USB/Serial developers-
We were running some computer stress tests on our PR2 robot when
we noticed an oops from the USB/Serial driver. The stress tests
involve stressing the CPU, memory and networking (with a ping flood).
We're using Ubuntu Jaunty (9.04) and kernel version:
Linux version 2.6.33-29-realtime (root@lsd) (gcc version 4.4.3 (Ubuntu
4.4.3-4ubuntu5) ) #1 SMP PREEMPT RT Thu Oct 14 13:21:28 PDT 2010
The USB driver caused one of our processes, which was using the USB
interface, to crash because the serial port died. Stack trace is
below. Output from "lspci" and "lsusb -v" attached. Has anyone seen
this problem before? Thanks.
Kevin
Oct 20 11:38:39 pr1021 kernel: [ 2477.496077] ------------[ cut here
]------------
Oct 20 11:38:39 pr1021 kernel: [ 2477.496082] WARNING: at
drivers/usb/serial/usb-serial.
c:376 serial_write_room+0x84/0x90
[usbserial]()
Oct 20 11:38:39 pr1021 kernel: [ 2477.496084] Hardware name: To Be
Filled By O.E.M.
Oct 20 11:38:39 pr1021 kernel: [ 2477.496086] Modules linked in:
autofs4 binfmt_misc rfcomm sco bridge stp bnep l2cap blu
etooth power_meter acpi_pad video output nfsd exportfs nfs lockd
nfs_acl auth_rpcgss sunrpc xt_tcpudp iptable_filter ipt_
MASQUERADE ipt_NETMAP iptable_nat nf_nat nf_conntrack_ipv4
nf_conntrack nf_defrag_ipv4 iptable_mangle xt_MARK ip_tables x
_tables ipmi_si ipmi_devintf ipmi_msghandler lp parport snd_usb_audio
snd_pcm snd_timer cp210x snd_page_alloc psmouse usb
serial snd_hwdep iTCO_wdt iTCO_vendor_support snd_usb_lib pcspkr
serio_raw joydev snd_rawmidi snd_seq_device snd soundcor
e usbhid hid igb ahci e1000e dca
Oct 20 11:38:39 pr1021 kernel: [ 2477.496124] Pid: 214, comm:
irq/23-uhci_hcd Tainted: G W 2.6.33-29-realtime #1
Oct 20 11:38:39 pr1021 kernel: [ 2477.496127] Call Trace:
Oct 20 11:38:39 pr1021 kernel: [ 2477.496131] [<ffffffff8105f70b>]
warn_slowpath_common+0x7b/0xc0
Oct 20 11:38:39 pr1021 kernel: [ 2477.496135] [<ffffffff8105f764>]
warn_slowpath_null+0x14/0x20
Oct 20 11:38:39 pr1021 kernel: [ 2477.496140] [<ffffffffa0101834>]
serial_write_room+0x84/0x90 [usbserial]
Oct 20 11:38:39 pr1021 kernel: [ 2477.496144] [<ffffffff81330b6d>]
tty_write_room+0x1d/0x20
Oct 20 11:38:39 pr1021 kernel: [ 2477.496147] [<ffffffff8132e058>]
process_echoes+0x68/0x340
Oct 20 11:38:39 pr1021 kernel: [ 2477.496151] [<ffffffff815442ce>] ?
_mutex_unlock+0xe/0x10
Oct 20 11:38:39 pr1021 kernel: [ 2477.496155] [<ffffffff81330317>]
n_tty_receive_char+0x3d7/0x7d0
Oct 20 11:38:39 pr1021 kernel: [ 2477.496158] [<ffffffff813308fc>]
n_tty_receive_buf+0x1ec/0x420
Oct 20 11:38:39 pr1021 kernel: [ 2477.496162] [<ffffffff81056c2d>] ?
