby v prístupe na flash disk. Po pripojení toho istého hub-u na wdr4300 funguje všetko bez najmenších problémov. V čom by to mohlo byť a ako to vyriešiť? Predpokladám, že HUB potrebujem mať napajaný (axagon napájaný je) nakoľko budem používať usb tethering cez anroid telefón. Vďaka za pomoc.

dmesg

[    0.000000] Linux version 5.4.154 (builder@buildhost) (gcc version 8.4.0 (OpenWrt GCC 8.4.0 r16325-88151b8303)) #0 Sun Oct 24 09:01:35 2021
[    0.000000] Board has DDR2
[    0.000000] Analog PMU set to hw control
[    0.000000] Digital PMU set to hw control
[    0.000000] SoC Type: MediaTek MT7620A ver:2 eco:6
[    0.000000] printk: bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 00019650 (MIPS 24KEc)
[    0.000000] MIPS: machine is TP-Link Archer C2 v1
[    0.000000] Initrd not found or empty - disabling initrd
[    0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
[    0.000000] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
[    0.000000] Zone ranges:
[    0.000000]   Normal   [mem 0x0000000000000000-0x0000000003ffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x0000000003ffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x0000000003ffffff]
[    0.000000] On node 0 totalpages: 16384
[    0.000000]   Normal zone: 144 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 16384 pages, LIFO batch:3
[    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[    0.000000] pcpu-alloc: [0] 0 
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 16240
[    0.000000] Kernel command line: console=ttyS0,115200 rootfstype=squashfs,jffs2
[    0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes, linear)
[    0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes, linear)
[    0.000000] Writing ErrCtl register=0000000e
[    0.000000] Readback ErrCtl register=0000000e
[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.000000] Memory: 57492K/65536K available (5065K kernel code, 211K rwdata, 632K rodata, 1188K init, 213K bss, 8044K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] NR_IRQS: 256
[    0.000000] random: get_random_bytes called from 0x805c7a28 with crng_init=0
[    0.000000] CPU Clock: 580MHz
[    0.000000] clocksource: systick: mask: 0xffff max_cycles: 0xffff, max_idle_ns: 583261500 ns
[    0.000000] systick: enable autosleep mode
[    0.000000] systick: running - mult: 214748, shift: 32
[    0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6590553264 ns
[    0.000011] sched_clock: 32 bits at 290MHz, resolution 3ns, wraps every 7405115902ns
[    0.007623] Calibrating delay loop... 385.02 BogoMIPS (lpj=770048)
[    0.045512] pid_max: default: 32768 minimum: 301
[    0.050209] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.057277] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.071988] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[    0.081464] futex hash table entries: 256 (order: -1, 3072 bytes, linear)
[    0.088149] pinctrl core: initialized pinctrl subsystem
[    0.094767] NET: Registered protocol family 16
[    0.560182] PCI host bridge /pcie@10140000 ranges:
[    0.564802]  MEM 0x0000000020000000..0x000000002fffffff
[    0.569856]   IO 0x0000000010160000..0x000000001016ffff
[    0.598181] rt2880_gpio 10000600.gpio: registering 24 gpios
[    0.603661] rt2880_gpio 10000600.gpio: registering 24 irq handlers
[    0.610038] rt2880_gpio 10000638.gpio: registering 16 gpios
[    0.615477] rt2880_gpio 10000638.gpio: registering 16 irq handlers
[    0.621815] rt2880_gpio 10000660.gpio: registering 32 gpios
[    0.627253] rt2880_gpio 10000660.gpio: registering 32 irq handlers
[    0.633593] rt2880_gpio 10000688.gpio: registering 1 gpios
[    0.638937] rt2880_gpio 10000688.gpio: registering 1 irq handlers
[    0.645801] PCI host bridge to bus 0000:00
[    0.649783] pci_bus 0000:00: root bus resource [mem 0x20000000-0x2fffffff]
[    0.656410] pci_bus 0000:00: root bus resource [io  0x10160000-0x1016ffff]
[    0.663087] pci_bus 0000:00: root bus resource [??? 0x00000000 flags 0x0]
