Re: (4.3.0) r8152: deadlock related to runtime suspend?

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http://lkml.iu.edu/hypermail/linux/kernel/1512.0/04117.html
http://lkml.iu.edu/hypermail/linux/kernel/1512.0/04831.html

Same issue here with kernel 4.4.10 and 4.5.4 and r8153. Mine is an USB 3.0 Hub with Gigabit Ethernet, so the common point seems to be USB 3.0. For me it only happens when playing openmw.

[12480.821609] INFO: task kworker/3:1:3221 blocked for more than 120 seconds.
[12480.821630]       Not tainted 4.4.10-1-ARCH #1
[12480.821633] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [12480.821637] kworker/3:1 D ffff880172963c38 0 3221 2 0x00000000
[12480.821677] Workqueue: events rtl_work_func_t [r8152]
[12480.821683] ffff880172963c38 0000000000000066 ffff880214b5b700 ffff8801e85c9b80 [12480.821690] ffff880172964000 ffff88003781a140 ffff88003781a200 0000000000000000 [12480.821695] 0000000000000000 ffff880172963c50 ffffffff815b430c ffff88003781a090
[12480.821701] Call Trace:
[12480.821727]  [<ffffffff815b430c>] schedule+0x3c/0x90
[12480.821739]  [<ffffffff813fa018>] rpm_resume+0x118/0x6e0
[12480.821753]  [<ffffffff810b87c0>] ? wake_atomic_t_function+0x60/0x60
[12480.821758]  [<ffffffff813fa26e>] rpm_resume+0x36e/0x6e0
[12480.821762]  [<ffffffff810ac045>] ? dequeue_entity+0x265/0xa70
[12480.821770]  [<ffffffff812deb08>] ? find_next_bit+0x18/0x20
[12480.821777]  [<ffffffff81183066>] ? next_online_pgdat+0x26/0x50
[12480.821787]  [<ffffffff813fa61f>] __pm_runtime_resume+0x3f/0x60
[12480.821796]  [<ffffffff8143a072>] usb_autopm_get_interface+0x22/0x60
[12480.821808]  [<ffffffffa098c060>] rtl_work_func_t+0x70/0x420 [r8152]
[12480.821821]  [<ffffffff8109caf8>] ? finish_task_switch+0x78/0x1f0
[12480.821834]  [<ffffffff8108f674>] process_one_work+0x1e4/0x470
[12480.821840]  [<ffffffff8108f948>] worker_thread+0x48/0x4a0
[12480.821847]  [<ffffffff8108f900>] ? process_one_work+0x470/0x470
[12480.821852]  [<ffffffff8108f900>] ? process_one_work+0x470/0x470
[12480.821862]  [<ffffffff81095508>] kthread+0xd8/0xf0
[12480.821867]  [<ffffffff81095430>] ? kthread_worker_fn+0x170/0x170
[12480.821875]  [<ffffffff815b80ff>] ret_from_fork+0x3f/0x70
[12480.821879]  [<ffffffff81095430>] ? kthread_worker_fn+0x170/0x170
[12600.826910] INFO: task kworker/3:1:3221 blocked for more than 120 seconds.