enqueue_task_fair+0x5d/0xa0
Oct 20 11:38:39 pr1021 kernel: [ 2477.496166] [<ffffffff81333598>]
flush_to_ldisc+0x178/0x1a0
Oct 20 11:38:39 pr1021 kernel: [ 2477.496170] [<ffffffff8133360e>]
tty_flip_buffer_push+0x4e/0x60
Oct 20 11:38:39 pr1021 kernel: [ 2477.496176] [<ffffffffa0104c97>]
flush_and_resubmit_read_urb+0x107/0x130 [usbserial]
Oct 20 11:38:39 pr1021 kernel: [ 2477.496182] [<ffffffffa0105528>]
usb_serial_generic_read_bulk_callback+0xa8/0x170 [usb
serial]
Oct 20 11:38:39 pr1021 kernel: [ 2477.496187] [<ffffffff813c9995>]
usb_hcd_giveback_urb+0x65/0xf0
Oct 20 11:38:39 pr1021 kernel: [ 2477.496191] [<ffffffff813ea818>]
uhci_giveback_urb+0xb8/0x260
Oct 20 11:38:39 pr1021 kernel: [ 2477.496194] [<ffffffff813eacf7>]
uhci_scan_qh+0x257/0x480
Oct 20 11:38:39 pr1021 kernel: [ 2477.496198] [<ffffffff813eb11d>]
uhci_scan_schedule+0x18d/0x2f0
Oct 20 11:38:39 pr1021 kernel: [ 2477.496202] [<ffffffff813ed1af>]
uhci_irq+0x7f/0x180
Oct 20 11:38:39 pr1021 kernel: [ 2477.496205] [<ffffffff813c91c8>]
usb_hcd_irq+0x38/0x80
Oct 20 11:38:39 pr1021 kernel: [ 2477.496209] [<ffffffff810c13a1>]
irq_thread+0x161/0x220
Oct 20 11:38:39 pr1021 kernel: [ 2477.496213] [<ffffffff810c1240>] ?
irq_thread+0x0/0x220
Oct 20 11:38:39 pr1021 kernel: [ 2477.496217] [<ffffffff810c1240>] ?
irq_thread+0x0/0x220
Oct 20 11:38:39 pr1021 kernel: [ 2477.496220] [<ffffffff81080e86>]
kthread+0x96/0xa0
Oct 20 11:38:39 pr1021 kernel: [ 2477.496224] [<ffffffff8100c024>]
kernel_thread_helper+0x4/0x10
Oct 20 11:38:39 pr1021 kernel: [ 2477.496228] [<ffffffff81080df0>] ?
kthread+0x0/0xa0
Oct 20 11:38:39 pr1021 kernel: [ 2477.496231] [<ffffffff8100c020>] ?
kernel_thread_helper+0x0/0x10
Oct 20 11:38:39 pr1021 kernel: [ 2477.496234] ---[ end trace
9a3c72936784c794 ]---
Oct 20 11:38:39 pr1021 kernel: [ 2477.496235] ------------[ cut here
]------------
00:00.0 Host bridge: Intel Corporation 5500 I/O Hub to ESI Port (rev 13)
Subsystem: QUANTA Computer Inc Device 8967
Flags: fast devsel
Capabilities: <access denied>
00:01.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 1 (rev 13)
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 0000b000-0000bfff
Memory behind bridge: df400000-df4fffff
Capabilities: <access denied>
Kernel driver in use: pcieport-driver
Kernel modules: shpchp
00:03.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 3 (rev 13)
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
Capabilities: <access denied>
Kernel driver in use: pcieport-driver
Kernel modules: shpchp
00:07.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 7 (rev 13)
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=03, subordinate=06, sec-latency=0
I/O behind bridge: 0000c000-0000dfff
Memory behind bridge: df500000-df6fffff
Capabilities: <access denied>
Kernel driver in use: pcieport-driver
Kernel modules: shpchp
00:13.0 PIC: Intel Corporation 5520/5500/X58 I/O Hub I/OxAPIC Interrupt Controller (rev 13) (prog-if 20)
Flags: bus master, fast devsel, latency 0
Memory at fec8a000 (32-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
00:14.0 PIC: Intel Corporation 5520/5500/X58 I/O Hub System Management Registers (rev 13)
Flags: fast devsel
Capabilities: <access denied>
00:14.1 PIC: Intel Corporation 5520/5500/X58 I/O Hub GPIO and Scratch Pad Registers (rev 13)
Flags: fast devsel
Capabilities: <access denied>
00:14.2 PIC: Intel Corporation 5520/5500/X58 I/O Hub Control Status and RAS Registers (rev 13)
Flags: fast devsel
Capabilities: <access denied>
00:14.3 PIC: Intel Corporation 5520/5500/X58 I/O Hub Throttle Registers (rev 13)
Flags: fast devsel
00:1a.0 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #4
Subsystem: QUANTA Computer Inc Device 8967
Flags: bus master, medium devsel, latency 0, IRQ 23
I/O ports at ac00 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd
00:1a.1 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #5