[    0.669677] pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
[    0.677415] pci 0000:00:00.0: [1814:0801] type 01 class 0x060400
[    0.683238] pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x7fffffff]
[    0.689299] pci 0000:00:00.0: reg 0x14: [mem 0x00000000-0x0000ffff]
[    0.695460] pci 0000:00:00.0: supports D1
[    0.699284] pci 0000:00:00.0: PME# supported from D0 D1 D3hot
[    0.707239] pci 0000:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring
[    0.715214] pci 0000:01:00.0: [14c3:7650] type 00 class 0x028000
[    0.721067] pci 0000:01:00.0: reg 0x10: [mem 0x00000000-0x000fffff]
[    0.727254] pci 0000:01:00.0: PME# supported from D0 D3hot D3cold
[    0.733408] pci 0000:01:00.1: [14c3:8650] type 00 class 0x0d1100
[    0.739250] pci 0000:01:00.1: reg 0x10: [mem 0x00000000-0x000fffff]
[    0.745427] pci 0000:01:00.1: supports D1
[    0.749250] pci 0000:01:00.1: PME# supported from D0 D1 D3hot D3cold
[    0.757790] pci_bus 0000:01: busn_res: [bus 01-ff] end is updated to 01
[    0.764202] pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 01
[    0.770625] pci 0000:00:00.0: BAR 0: no space for [mem size 0x80000000]
[    0.777015] pci 0000:00:00.0: BAR 0: failed to assign [mem size 0x80000000]
[    0.783780] pci 0000:00:00.0: BAR 8: assigned [mem 0x20000000-0x201fffff]
[    0.790374] pci 0000:00:00.0: BAR 1: assigned [mem 0x20200000-0x2020ffff]
[    0.796977] pci 0000:01:00.0: BAR 0: assigned [mem 0x20000000-0x200fffff]
[    0.803567] pci 0000:01:00.1: BAR 0: assigned [mem 0x20100000-0x201fffff]
[    0.810153] pci 0000:00:00.0: PCI bridge to [bus 01]
[    0.814967] pci 0000:00:00.0:   bridge window [mem 0x20000000-0x201fffff]
[    0.821673] workqueue: max_active 576 requested for napi_workq is out of range, clamping between 1 and 512
[    0.837926] clocksource: Switched to clocksource systick
[    0.844241] thermal_sys: Registered thermal governor 'step_wise'
[    0.844685] NET: Registered protocol family 2
[    0.854900] IP idents hash table entries: 2048 (order: 2, 16384 bytes, linear)
[    0.862820] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 4096 bytes, linear)
[    0.870980] TCP established hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.878395] TCP bind hash table entries: 1024 (order: 0, 4096 bytes, linear)
[    0.885230] TCP: Hash tables configured (established 1024 bind 1024)
[    0.891552] UDP hash table entries: 256 (order: 0, 4096 bytes, linear)
[    0.897913] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes, linear)
[    0.904985] NET: Registered protocol family 1
[    0.909300] PCI: CLS 0 bytes, default 32
[    0.916291] rt-timer 10000100.timer: maximum frequency is 1220Hz
[    0.924420] workingset: timestamp_bits=14 max_order=14 bucket_order=0
[    0.939417] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.945082] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[    0.970212] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)
[    0.980530] Serial: 8250/16550 driver, 16 ports, IRQ sharing enabled
[    0.989732] printk: console [ttyS0] disabled
[    0.993970] 10000c00.uartlite: ttyS0 at MMIO 0x10000c00 (irq = 20, base_baud = 2500000) is a Palmchip BK-3103
[    1.003585] printk: console [ttyS0] enabled
[    1.012057] printk: bootconsole [early0] disabled
[    1.031076] spi spi0.0: force spi mode3
[    1.040436] spi-nor spi0.0: mx25l6405d (8192 Kbytes)
[    1.045602] 6 fixed-partitions partitions found on MTD device spi0.0
[    1.052104] Creating 6 MTD partitions on "spi0.0":
[    1.057017] 0x000000000000-0x000000020000 : "u-boot"
[    1.063256] 0x000000020000-0x0000007c0000 : "firmware"
[    1.072160] 2 tplink-fw partitions found on MTD device firmware
[    1.078289] Creating 2 MTD partitions on "firmware":
[    1.083385] 0x000000000000-0x0000001e665a : "kernel"
[    1.089598] 0x0000001e665c-0x0000007a0000 : "rootfs"
[    1.095816] mtd: device 3 (rootfs) set to be root filesystem
[    1.103756] 1 squashfs-split partitions found on MTD device rootfs
