[linux-dvb] kernel crash with Terratec Cinergy XS

Christian Hoffmann email at christianhoffmann.info
Sat Dec 8 12:34:06 CET 2007


Hi all,

I was able to get a vmcore after the crash with kexec.

Here is the bt and lastlog.
Anything else I could provide?

Chris


PID: 0      TASK: ffffffff804b7870  CPU: 0   COMMAND: "swapper"
 #0 [ffffffff80624b10] machine_kexec at ffffffff8021c00d
 #1 [ffffffff80624bc0] crash_kexec at ffffffff80255dbe
 #2 [ffffffff80624c80] do_page_fault at ffffffff803fde21
 #3 [ffffffff80624d90] error_exit at ffffffff803fc0fd
    [exception RIP: end_unlink_async+34]
    RIP: ffffffff8811d20a  RSP: ffffffff80624e48  RFLAGS: 00010202
    RAX: 0000000000010029  RBX: ffff81007e098178  RCX: 0000000000000000
    RDX: 0000000000008028  RSI: ffffffff8811fe7e  RDI: 0000000000000080
    RBP: 0000000000000000   R8: 0000000000000000   R9: ffffffff8047dc64
    R10: ffff8100022ffc48  R11: 0000000000000246  R12: 0000000000000000
    R13: ffff81007e098178  R14: ffff81007e098000  R15: 0000000000000000
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
 #4 [ffffffff80624e60] ehci_work at ffffffff8811d78b
 #5 [ffffffff80624ed0] ehci_irq at ffffffff88120d0f
 #6 [ffffffff80624f20] usb_hcd_irq at ffffffff880ded82
 #7 [ffffffff80624f30] handle_IRQ_event at ffffffff802603e8
 #8 [ffffffff80624f60] handle_fasteoi_irq at ffffffff802618b6
 #9 [ffffffff80624f90] do_IRQ at ffffffff8020c136
--- <IRQ stack> ---
#10 [ffffffff805c7e88] ret_from_intr at ffffffff8020a141
    [exception RIP: acpi_safe_halt+40]
    RIP: ffffffff88003dc6  RSP: ffffffff805c7f30  RFLAGS: 00000246
    RAX: 0000000000000000  RBX: ffff81007e6760a8  RCX: ffffffff8047dde4
    RDX: 0000000000000007  RSI: 00000000000001c6  RDI: 0000000004000000
    RBP: 0000000000000000   R8: 0000000000000002   R9: ffffffff8047dc64
    R10: ffff8100022ffc48  R11: 0000000000000246  R12: ffffffff805c7f14
    R13: 0000000000001001  R14: ffffffff80332334  R15: 0000000000000000
    ORIG_RAX: ffffffffffffff86  CS: 0010  SS: 0018
#11 [ffffffff805c7f30] acpi_processor_idle at ffffffff88003ff9
#12 [ffffffff805c7f70] cpu_idle at ffffffff80208daf
crash>