Subsystem: QUANTA Computer Inc Device 8967
Flags: bus master, medium devsel, latency 0, IRQ 22
I/O ports at a880 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd
00:1a.2 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #6
Subsystem: QUANTA Computer Inc Device 8967
Flags: bus master, medium devsel, latency 0, IRQ 21
I/O ports at a800 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd
00:1a.7 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #2 (prog-if 20)
Subsystem: QUANTA Computer Inc Device 8967
Flags: bus master, medium devsel, latency 0, IRQ 20
Memory at df3de000 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci_hcd
00:1d.0 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #1
Subsystem: QUANTA Computer Inc Device 8967
Flags: bus master, medium devsel, latency 0, IRQ 23
I/O ports at a480 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd
00:1d.1 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #2
Subsystem: QUANTA Computer Inc Device 8967
Flags: bus master, medium devsel, latency 0, IRQ 22
I/O ports at a400 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd
00:1d.2 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #3
Subsystem: QUANTA Computer Inc Device 8967
Flags: bus master, medium devsel, latency 0, IRQ 21
I/O ports at a080 [size=32]
Capabilities: <access denied>
Kernel driver in use: uhci_hcd
00:1d.7 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #1 (prog-if 20)
Subsystem: QUANTA Computer Inc Device 8967
Flags: bus master, medium devsel, latency 0, IRQ 23
Memory at df3dc000 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci_hcd
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 90) (prog-if 01)
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=07, subordinate=07, sec-latency=32
I/O behind bridge: 0000e000-0000efff
Memory behind bridge: df700000-dfffffff
Capabilities: <access denied>
00:1f.0 ISA bridge: Intel Corporation 82801JIR (ICH10R) LPC Interface Controller
Subsystem: QUANTA Computer Inc Device 8967
Flags: bus master, medium devsel, latency 0
Capabilities: <access denied>
Kernel modules: iTCO_wdt
00:1f.2 SATA controller: Intel Corporation 82801JI (ICH10 Family) SATA AHCI Controller (prog-if 01)
Subsystem: QUANTA Computer Inc Device 8967
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 53
I/O ports at a000 [size=8]
I/O ports at 9c00 [size=4]
I/O ports at 9880 [size=8]
I/O ports at 9800 [size=4]
I/O ports at 9480 [size=32]
Memory at df3da000 (32-bit, non-prefetchable) [size=2K]
Capabilities: <access denied>
Kernel driver in use: ahci
00:1f.3 SMBus: Intel Corporation 82801JI (ICH10 Family) SMBus Controller
Subsystem: QUANTA Computer Inc Device 8967
Flags: medium devsel, IRQ 11
Memory at df3d8000 (64-bit, non-prefetchable) [size=256]
I/O ports at 0400 [size=32]
Kernel modules: i2c-i801
01:00.0 Ethernet controller: Intel Corporation 82575EB Gigabit Network Connection (rev 02)
Subsystem: QUANTA Computer Inc Device 8967
Flags: bus master, fast devsel, latency 0, IRQ 28
Memory at df4e0000 (32-bit, non-prefetchable) [size=128K]
Memory at df4c0000 (32-bit, non-prefetchable) [size=128K]
I/O ports at bc00 [size=32]
Memory at df4bc000 (32-bit, non-prefetchable) [size=16K]
Expansion ROM at df480000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: igb
Kernel modules: igb
01:00.1 Ethernet controller: Intel Corporation 82575EB Gigabit Network Connection (rev 02)
Subsystem: QUANTA Computer Inc Device 8967
Flags: bus master, fast devsel, latency 0, IRQ 40
Memory at df460000 (32-bit, non-prefetchable) [size=128K]
Memory at df440000 (32-bit, non-prefetchable) [size=128K]
I/O ports at b880 [size=32]
Memory at df43c000 (32-bit, non-prefetchable) [size=16K]
Expansion ROM at df400000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: igb
Kernel modules: igb
03:00.0 PCI bridge: Integrated Device Technology, Inc. PES12N3A PCI Express Switch (rev 0e)