[    1.110163] 0x00000050b000-0x0000007a0000 : "rootfs_data"
[    1.116859] 0x0000007c0000-0x0000007d0000 : "config"
[    1.123100] 0x0000007d0000-0x0000007e0000 : "rom"
[    1.129086] 0x0000007e0000-0x0000007f0000 : "romfile"
[    1.135431] 0x0000007f0000-0x000000800000 : "radio"
[    1.142616] libphy: Fixed MDIO Bus: probed
[    1.160607] gsw: setting port4 to ephy mode
[    1.165328] libphy: mdio: probed
[    1.168729] mtk_soc_eth 10100000.ethernet: using fixed link parameters
[    1.175617] mtk_soc_eth 10100000.ethernet: loaded mt7620 driver
[    1.182430] mtk_soc_eth 10100000.ethernet eth0: mediatek frame engine at 0xb0100000, irq 5
[    1.191448] rt2880_wdt 10000120.watchdog: Initialized
[    1.198446] NET: Registered protocol family 10
[    1.207866] Segment Routing with IPv6
[    1.211853] NET: Registered protocol family 17
[    1.216497] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[    1.229746] 8021q: 802.1Q VLAN Support v1.8
[    1.241268] VFS: Mounted root (squashfs filesystem) readonly on device 31:3.
[    1.255281] Freeing unused kernel memory: 1188K
[    1.259939] This architecture does not have kernel memory protection.
[    1.266520] Run /sbin/init as init process
[    1.415969] random: fast init done
[    2.355331] init: Console is alive
[    2.359237] init: - watchdog -
[    3.864135] kmodloader: loading kernel modules from /etc/modules-boot.d/*
[    4.090540] usbcore: registered new interface driver usbfs
[    4.096300] usbcore: registered new interface driver hub
[    4.101881] usbcore: registered new device driver usb
[    4.114127] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    4.122707] ehci-fsl: Freescale EHCI Host controller driver
[    4.130269] ehci-platform: EHCI generic platform driver
[    4.146043] phy phy-usbphy.0: remote usb device wakeup disabled
[    4.152110] phy phy-usbphy.0: UTMI 16bit 30MHz
[    4.156662] ehci-platform 101c0000.ehci: EHCI Host Controller
[    4.162576] ehci-platform 101c0000.ehci: new USB bus registered, assigned bus number 1
[    4.170820] ehci-platform 101c0000.ehci: irq 26, io mem 0x101c0000
[    4.181703] ehci-platform 101c0000.ehci: USB 2.0 started, EHCI 1.00
[    4.189149] hub 1-0:1.0: USB hub found
[    4.193551] hub 1-0:1.0: 1 port detected
[    4.204523] rtl8367b rtl8367rb: using MDIO bus 'mdio'
[    4.210701] rtl8367b rtl8367rb: RTL8367RB chip found
[    4.296615] usb 1-1: new high-speed USB device number 2 using ehci-platform
[    4.356861] hub 1-1:1.0: USB hub found
[    4.361252] hub 1-1:1.0: 4 ports detected
[    4.496892] usb 1-1.1: new high-speed USB device number 3 using ehci-platform
[    5.328087] libphy: rtl8367rb: probed
[    5.335506] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    5.343258] ohci-platform: OHCI generic platform driver
[    5.348946] ohci-platform 101c1000.ohci: Generic Platform OHCI controller
[    5.355970] ohci-platform 101c1000.ohci: new USB bus registered, assigned bus number 2
[    5.364191] ohci-platform 101c1000.ohci: irq 26, io mem 0x101c1000
[    5.394818] hub 2-0:1.0: USB hub found
[    5.399180] hub 2-0:1.0: 1 port detected
[    5.408763] kmodloader: done loading kernel modules from /etc/modules-boot.d/*
[    5.420666] init: - preinit -
[    6.685759] random: jshn: uninitialized urandom read (4 bytes read)
[    6.782987] random: jshn: uninitialized urandom read (4 bytes read)
[    7.047202] random: jshn: uninitialized urandom read (4 bytes read)
[    8.247068] mtk_soc_eth 10100000.ethernet eth0: port 5 link up (1000Mbps/Full duplex)
[    8.255936] 8021q: adding VLAN 0 to HW filter on device eth0
[    8.311904] urandom_read: 4 callbacks suppressed
[    8.311913] random: procd: uninitialized urandom read (4 bytes read)
[    8.876768] usb 1-1.2: new low-speed USB device number 4 using ehci-platform
[   10.084586] jffs2: notice: (554) jffs2_build_xattr_subsystem: complete building xattr subsystem, 48 of xdatum (30 unchecked, 18 orphan) and 60 of xref (10 dead, 11 orphan) found.