...
DIGITAL TV REQUEST
DIGITAL TV REQUEST
DIGITAL TV REQUEST
DIGITAL TV REQUEST
Unable to handle kernel NULL pointer dereference at 0000000000000088 RIP:
 [<ffffffff8811d20a>] :ehci_hcd:end_unlink_async+0x22/0xed
PGD 46866067 PUD 46867067 PMD 0
Oops: 0002 [1] SMP
last sysfs file: /devices/pci0000:00/0000:00:14.4/0000:06:02.0/rf_kill
CPU 0
Modules linked in: qt1010 mt2060 mt352 zl10353 em2880_dvb dvb_core 
em28xx_audio xc3028_tuner tvp5150 tuner em28xx compat_ioctl32 ir_common 
videodev v4l2_common v4l1_compat tveeprom appletalk ax25 ipx p8023 eeprom 
ircomm_tty ircomm iptable_filter ip_tables ip6_tables x_tables snd_pcm_oss 
snd_mixer_oss snd_seq snd_seq_device af_packet cpufreq_conservative 
cpufreq_userspace cpufreq_powersave powernow_k8 fuse apparmor loop dm_mod 
pcmcia ipw2200 ide_cd tifm_7xx1 tifm_core ieee80211 ieee80211_crypt 
firmware_class ohci1394 container dock battery ac yenta_socket rtc_cmos 
ieee1394 cdrom snd_atiixp rsrc_nonstatic rtc_core i2c_piix4 snd_atiixp_modem 
rtc_lib snd_ac97_codec ac97_bus button pcmcia_core snd_pcm snd_timer tg3 snd 
parport_pc fglrx(P) parport soundcore k8temp hwmon serio_raw joydev 
snd_page_alloc irda crc_ccitt ehci_hcd ide_disk ohci_hcd usbcore radeonfb 
fb_ddc i2c_algo_bit i2c_core edd ext3 mbcache jbd fan atiixp ide_core thermal 
processor
Pid: 0, comm: swapper Tainted: P      N 2.6.22.13-0.3-default #1
RIP: 0010:[<ffffffff8811d20a>]  
[<ffffffff8811d20a>] :ehci_hcd:end_unlink_async+0x22/0xed
RSP: 0018:ffffffff80624e48  EFLAGS: 00010202
RAX: 0000000000010029 RBX: ffff81007e098178 RCX: 0000000000000000
RDX: 0000000000008028 RSI: ffffffff8811fe7e RDI: 0000000000000080
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8047dc64
R10: ffff8100022ffc48 R11: 0000000000000246 R12: 0000000000000000
R13: ffff81007e098178 R14: ffff81007e098000 R15: 0000000000000000
FS:  0000000040800950(0000) GS:ffffffff80500000(0000) knlGS:00000000f7e6e6c0
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 0000000000000088 CR3: 0000000046865000 CR4: 00000000000006e0
Process swapper (pid: 0, threadinfo ffffffff805c6000, task ffffffff804b7870)
Stack:  ffff81007e098000 ffff81007e098178 0000000000000000 ffffffff8811d78b
 ffff81007e143120 ffff81007e7bc240 0000024100000800 0000000000000120
 0000000000000240 0000000180617800 0000024100000001 ffff81007e098000
Call Trace:
 <IRQ>  [<ffffffff8811d78b>] :ehci_hcd:ehci_work+0x25/0x6bd
 [<ffffffff88120d0f>] :ehci_hcd:ehci_irq+0x15a/0x188
 [<ffffffff880ded82>] :usbcore:usb_hcd_irq+0x24/0x52
 [<ffffffff802603e8>] handle_IRQ_event+0x25/0x53
 [<ffffffff802618b6>] handle_fasteoi_irq+0x94/0xd0
 [<ffffffff80208ce4>] default_idle+0x0/0x3d
 [<ffffffff8020c136>] do_IRQ+0x6c/0xd6
 [<ffffffff88003e4d>] :processor:acpi_processor_idle+0x0/0x48b
 [<ffffffff8020a141>] ret_from_intr+0x0/0xa
 <EOI>  [<ffffffff88003dc6>] :processor:acpi_safe_halt+0x28/0x39
 [<ffffffff88003ff9>] :processor:acpi_processor_idle+0x1ac/0x48b
 [<ffffffff88003e4d>] :processor:acpi_processor_idle+0x0/0x48b
 [<ffffffff80208ce4>] default_idle+0x0/0x3d
 [<ffffffff80208daf>] cpu_idle+0x8e/0xb1
 [<ffffffff805d077b>] start_kernel+0x2cf/0x2db
 [<ffffffff805d0148>] _sinittext+0x148/0x14c


Code: c6 85 88 00 00 00 03 48 c7 45 50 00 00 00 00 e8 a8 95 1d f8
RIP  [<ffffffff8811d20a>] :ehci_hcd:end_unlink_async+0x22/0xed
 RSP <ffffffff80624e48>
crash>