Flags: bus master, fast devsel, latency 0
Bus: primary=03, secondary=04, subordinate=06, sec-latency=0
I/O behind bridge: 0000c000-0000dfff
Memory behind bridge: df500000-df6fffff
Capabilities: <access denied>
Kernel modules: shpchp
04:02.0 PCI bridge: Integrated Device Technology, Inc. PES12N3A PCI Express Switch (rev 0e)
Flags: bus master, fast devsel, latency 0
Bus: primary=04, secondary=05, subordinate=05, sec-latency=0
I/O behind bridge: 0000c000-0000cfff
Memory behind bridge: df500000-df5fffff
Capabilities: <access denied>
Kernel modules: shpchp
04:04.0 PCI bridge: Integrated Device Technology, Inc. PES12N3A PCI Express Switch (rev 0e)
Flags: bus master, fast devsel, latency 0
Bus: primary=04, secondary=06, subordinate=06, sec-latency=0
I/O behind bridge: 0000d000-0000dfff
Memory behind bridge: df600000-df6fffff
Capabilities: <access denied>
Kernel modules: shpchp
05:00.0 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet Controller (Copper) (rev 06)
Subsystem: Intel Corporation 82571EB Gigabit Ethernet Controller (Copper)
Flags: bus master, fast devsel, latency 0, IRQ 54
Memory at df5e0000 (32-bit, non-prefetchable) [size=128K]
Memory at df5c0000 (32-bit, non-prefetchable) [size=128K]
I/O ports at cc00 [size=32]
Expansion ROM at df5a0000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: e1000e
Kernel modules: e1000e
05:00.1 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet Controller (Copper) (rev 06)
Subsystem: Intel Corporation 82571EB Gigabit Ethernet Controller (Copper)
Flags: bus master, fast devsel, latency 0, IRQ 64
Memory at df580000 (32-bit, non-prefetchable) [size=128K]
Memory at df560000 (32-bit, non-prefetchable) [size=128K]
I/O ports at c880 [size=32]
Expansion ROM at df540000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: e1000e
Kernel modules: e1000e
06:00.0 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet Controller (Copper) (rev 06)
Subsystem: Intel Corporation 82571EB Gigabit Ethernet Controller (Copper)
Flags: bus master, fast devsel, latency 0, IRQ 74
Memory at df6e0000 (32-bit, non-prefetchable) [size=128K]
Memory at df6c0000 (32-bit, non-prefetchable) [size=128K]
I/O ports at dc00 [size=32]
Expansion ROM at df6a0000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: e1000e
Kernel modules: e1000e
06:00.1 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet Controller (Copper) (rev 06)
Subsystem: Intel Corporation 82571EB Gigabit Ethernet Controller (Copper)
Flags: bus master, fast devsel, latency 0, IRQ 75
Memory at df680000 (32-bit, non-prefetchable) [size=128K]
Memory at df660000 (32-bit, non-prefetchable) [size=128K]
I/O ports at d880 [size=32]
Expansion ROM at df640000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: e1000e
Kernel modules: e1000e
07:0b.0 VGA compatible controller: ASPEED Technology, Inc. ASPEED Graphics Family (rev 10)
Subsystem: QUANTA Computer Inc Device 8967
Flags: medium devsel, IRQ 10
Memory at df800000 (32-bit, non-prefetchable) [size=8M]
Memory at df7e0000 (32-bit, non-prefetchable) [size=128K]
I/O ports at ec00 [size=128]
Capabilities: <access denied>
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0001 1.1 root hub
bcdDevice 2.06
iManufacturer 3 Linux 2.6.31-10-rt uhci_hcd
iProduct 2 UHCI Host Controller
iSerial 1 0000:00:1a.1
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0002 1x 2 bytes
bInterval 255
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 2
wHubCharacteristic 0x000a
No power switching (usb 1.0)
Per-port overcurrent protection
bPwrOn2PwrGood 1 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00
PortPwrCtrlMask 0xff
Hub Port Status:
Port 1: 0000.0100 power
Port 2: 0000.0100 power
Device Status: 0x0003
Self Powered
Remote Wakeup Enabled
Bus 002 Device 007: ID 148f:2770 Ralink Technology, Corp.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x148f Ralink Technology, Corp.