[12600.826934]       Not tainted 4.4.10-1-ARCH #1
[12600.826938] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [12600.826943] kworker/3:1 D ffff880172963c38 0 3221 2 0x00000000
[12600.826985] Workqueue: events rtl_work_func_t [r8152]
[12600.826992] ffff880172963c38 0000000000000066 ffff880214b5b700 ffff8801e85c9b80 [12600.826999] ffff880172964000 ffff88003781a140 ffff88003781a200 0000000000000000 [12600.827004] 0000000000000000 ffff880172963c50 ffffffff815b430c ffff88003781a090
[12600.827009] Call Trace:
[12600.827030]  [<ffffffff815b430c>] schedule+0x3c/0x90
[12600.827039]  [<ffffffff813fa018>] rpm_resume+0x118/0x6e0
[12600.827053]  [<ffffffff810b87c0>] ? wake_atomic_t_function+0x60/0x60
[12600.827059]  [<ffffffff813fa26e>] rpm_resume+0x36e/0x6e0
[12600.827063]  [<ffffffff810ac045>] ? dequeue_entity+0x265/0xa70
[12600.827069]  [<ffffffff812deb08>] ? find_next_bit+0x18/0x20
[12600.827075]  [<ffffffff81183066>] ? next_online_pgdat+0x26/0x50
[12600.827082]  [<ffffffff813fa61f>] __pm_runtime_resume+0x3f/0x60
[12600.827089]  [<ffffffff8143a072>] usb_autopm_get_interface+0x22/0x60
[12600.827098]  [<ffffffffa098c060>] rtl_work_func_t+0x70/0x420 [r8152]
[12600.827104]  [<ffffffff8109caf8>] ? finish_task_switch+0x78/0x1f0
[12600.827112]  [<ffffffff8108f674>] process_one_work+0x1e4/0x470
[12600.827122]  [<ffffffff8108f948>] worker_thread+0x48/0x4a0
[12600.827127]  [<ffffffff8108f900>] ? process_one_work+0x470/0x470
[12600.827132]  [<ffffffff8108f900>] ? process_one_work+0x470/0x470
[12600.827137]  [<ffffffff81095508>] kthread+0xd8/0xf0
[12600.827143]  [<ffffffff81095430>] ? kthread_worker_fn+0x170/0x170
[12600.827152]  [<ffffffff815b80ff>] ret_from_fork+0x3f/0x70
[12600.827156]  [<ffffffff81095430>] ? kthread_worker_fn+0x170/0x170
[12720.832405] INFO: task kworker/3:1:3221 blocked for more than 120 seconds.
[12720.832426]       Not tainted 4.4.10-1-ARCH #1
[12720.832429] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [12720.832432] kworker/3:1 D ffff880172963c38 0 3221 2 0x00000000
[12720.832481] Workqueue: events rtl_work_func_t [r8152]
[12720.832490] ffff880172963c38 0000000000000066 ffff880214b5b700 ffff8801e85c9b80 [12720.832497] ffff880172964000 ffff88003781a140 ffff88003781a200 0000000000000000 [12720.832502] 0000000000000000 ffff880172963c50 ffffffff815b430c ffff88003781a090
[12720.832507] Call Trace:
[12720.832541]  [<ffffffff815b430c>] schedule+0x3c/0x90
[12720.832559]  [<ffffffff813fa018>] rpm_resume+0x118/0x6e0
[12720.832579]  [<ffffffff810b87c0>] ? wake_atomic_t_function+0x60/0x60
[12720.832585]  [<ffffffff813fa26e>] rpm_resume+0x36e/0x6e0
[12720.832592]  [<ffffffff810ac045>] ? dequeue_entity+0x265/0xa70
[12720.832599]  [<ffffffff812deb08>] ? find_next_bit+0x18/0x20
[12720.832611]  [<ffffffff81183066>] ? next_online_pgdat+0x26/0x50
[12720.832621]  [<ffffffff813fa61f>] __pm_runtime_resume+0x3f/0x60
[12720.832635]  [<ffffffff8143a072>] usb_autopm_get_interface+0x22/0x60
[12720.832651]  [<ffffffffa098c060>] rtl_work_func_t+0x70/0x420 [r8152]
[12720.832659]  [<ffffffff8109caf8>] ? finish_task_switch+0x78/0x1f0
[12720.832680]  [<ffffffff8108f674>] process_one_work+0x1e4/0x470
[12720.832690]  [<ffffffff8108f948>] worker_thread+0x48/0x4a0
[12720.832697]  [<ffffffff8108f900>] ? process_one_work+0x470/0x470
[12720.832705]  [<ffffffff8108f900>] ? process_one_work+0x470/0x470
[12720.832712]  [<ffffffff81095508>] kthread+0xd8/0xf0
[12720.832717]  [<ffffffff81095430>] ? kthread_worker_fn+0x170/0x170
[12720.832723]  [<ffffffff815b80ff>] ret_from_fork+0x3f/0x70
[12720.832727]  [<ffffffff81095430>] ? kthread_worker_fn+0x170/0x170
[12840.837567] INFO: task avahi-daemon:732 blocked for more than 120 seconds.