[   10.116068] mount_root: loading kmods from internal overlay
[   10.583306] kmodloader: loading kernel modules from /tmp/overlay/upper/etc/modules-boot.d/*
[   11.278270] SCSI subsystem initialized
[   11.347236] usb-storage 1-1.1:1.0: USB Mass Storage device detected
[   11.354194] scsi host0: usb-storage 1-1.1:1.0
[   11.359572] usbcore: registered new interface driver usb-storage
[   11.368170] kmodloader: done loading kernel modules from /tmp/overlay/upper/etc/modules-boot.d/*
[   11.795027] block: attempting to load /tmp/jffs_cfg/upper/etc/config/fstab
[   11.809168] block: extroot: device not present, retrying in 5 seconds
[   12.026967] scsi 0:0:0:0: Direct-Access     Generic  Flash Disk       8.07 PQ: 0 ANSI: 2
[   12.039466] sd 0:0:0:0: [sda] 7823360 512-byte logical blocks: (4.01 GB/3.73 GiB)
[   12.048315] sd 0:0:0:0: [sda] Write Protect is off
[   12.053507] sd 0:0:0:0: [sda] Mode Sense: 03 00 00 00
[   12.054092] sd 0:0:0:0: [sda] No Caching mode page found
[   12.059591] sd 0:0:0:0: [sda] Assuming drive cache: write through
[   16.729288] usb 1-1.2: USB disconnect, device number 4
[   23.636867] usb 1-1.1: reset high-speed USB device number 3 using ehci-platform
[   23.717701] sd 0:0:0:0: [sda] Attached SCSI removable disk
[   23.725423] sd 0:0:0:0: [sda] 7823360 512-byte logical blocks: (4.01 GB/3.73 GiB)
[   23.737201] random: crng init done
[   23.740937]  sda: sda1
[   23.749134] block: extroot: cannot find device with UUID 6bab48d9-8113-4fbc-8689-23a4d78be0e2
[   23.759292] mount_root: switching to jffs2 overlay
[   23.766972] overlayfs: upper fs does not support tmpfile.
[   23.777307] urandom-seed: Seeding with /etc/urandom.seed
[   23.899553] mtk_soc_eth 10100000.ethernet eth0: port 5 link down
[   23.930957] procd: - early -
[   23.934127] procd: - watchdog -
[   24.541390] procd: - watchdog -
[   24.546010] procd: - ubus -
[   24.626289] procd: - init -
[   25.800379] kmodloader: loading kernel modules from /etc/modules.d/*
[   26.055466] Loading modules backported from Linux version v5.10.68-0-g4d8524048a35
[   26.063284] Backport generated by backports.git v5.10.68-1-0-ga4f9ba32
[   26.133610] xt_time: kernel timezone is -0000
[   26.408985] PPP generic driver version 2.4.2
[   26.419614] urngd: jent-rng init failed, err: 2
[   26.425580] NET: Registered protocol family 24
[   26.462371] mt76x0e 0000:01:00.0: card - bus=0x1, slot = 0x0 irq=4
[   26.469023] mt76x0e 0000:01:00.0: ASIC revision: 76100002
[   26.476801] mt76x0e 0000:01:00.0: Firmware Version: 0.1.00
[   26.563860] mt76x0e 0000:01:00.0: EEPROM ver:02 fae:00
[   26.571927] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[   26.599434] rt2800_wmac 10180000.wmac: loaded eeprom from mtd device "radio"
[   26.606704] ieee80211 phy1: rt2x00_set_rt: Info - RT chipset 6352, rev 0500 detected
[   26.614776] ieee80211 phy1: rt2x00_set_rf: Info - RF chipset 7620 detected
[   26.622092] ieee80211 phy1: Selected rate control algorithm 'minstrel_ht'
[   26.630612] kmodloader: done loading kernel modules from /etc/modules.d/*
[   38.648048] mtk_soc_eth 10100000.ethernet eth0: port 5 link up (1000Mbps/Full duplex)
[   38.656612] 8021q: adding VLAN 0 to HW filter on device eth0
[   38.669466] br-lan: port 1(eth0.1) entered blocking state
[   38.675102] br-lan: port 1(eth0.1) entered disabled state
[   38.681228] device eth0.1 entered promiscuous mode
[   38.686192] device eth0 entered promiscuous mode