idProduct 0x2770
bcdDevice 1.01
iManufacturer 1 Ralink
iProduct 2 802.11 n WLAN
iSerial 3 1.0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 53
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 450mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 5
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 255 Vendor Specific Subclass
bInterfaceProtocol 255 Vendor Specific Protocol
iInterface 5 1.0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0000
(Bus Powered)
Bus 002 Device 008: ID 148f:2770 Ralink Technology, Corp.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x148f Ralink Technology, Corp.
idProduct 0x2770
bcdDevice 1.01
iManufacturer 1 Ralink
iProduct 2 802.11 n WLAN
iSerial 3 1.0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 53
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 450mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 5
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 255 Vendor Specific Subclass
bInterfaceProtocol 255 Vendor Specific Protocol
iInterface 5 1.0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0000
(Bus Powered)
Bus 002 Device 006: ID 0408:0003 Quanta Computer, Inc.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x0408 Quanta Computer, Inc.
idProduct 0x0003
bcdDevice 0.00
iManufacturer 25 Virtual
iProduct 42 HID-Media
iSerial 101 0123456789.0123456789.0123456789
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 84
bNumInterfaces 3
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 1 Keyboard
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.10
bCountryCode 33 US
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 65
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 4
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 2 Mouse
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.10
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 50
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 4
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 2 Mouse
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.10
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 68
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 4
Device Status: 0x0001
Self Powered
Bus 002 Device 005: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 1 Single TT
bMaxPacketSize0 64
idVendor 0x05e3 Genesys Logic, Inc.
idProduct 0x0608 USB-2.0 4-Port HUB
bcdDevice 9.01
iManufacturer 0
iProduct 1 USB2.0 Hub
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0001 1x 1 bytes
bInterval 12
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 4
wHubCharacteristic 0x00e0
Ganged power switching
Ganged overcurrent protection
TT think time 32 FS bits
Port indicators
bPwrOn2PwrGood 50 * 2 milli seconds
bHubContrCurrent 100 milli Ampere
DeviceRemovable 0x00
PortPwrCtrlMask 0xff
Hub Port Status:
Port 1: 0000.0503 highspeed power enable connect
Port 2: 0000.0100 power
Port 3: 0000.0100 power
Port 4: 0000.0503 highspeed power enable connect
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0001
Self Powered
Bus 002 Device 004: ID 0408:0907 Quanta Computer, Inc.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 1 Single TT
bMaxPacketSize0 64
idVendor 0x0408 Quanta Computer, Inc.