[12840.837578]       Not tainted 4.4.10-1-ARCH #1
[12840.837583] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [12840.837586] avahi-daemon D ffff88020ddfbc18 0 732 1 0x00000000 [12840.837600] ffff88020ddfbc18 0000000000000200 ffff880212801b80 ffff88020fe5c4c0 [12840.837606] ffff88020ddfc000 ffffffff818b7b04 ffff88020fe5c4c0 00000000ffffffff [12840.837610] ffffffff818b7b08 ffff88020ddfbc30 ffffffff815b430c ffffffff818b7b00
[12840.837615] Call Trace:
[12840.837638]  [<ffffffff815b430c>] schedule+0x3c/0x90
[12840.837644]  [<ffffffff815b46a5>] schedule_preempt_disabled+0x15/0x20
[12840.837649]  [<ffffffff815b5b5e>] __mutex_lock_slowpath+0xce/0x140
[12840.837652]  [<ffffffff815b5be7>] mutex_lock+0x17/0x30
[12840.837660]  [<ffffffff814c2835>] rtnl_lock+0x15/0x20
[12840.837666]  [<ffffffff815742a7>] do_ipv6_setsockopt.isra.4+0x167/0x1140
[12840.837679]  [<ffffffff810b8690>] ? __wake_up_sync_key+0x50/0x60
[12840.837685]  [<ffffffff8149aa2f>] ? sock_def_readable+0x6f/0x80
[12840.837689]  [<ffffffff81558631>] ? unix_dgram_sendmsg+0x361/0x710
[12840.837694]  [<ffffffff81497067>] ? sock_sendmsg+0x17/0x30
[12840.837698]  [<ffffffff81498450>] ? SyS_sendto+0x140/0x190
[12840.837703]  [<ffffffff815752d3>] ipv6_setsockopt+0x53/0xc0
[12840.837711]  [<ffffffff8157ac1b>] udpv6_setsockopt+0x1b/0x30
[12840.837714]  [<ffffffff81499474>] sock_common_setsockopt+0x14/0x20
[12840.837717]  [<ffffffff814986c2>] SyS_setsockopt+0x72/0xe0
[12840.837722]  [<ffffffff815b7dae>] entry_SYSCALL_64_fastpath+0x12/0x6d
[12840.837745] INFO: task Qt bearer threa:1161 blocked for more than 120 seconds.
[12840.837748]       Not tainted 4.4.10-1-ARCH #1
[12840.837750] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [12840.837752] Qt bearer threa D ffff8801ebc5fc78 0 1161 999 0x00000000 [12840.837757] ffff8801ebc5fc78 0000000000000008 ffff8800c0a5a940 ffff8801ebc60000 [12840.837761] ffff8801ebc60000 ffffffff818b7b04 ffff8801ebc60000 00000000ffffffff [12840.837765] ffffffff818b7b08 ffff8801ebc5fc90 ffffffff815b430c ffffffff818b7b00
[12840.837769] Call Trace:
[12840.837776]  [<ffffffff815b430c>] schedule+0x3c/0x90
[12840.837781]  [<ffffffff815b46a5>] schedule_preempt_disabled+0x15/0x20
[12840.837783]  [<ffffffff815b5b5e>] __mutex_lock_slowpath+0xce/0x140
[12840.837787]  [<ffffffff815b5be7>] mutex_lock+0x17/0x30
[12840.837791]  [<ffffffff814c5749>] rtnetlink_rcv+0x19/0x30
[12840.837797]  [<ffffffff814e5cc8>] netlink_unicast+0x128/0x1d0
[12840.837801]  [<ffffffff814e632d>] netlink_sendmsg+0x4ed/0x600
[12840.837805]  [<ffffffff814e443c>] ? netlink_insert+0x1dc/0x370
[12840.837809]  [<ffffffff81497067>] sock_sendmsg+0x17/0x30
[12840.837812]  [<ffffffff81498450>] SyS_sendto+0x140/0x190
[12840.837816]  [<ffffffff814981fa>] ? SyS_getsockname+0xaa/0xe0
[12840.837823]  [<ffffffff81495165>] ? sock_alloc_file+0xa5/0x130
[12840.837827]  [<ffffffff811fde45>] ? fd_install+0x25/0x30
[12840.837830]  [<ffffffff81497a5f>] ? SyS_socket+0x9f/0xf0
[12840.837835]  [<ffffffff815b7dae>] entry_SYSCALL_64_fastpath+0x12/0x6d
[12840.837846] INFO: task mission-control:1050 blocked for more than 120 seconds.