[   38.695005] br-lan: port 1(eth0.1) entered blocking state
[   38.700599] br-lan: port 1(eth0.1) entered forwarding state
[   39.664275] IPv6: ADDRCONF(NETDEV_CHANGE): br-lan: link becomes ready
[   46.449548] usb 1-1.1: reset high-speed USB device number 3 using ehci-platform
[   46.580224] sd 0:0:0:0: [sda] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x03 driverbyte=0x00
[   46.588648] sd 0:0:0:0: [sda] tag#0 CDB: opcode=0x28 28 00 00 00 01 00 00 00 08 00
[   46.596414] blk_update_request: I/O error, dev sda, sector 256 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
[   46.608232] sd 0:0:0:0: [sda] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
[   46.616655] sd 0:0:0:0: [sda] tag#0 Sense Key : 0x6 [current] 
[   46.622633] sd 0:0:0:0: [sda] tag#0 ASC=0x28 ASCQ=0x0 
[   46.627912] sd 0:0:0:0: [sda] tag#0 CDB: opcode=0x28 28 00 00 00 01 00 00 00 08 00
[   46.635669] blk_update_request: I/O error, dev sda, sector 256 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
[   46.645895] Buffer I/O error on dev sda, logical block 32, async page read
[   46.662195]  sda: sda1
[   57.565787] usb 1-1.1: reset high-speed USB device number 3 using ehci-platform
[   57.663957] sd 0:0:0:0: [sda] 7823360 512-byte logical blocks: (4.01 GB/3.73 GiB)
[   57.677054]  sda: sda1
[   74.459029] usb 1-1.1: reset high-speed USB device number 3 using ehci-platform
[   74.547101] sd 0:0:0:0: [sda] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x03 driverbyte=0x00
[   74.555527] sd 0:0:0:0: [sda] tag#0 CDB: opcode=0x28 28 00 00 77 5d 58 00 00 08 00
[   74.563299] blk_update_request: I/O error, dev sda, sector 7822680 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
[   74.590001] sd 0:0:0:0: [sda] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
[   74.598434] sd 0:0:0:0: [sda] tag#0 Sense Key : 0x6 [current] 
[   74.604413] sd 0:0:0:0: [sda] tag#0 ASC=0x28 ASCQ=0x0 
[   74.609691] sd 0:0:0:0: [sda] tag#0 CDB: opcode=0x28 28 00 00 77 5d 58 00 00 08 00
[   74.617445] blk_update_request: I/O error, dev sda, sector 7822680 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
[   74.628025] Buffer I/O error on dev sda, logical block 977835, async page read
[   74.643992]  sda: sda1
[   87.667847] usb 1-1.1: reset high-speed USB device number 3 using ehci-platform
[   87.766448] sd 0:0:0:0: [sda] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x03 driverbyte=0x00
[   87.774871] sd 0:0:0:0: [sda] tag#0 CDB: opcode=0x28 28 00 00 77 5f fa 00 00 01 00
[   87.782637] blk_update_request: I/O error, dev sda, sector 7823354 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
[   87.794724] sd 0:0:0:0: [sda] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
[   87.803139] sd 0:0:0:0: [sda] tag#0 Sense Key : 0x6 [current] 
[   87.809117] sd 0:0:0:0: [sda] tag#0 ASC=0x28 ASCQ=0x0 
[   87.814404] sd 0:0:0:0: [sda] tag#0 CDB: opcode=0x28 28 00 00 77 5f f8 00 00 01 00
[   87.822159] blk_update_request: I/O error, dev sda, sector 7823352 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
[   87.832737] Buffer I/O error on dev sda, logical block 977919, async page read
[   87.863265]  sda: sda1

lsusb

/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ohci-platform/1p, 12M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-platform/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=, Driver=hub/4p, 480M
        |__ Port 1: Dev 3, If 0, Class=, Driver=usb-storage, 480M