idProduct 0x0907
bcdDevice 1.00
iManufacturer 1 VIRTUAL
iProduct 2 Hub
iSerial 3 00238BDFE0F0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 4 Self-powered
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 2mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 5 7-port Hub
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0001 1x 1 bytes
bInterval 12
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 7
wHubCharacteristic 0x0069
Per-port power switching
Per-port overcurrent protection
TT think time 32 FS bits
bPwrOn2PwrGood 50 * 2 milli seconds
bHubContrCurrent 100 milli Ampere
DeviceRemovable 0x00
PortPwrCtrlMask 0xff
Hub Port Status:
Port 1: 0000.0503 highspeed power enable connect
Port 2: 0000.0100 power
Port 3: 0000.0100 power
Port 4: 0000.0100 power
Port 5: 0000.0100 power
Port 6: 0000.0100 power
Port 7: 0000.0100 power
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0003
Self Powered
Remote Wakeup Enabled
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0002 2.0 root hub
bcdDevice 2.06
iManufacturer 3 Linux 2.6.31-10-rt ehci_hcd
iProduct 2 EHCI Host Controller
iSerial 1 0000:00:1d.7
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 12
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 6
wHubCharacteristic 0x000a
No power switching (usb 1.0)
Per-port overcurrent protection
bPwrOn2PwrGood 10 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00
PortPwrCtrlMask 0xff
Hub Port Status:
Port 1: 0000.0100 power
Port 2: 0000.0100 power
Port 3: 0000.0503 highspeed power enable connect
Port 4: 0000.0503 highspeed power enable connect
Port 5: 0000.0100 power
Port 6: 0000.0100 power
Device Status: 0x0003
Self Powered
Remote Wakeup Enabled
Bus 006 Device 003: ID 10c4:ea60 Cygnal Integrated Products, Inc. CP210x Composite Device
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x10c4 Cygnal Integrated Products, Inc.
idProduct 0xea60 CP210x Composite Device
bcdDevice 1.00
iManufacturer 1 Silicon Labs
iProduct 2 Inertia-Link 4200
iSerial 3 4200-3092
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 2 Inertia-Link 4200
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Device Status: 0x0000
(Bus Powered)
Bus 006 Device 002: ID 046d:0a04 Logitech, Inc. V20 portable speakers (USB powered)
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x046d Logitech, Inc.
idProduct 0x0a04 V20 portable speakers (USB powered)
bcdDevice 0.07
iManufacturer 1 Logitech
iProduct 2 Logitech USB Speaker
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 233
bNumInterfaces 3
bConfigurationValue 1
iConfiguration 3 G6 2005/03/29 10:05
bmAttributes 0xc0
Self Powered
MaxPower 500mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 0
iInterface 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 43
bInCollection 1
baInterfaceNr( 0) 1
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 12
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 1
bSourceID 12
bControlSize 2
bmaControls( 0) 0x55
bmaControls( 0) 0x01
Mute
Bass
Treble
Automatic Gain
Bass Boost
bmaControls( 1) 0x02
bmaControls( 1) 0x00
Volume
bmaControls( 2) 0x02
bmaControls( 2) 0x00
Volume
iFeature 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 20
wTerminalType 0x0301 Speaker
bAssocTerminal 0
bSourceID 1
iTerminal 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 12
bDelay 0 frames
wFormatTag 1 PCM
AudioStreaming Interface Descriptor:
bLength 14
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 1
bSubframeSize 2
bBitResolution 16
bSamFreqType 0 Continuous
tLowerSamFreq 6400
tUpperSamFreq 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 9
Transfer Type Isochronous
Synch Type Adaptive
Usage Type Data
wMaxPacketSize 0x0064 1x 100 bytes
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 2 Decoded PCM samples
wLockDelay 1 Decoded PCM samples
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 2
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 12
bDelay 0 frames
wFormatTag 1 PCM
AudioStreaming Interface Descriptor:
bLength 14
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 0 Continuous
tLowerSamFreq 6400
tUpperSamFreq 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 9
Transfer Type Isochronous
Synch Type Adaptive
Usage Type Data
wMaxPacketSize 0x00c8 1x 200 bytes
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 2 Decoded PCM samples
wLockDelay 1 Decoded PCM samples
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 3
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 12
bDelay 0 frames
wFormatTag 1 PCM
AudioStreaming Interface Descriptor:
bLength 14