[12840.837848]       Not tainted 4.4.10-1-ARCH #1
[12840.837850] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [12840.837852] mission-control D ffff8800c096bc78 0 1050 940 0x00000000 [12840.837859] ffff8800c096bc78 0000000100000000 ffff8800b5aa6e00 ffff8802133d8dc0 [12840.837863] ffff8800c096c000 ffffffff818b7b04 ffff8802133d8dc0 00000000ffffffff [12840.837867] ffffffff818b7b08 ffff8800c096bc90 ffffffff815b430c ffffffff818b7b00
[12840.837871] Call Trace:
[12840.837878]  [<ffffffff815b430c>] schedule+0x3c/0x90
[12840.837882]  [<ffffffff815b46a5>] schedule_preempt_disabled+0x15/0x20
[12840.837886]  [<ffffffff815b5b5e>] __mutex_lock_slowpath+0xce/0x140
[12840.837889]  [<ffffffff815b5be7>] mutex_lock+0x17/0x30
[12840.837895]  [<ffffffff814c5749>] rtnetlink_rcv+0x19/0x30
[12840.837899]  [<ffffffff814e5cc8>] netlink_unicast+0x128/0x1d0
[12840.837904]  [<ffffffff814e632d>] netlink_sendmsg+0x4ed/0x600
[12840.837909]  [<ffffffff81497067>] sock_sendmsg+0x17/0x30
[12840.837913]  [<ffffffff81498450>] SyS_sendto+0x140/0x190
[12840.837923]  [<ffffffff811e1376>] ? vfs_read+0x86/0x130
[12840.837927]  [<ffffffff811e211c>] ? SyS_read+0xac/0xc0
[12840.837933]  [<ffffffff815b7dae>] entry_SYSCALL_64_fastpath+0x12/0x6d
[12840.837952] INFO: task Qt bearer threa:1124 blocked for more than 120 seconds.
[12840.837955]       Not tainted 4.4.10-1-ARCH #1
[12840.837957] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [12840.837959] Qt bearer threa D ffff8800bb26fc78 0 1124 999 0x00000000 [12840.837964] ffff8800bb26fc78 0000000000000008 ffff8801ebc60000 ffff88020fd50000 [12840.837968] ffff8800bb270000 ffffffff818b7b04 ffff88020fd50000 00000000ffffffff [12840.837971] ffffffff818b7b08 ffff8800bb26fc90 ffffffff815b430c ffffffff818b7b00
[12840.837975] Call Trace:
[12840.837981]  [<ffffffff815b430c>] schedule+0x3c/0x90
[12840.837985]  [<ffffffff815b46a5>] schedule_preempt_disabled+0x15/0x20
[12840.837987]  [<ffffffff815b5b5e>] __mutex_lock_slowpath+0xce/0x140
[12840.837990]  [<ffffffff815b5be7>] mutex_lock+0x17/0x30
[12840.837993]  [<ffffffff814c5749>] rtnetlink_rcv+0x19/0x30
[12840.837997]  [<ffffffff814e5cc8>] netlink_unicast+0x128/0x1d0
[12840.838001]  [<ffffffff814e632d>] netlink_sendmsg+0x4ed/0x600
[12840.838005]  [<ffffffff814e443c>] ? netlink_insert+0x1dc/0x370
[12840.838009]  [<ffffffff81497067>] sock_sendmsg+0x17/0x30
[12840.838012]  [<ffffffff81498450>] SyS_sendto+0x140/0x190
[12840.838015]  [<ffffffff814981fa>] ? SyS_getsockname+0xaa/0xe0
[12840.838022]  [<ffffffff81495165>] ? sock_alloc_file+0xa5/0x130
[12840.838027]  [<ffffffff811fde45>] ? fd_install+0x25/0x30
[12840.838030]  [<ffffffff81497a5f>] ? SyS_socket+0x9f/0xf0
[12840.838034]  [<ffffffff815b7dae>] entry_SYSCALL_64_fastpath+0x12/0x6d
[12840.838075] INFO: task Qt bearer threa:1349 blocked for more than 120 seconds.