>On Thursday 06 December 2007 23:00:05 you wrote:
> Hi all,
>
> I recently bought a Terratec Cinergy XS in France.
>
> I tried driver from http://mcentral.de/hg/~mrec/v4l-dvb-experimental
> and followed instructions from here
>
> http://www.techjp.net/suse_103_terratec_cartetv_tnt
>
> I modprobed with and without em28xx device_mode=17.
>
> Scanning in kaffeine starts, but after a while (around 30%) the system
> locks up and the kernel crashes. I use opensuse kernel
> 2.6.22.13-0.3-default.
>
> I tried different Firmware, e.g. from here
> http://www.techjp.net/UserFile/File/articles/OpenSuse103/firmware.tgz.
>
> Any idea what could go wrong or how I could provide more info e.g. kernel
> stack trace?
>
> Chris
>
> -------------------------
>
> Linux video capture interface: v2.00
> em28xx v4l2 driver version 0.0.1 loaded
> em28xx new video device (0ccd:005e): interface 0, class 255
> em28xx: device is attached to a USB 2.0 bus
> em28xx: you're using the experimental/unstable tree from mcentral.de
> em28xx: there's also a stable tree available but which is limited to
> em28xx: linux <=2.6.19.2
> em28xx: it's fine to use this driver but keep in mind that it will move
> em28xx: to http://mcentral.de/hg/~mrec/v4l-dvb-kernel as soon as it's
> em28xx: proved to be stable
> em28xx #0: Alternate settings: 8
> em28xx #0: Alternate setting 0, max size= 0
> em28xx #0: Alternate setting 1, max size= 0
> em28xx #0: Alternate setting 2, max size= 1448
> em28xx #0: Alternate setting 3, max size= 2048
> em28xx #0: Alternate setting 4, max size= 2304
> em28xx #0: Alternate setting 5, max size= 2580
> em28xx #0: Alternate setting 6, max size= 2892
> em28xx #0: Alternate setting 7, max size= 3072
> input: em2880/em2870 remote control as /class/input/input7
> em28xx-input.c: remote control handler attached
> attach_inform: eeprom detected.
> em28xx #0: i2c eeprom 00: 1a eb 67 95 cd 0c 5e 00 d0 12 5c 03 9e 40 de 1c
> em28xx #0: i2c eeprom 10: 6a 34 27 57 46 07 01 00 00 00 00 00 00 00 00 00
> em28xx #0: i2c eeprom 20: 46 00 01 00 f0 10 31 00 b8 00 14 00 5b 1e 00 00
> em28xx #0: i2c eeprom 30: 00 00 20 40 20 6e 02 20 10 01 00 00 00 00 00 00
> em28xx #0: i2c eeprom 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> em28xx #0: i2c eeprom 50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> em28xx #0: i2c eeprom 60: 00 00 00 00 00 00 00 00 00 00 34 03 54 00 65 00
> em28xx #0: i2c eeprom 70: 72 00 72 00 61 00 54 00 65 00 63 00 20 00 45 00
> em28xx #0: i2c eeprom 80: 6c 00 65 00 63 00 74 00 72 00 6f 00 6e 00 69 00
> em28xx #0: i2c eeprom 90: 63 00 20 00 47 00 6d 00 62 00 48 00 00 00 40 03
> em28xx #0: i2c eeprom a0: 43 00 69 00 6e 00 65 00 72 00 67 00 79 00 20 00
> em28xx #0: i2c eeprom b0: 48 00 79 00 62 00 72 00 69 00 64 00 20 00 54 00
> em28xx #0: i2c eeprom c0: 20 00 55 00 53 00 42 00 20 00 58 00 53 00 20 00
> em28xx #0: i2c eeprom d0: 28 00 32 00 38 00 38 00 32 00 29 00 00 00 1c 03
> em28xx #0: i2c eeprom e0: 30 00 37 00 30 00 38 00 30 00 32 00 30 00 30 00
> em28xx #0: i2c eeprom f0: 33 00 38 00 34 00 33 00 00 00 00 00 00 00 00 00
> EEPROM ID= 0x9567eb1a
> Vendor/Product ID= 0ccd:005e
> AC97 audio (5 sample rates)
> 500mA max power
> Table at 0x27, strings=0x409e, 0x1cde, 0x346a
> tuner 1-0061: chip found @ 0xc2 (em28xx #0)
> attach inform (default): detected I2C address c2
> /home/christian/v4l-dvb-experimental/v4l/tuner-core.c: setting tuner
> callback tuner 0x61: Configuration acknowledged
> /home/christian/v4l-dvb-experimental/v4l/tuner-core.c: setting tuner
> callback /home/christian/v4l-dvb-experimental/v4l/xc3028-tuner.c: attach
> request! /home/christian/v4l-dvb-experimental/v4l/tuner-core.c: xc3028
> tuner successfully loaded
> attach_inform: tvp5150 detected.
> tvp5150 1-005c: tvp5150am1 detected.
> Loading base firmware: xc3028_init0.i2c.fw
> Loading default analogue TV settings: xc3028_BG_PAL_A2_A.i2c.fw
> xc3028-tuner.c: firmware 2.7
> ANALOG TV REQUEST
> em28xx #0: V4L2 VBI device registered as /dev/vbi0
> em28xx #0: V4L2 device registered as /dev/video0
> em28xx #0: Found Terratec Hybrid XS (em2882)
> usbcore: registered new interface driver em28xx
> em28xx-audio.c: probing for em28x1 non standard usbaudio
> em28xx-audio.c: Copyright (C) 2006 Markus Rechberger
> Em28xx: Initialized (Em28xx Audio Extension) extension
> em2880-dvb.c: DVB Init
> Loading base firmware: xc3028_8MHz_init0.i2c.fw
> Loading specific dtv settings: xc3028_DTV8_2633.i2c.fw
> xc3028-tuner.c: firmware 2.7
> Sending extra call for Digital TV!
> /home/christian/v4l-dvb-experimental/v4l/xc3028-tuner.c: attach request!
> DVB: registering new adapter (em2880 DVB-T)
> DVB: registering frontend 0 (Zarlink ZL10353 DVB-T)...
> Em28xx: Initialized (Em2880 DVB Extension) extension
>
> --------------------
> lsusb -v
>
> Bus 003 Device 003: ID 0ccd:005e TerraTec Electronic GmbH
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               2.00
>   bDeviceClass            0 (Defined at Interface level)
>   bDeviceSubClass         0
>   bDeviceProtocol         0
>   bMaxPacketSize0        64
>   idVendor           0x0ccd TerraTec Electronic GmbH
>   idProduct          0x005e
>   bcdDevice            1.10
>   iManufacturer           3
>   iProduct                1
>   iSerial                 2
>   bNumConfigurations      1
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength          305
>     bNumInterfaces          1
>     bConfigurationValue     1
>     iConfiguration          0
>     bmAttributes         0x80
>       (Bus Powered)
>     MaxPower              500mA
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           4
>       bInterfaceClass       255 Vendor Specific Class
>       bInterfaceSubClass      0
>       bInterfaceProtocol    255
>       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              11
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x82  EP 2 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0000  1x 0 bytes
>         bInterval               1
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x83  EP 3 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0000  1x 0 bytes
>         bInterval               4