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 3
bBitResolution 24
bSamFreqType 0 Continuous
tLowerSamFreq 6400
tUpperSamFreq 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 9
Transfer Type Isochronous
Synch Type Adaptive
Usage Type Data
wMaxPacketSize 0x012c 1x 300 bytes
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 2 Decoded PCM samples
wLockDelay 1 Decoded PCM samples
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 0 No Subclass
bInterfaceProtocol 0 None
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.00
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 39
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0002 1x 2 bytes
bInterval 8
Device Status: 0x0000
(Bus Powered)
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0001 1.1 root hub
bcdDevice 2.06
iManufacturer 3 Linux 2.6.31-10-rt uhci_hcd
iProduct 2 UHCI Host Controller
iSerial 1 0000:00:1d.0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0002 1x 2 bytes
bInterval 255
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 2
wHubCharacteristic 0x000a
No power switching (usb 1.0)
Per-port overcurrent protection
bPwrOn2PwrGood 1 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00
PortPwrCtrlMask 0xff
Hub Port Status:
Port 1: 0000.0103 power enable connect
Port 2: 0000.0103 power enable connect
Device Status: 0x0003
Self Powered
Remote Wakeup Enabled
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0001 1.1 root hub
bcdDevice 2.06
iManufacturer 3 Linux 2.6.31-10-rt uhci_hcd
iProduct 2 UHCI Host Controller
iSerial 1 0000:00:1a.0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0002 1x 2 bytes
bInterval 255
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 2
wHubCharacteristic 0x000a
No power switching (usb 1.0)
Per-port overcurrent protection
bPwrOn2PwrGood 1 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00
PortPwrCtrlMask 0xff
Hub Port Status:
Port 1: 0000.0100 power
Port 2: 0000.0100 power
Device Status: 0x0003
Self Powered
Remote Wakeup Enabled
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0001 1.1 root hub
bcdDevice 2.06
iManufacturer 3 Linux 2.6.31-10-rt uhci_hcd
iProduct 2 UHCI Host Controller
iSerial 1 0000:00:1d.2
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0002 1x 2 bytes
bInterval 255
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 2
wHubCharacteristic 0x000a
No power switching (usb 1.0)
Per-port overcurrent protection
bPwrOn2PwrGood 1 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00
PortPwrCtrlMask 0xff
Hub Port Status:
Port 1: 0000.0100 power
Port 2: 0000.0100 power
Device Status: 0x0003
Self Powered
Remote Wakeup Enabled
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0001 1.1 root hub
bcdDevice 2.06
iManufacturer 3 Linux 2.6.31-10-rt uhci_hcd
iProduct 2 UHCI Host Controller
iSerial 1 0000:00:1a.2
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0002 1x 2 bytes
bInterval 255
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 2
wHubCharacteristic 0x000a
No power switching (usb 1.0)
Per-port overcurrent protection
bPwrOn2PwrGood 1 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00
PortPwrCtrlMask 0xff
Hub Port Status:
Port 1: 0000.0100 power
Port 2: 0000.0100 power
Device Status: 0x0003
Self Powered
Remote Wakeup Enabled
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0002 2.0 root hub
bcdDevice 2.06
iManufacturer 3 Linux 2.6.31-10-rt ehci_hcd
iProduct 2 EHCI Host Controller
iSerial 1 0000:00:1a.7
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 12
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 6
wHubCharacteristic 0x000a
No power switching (usb 1.0)
Per-port overcurrent protection
bPwrOn2PwrGood 10 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00
PortPwrCtrlMask 0xff
Hub Port Status:
Port 1: 0000.0100 power
Port 2: 0000.0100 power
Port 3: 0000.0100 power
Port 4: 0000.0100 power
Port 5: 0000.0100 power
Port 6: 0000.0100 power
Device Status: 0x0003
Self Powered
Remote Wakeup Enabled
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0001 1.1 root hub
bcdDevice 2.06
iManufacturer 3 Linux 2.6.31-10-rt uhci_hcd
iProduct 2 UHCI Host Controller
iSerial 1 0000:00:1d.1
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0002 1x 2 bytes
bInterval 255
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 2
wHubCharacteristic 0x000a
No power switching (usb 1.0)
Per-port overcurrent protection
bPwrOn2PwrGood 1 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00
PortPwrCtrlMask 0xff
Hub Port Status:
Port 1: 0000.0100 power
Port 2: 0000.0100 power
Device Status: 0x0003
Self Powered
Remote Wakeup Enabled