[12840.838082]       Not tainted 4.4.10-1-ARCH #1
[12840.838083] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [12840.838087] Qt bearer threa D ffff8801d8c93c78 0 1349 1108 0x00000000 [12840.838091] ffff8801d8c93c78 0000000000000008 ffff880212801b80 ffff8801d8cf3700 [12840.838094] ffff8801d8c94000 ffffffff818b7b04 ffff8801d8cf3700 00000000ffffffff [12840.838099] ffffffff818b7b08 ffff8801d8c93c90 ffffffff815b430c ffffffff818b7b00
[12840.838104] Call Trace:
[12840.838109]  [<ffffffff815b430c>] schedule+0x3c/0x90
[12840.838114]  [<ffffffff815b46a5>] schedule_preempt_disabled+0x15/0x20
[12840.838118]  [<ffffffff815b5b5e>] __mutex_lock_slowpath+0xce/0x140
[12840.838120]  [<ffffffff815b5be7>] mutex_lock+0x17/0x30
[12840.838123]  [<ffffffff814c5749>] rtnetlink_rcv+0x19/0x30
[12840.838130]  [<ffffffff814e5cc8>] netlink_unicast+0x128/0x1d0
[12840.838134]  [<ffffffff814e632d>] netlink_sendmsg+0x4ed/0x600
[12840.838139]  [<ffffffff814e443c>] ? netlink_insert+0x1dc/0x370
[12840.838142]  [<ffffffff81497067>] sock_sendmsg+0x17/0x30
[12840.838146]  [<ffffffff81498450>] SyS_sendto+0x140/0x190
[12840.838150]  [<ffffffff814981fa>] ? SyS_getsockname+0xaa/0xe0
[12840.838155]  [<ffffffff81495165>] ? sock_alloc_file+0xa5/0x130
[12840.838161]  [<ffffffff811fde45>] ? fd_install+0x25/0x30
[12840.838164]  [<ffffffff81497a5f>] ? SyS_socket+0x9f/0xf0
[12840.838169]  [<ffffffff815b7dae>] entry_SYSCALL_64_fastpath+0x12/0x6d
[12840.838176] INFO: task Qt bearer threa:1356 blocked for more than 120 seconds.
[12840.838179]       Not tainted 4.4.10-1-ARCH #1
[12840.838180] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [12840.838183] Qt bearer threa D ffff8800a8487c78 0 1356 1108 0x00000000 [12840.838187] ffff8800a8487c78 0000000000000008 ffff8801d8cf6040 ffff8800aabf5280 [12840.838192] ffff8800a8488000 ffffffff818b7b04 ffff8800aabf5280 00000000ffffffff [12840.838197] ffffffff818b7b08 ffff8800a8487c90 ffffffff815b430c ffffffff818b7b00
[12840.838202] Call Trace:
[12840.838209]  [<ffffffff815b430c>] schedule+0x3c/0x90
[12840.838213]  [<ffffffff815b46a5>] schedule_preempt_disabled+0x15/0x20
[12840.838217]  [<ffffffff815b5b5e>] __mutex_lock_slowpath+0xce/0x140
[12840.838220]  [<ffffffff815b5be7>] mutex_lock+0x17/0x30
[12840.838223]  [<ffffffff814c5749>] rtnetlink_rcv+0x19/0x30
[12840.838228]  [<ffffffff814e5cc8>] netlink_unicast+0x128/0x1d0
[12840.838231]  [<ffffffff814e632d>] netlink_sendmsg+0x4ed/0x600
[12840.838234]  [<ffffffff814e443c>] ? netlink_insert+0x1dc/0x370
[12840.838238]  [<ffffffff81497067>] sock_sendmsg+0x17/0x30
[12840.838240]  [<ffffffff81498450>] SyS_sendto+0x140/0x190
[12840.838244]  [<ffffffff814981fa>] ? SyS_getsockname+0xaa/0xe0
[12840.838248]  [<ffffffff81495165>] ? sock_alloc_file+0xa5/0x130
[12840.838252]  [<ffffffff811fde45>] ? fd_install+0x25/0x30
[12840.838255]  [<ffffffff81497a5f>] ? SyS_socket+0x9f/0xf0
[12840.838260]  [<ffffffff815b7dae>] entry_SYSCALL_64_fastpath+0x12/0x6d
[12840.838273] INFO: task Qt bearer threa:1361 blocked for more than 120 seconds.