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x84  EP 4 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0000  1x 0 bytes
>         bInterval               1
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       1
>       bNumEndpoints           4
>       bInterfaceClass       255 Vendor Specific Class
>       bInterfaceSubClass      0
>       bInterfaceProtocol    255
>       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              11
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x82  EP 2 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0000  1x 0 bytes
>         bInterval               1
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x83  EP 3 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x00c4  1x 196 bytes
>         bInterval               4
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x84  EP 4 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0234  1x 564 bytes
>         bInterval               1
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       2
>       bNumEndpoints           4
>       bInterfaceClass       255 Vendor Specific Class
>       bInterfaceSubClass      0
>       bInterfaceProtocol    255
>       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              11
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x82  EP 2 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0ad4  2x 724 bytes
>         bInterval               1
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x83  EP 3 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x00c4  1x 196 bytes
>         bInterval               4
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x84  EP 4 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0234  1x 564 bytes
>         bInterval               1
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       3
>       bNumEndpoints           4
>       bInterfaceClass       255 Vendor Specific Class
>       bInterfaceSubClass      0
>       bInterfaceProtocol    255
>       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              11
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x82  EP 2 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0c00  2x 0 bytes
>         bInterval               1
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x83  EP 3 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x00c4  1x 196 bytes
>         bInterval               4
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x84  EP 4 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0234  1x 564 bytes
>         bInterval               1
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       4
>       bNumEndpoints           4
>       bInterfaceClass       255 Vendor Specific Class
>       bInterfaceSubClass      0
>       bInterfaceProtocol    255
>       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              11
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x82  EP 2 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x1300  3x 768 bytes
>         bInterval               1
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x83  EP 3 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x00c4  1x 196 bytes
>         bInterval               4
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x84  EP 4 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0234  1x 564 bytes
>         bInterval               1
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       5
>       bNumEndpoints           4
>       bInterfaceClass       255 Vendor Specific Class
>       bInterfaceSubClass      0
>       bInterfaceProtocol    255
>       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              11
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x82  EP 2 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x135c  3x 860 bytes
>         bInterval               1
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x83  EP 3 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x00c4  1x 196 bytes
>         bInterval               4
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x84  EP 4 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0234  1x 564 bytes
>         bInterval               1
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       6
>       bNumEndpoints           4
>       bInterfaceClass       255 Vendor Specific Class
>       bInterfaceSubClass      0
>       bInterfaceProtocol    255
>       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              11
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x82  EP 2 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x13c4  3x 964 bytes
>         bInterval               1
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x83  EP 3 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x00c4  1x 196 bytes
>         bInterval               4
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x84  EP 4 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0234  1x 564 bytes
>         bInterval               1
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       7
>       bNumEndpoints           4
>       bInterfaceClass       255 Vendor Specific Class
>       bInterfaceSubClass      0
>       bInterfaceProtocol    255
>       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              11
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x82  EP 2 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x1400  3x 0 bytes
>         bInterval               1
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x83  EP 3 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x00c4  1x 196 bytes
>         bInterval               4
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x84  EP 4 IN
>         bmAttributes            1
>           Transfer Type            Isochronous
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0234  1x 564 bytes
>         bInterval               1
> can't get device qualifier: Operation not permitted
> can't get debug descriptor: Operation not permitted
> cannot read device status, Operation not permitted (1)





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