[12840.838276]       Not tainted 4.4.10-1-ARCH #1
[12840.838278] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [12840.838280] Qt bearer threa D ffff8801d8c6bc78 0 1361 1108 0x00000000 [12840.838284] ffff8801d8c6bc78 0000000000000008 ffff8800aabf44c0 ffff8801d8cf6040 [12840.838287] ffff8801d8c6c000 ffffffff818b7b04 ffff8801d8cf6040 00000000ffffffff [12840.838291] ffffffff818b7b08 ffff8801d8c6bc90 ffffffff815b430c ffffffff818b7b00
[12840.838296] Call Trace:
[12840.838301]  [<ffffffff815b430c>] schedule+0x3c/0x90
[12840.838305]  [<ffffffff815b46a5>] schedule_preempt_disabled+0x15/0x20
[12840.838308]  [<ffffffff815b5b5e>] __mutex_lock_slowpath+0xce/0x140
[12840.838312]  [<ffffffff815b5be7>] mutex_lock+0x17/0x30
[12840.838315]  [<ffffffff814c5749>] rtnetlink_rcv+0x19/0x30
[12840.838318]  [<ffffffff814e5cc8>] netlink_unicast+0x128/0x1d0
[12840.838322]  [<ffffffff814e632d>] netlink_sendmsg+0x4ed/0x600
[12840.838325]  [<ffffffff814e443c>] ? netlink_insert+0x1dc/0x370
[12840.838328]  [<ffffffff81497067>] sock_sendmsg+0x17/0x30
[12840.838332]  [<ffffffff81498450>] SyS_sendto+0x140/0x190
[12840.838335]  [<ffffffff814981fa>] ? SyS_getsockname+0xaa/0xe0
[12840.838340]  [<ffffffff81495165>] ? sock_alloc_file+0xa5/0x130
[12840.838347]  [<ffffffff811fde45>] ? fd_install+0x25/0x30
[12840.838350]  [<ffffffff81497a5f>] ? SyS_socket+0x9f/0xf0
[12840.838355]  [<ffffffff815b7dae>] entry_SYSCALL_64_fastpath+0x12/0x6d


Bus 002 Device 003: ID 0bda:8153 Realtek Semiconductor Corp. Couldn't open device, some information will be missing
Device Descriptor:
 bLength                18
 bDescriptorType         1
 bcdUSB               3.00
bDeviceClass 0 bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 9
 idVendor           0x0bda Realtek Semiconductor Corp.
idProduct 0x8153 bcdDevice 30.00 iManufacturer 1 iProduct 2 iSerial 3 bNumConfigurations 2
 Configuration Descriptor:
   bLength                 9
   bDescriptorType         2
   wTotalLength           57
   bNumInterfaces          1
   bConfigurationValue     1
iConfiguration 0 bmAttributes 0xa0
     (Bus Powered)
     Remote Wakeup
   MaxPower               36mA
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        0
     bAlternateSetting       0
     bNumEndpoints           3
     bInterfaceClass       255 Vendor Specific Class
     bInterfaceSubClass    255 Vendor Specific Subclass
bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x81  EP 1 IN
       bmAttributes            2
         Transfer Type            Bulk
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0400  1x 1024 bytes
       bInterval               0
       bMaxBurst               0
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x02  EP 2 OUT
       bmAttributes            2
         Transfer Type            Bulk
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0400  1x 1024 bytes
       bInterval               0
       bMaxBurst               0
     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
       bMaxBurst               0
 Configuration Descriptor:
   bLength                 9
   bDescriptorType         2
   wTotalLength           98
   bNumInterfaces          2
   bConfigurationValue     2
iConfiguration 0 bmAttributes 0xa0
     (Bus Powered)
     Remote Wakeup
   MaxPower               36mA
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        0
     bAlternateSetting       0
     bNumEndpoints           1
     bInterfaceClass         2 Communications
     bInterfaceSubClass      6 Ethernet Networking
bInterfaceProtocol 0 iInterface 5 CDC Header:
       bcdCDC               1.10
     CDC Union:
       bMasterInterface        0
bSlaveInterface 1 CDC Ethernet:
       iMacAddress                      3 (??)
       bmEthernetStatistics    0x00000000
       wMaxSegmentSize               1514
       wNumberMCFilters            0x0000
       bNumberPowerFilters              0
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x83  EP 3 IN
       bmAttributes            3
         Transfer Type            Interrupt
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0010  1x 16 bytes
       bInterval               8
       bMaxBurst               0
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        1
     bAlternateSetting       0
     bNumEndpoints           0
     bInterfaceClass        10 CDC Data
bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        1
     bAlternateSetting       1
     bNumEndpoints           2
     bInterfaceClass        10 CDC Data
bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 4 Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x81  EP 1 IN
       bmAttributes            2
         Transfer Type            Bulk
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0400  1x 1024 bytes
       bInterval               0
       bMaxBurst               0
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x02  EP 2 OUT
       bmAttributes            2
         Transfer Type            Bulk
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x0400  1x 1024 bytes
       bInterval               0
       bMaxBurst               0
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