<div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><div>Hi All,</div><div><br></div><div>Thanks all of you to help me investigate this issue. I have forwarded this issue to Sierra engineer, hope they can solve this issue.</div><div><br></div><div>Thanks again.</div><br><br><br><br><div style="position:relative;zoom:1">--<br><div>
<div style="FONT-SIZE: 14px">
<div align="left"><strong><font color="#0000ff"><em>Best Regards,</em></font></strong></div>
<div><strong><font color="#0000ff"><em>Dai,Lijin</em></font></strong></div></div></div><div style="clear:both"></div></div><div id="divNeteaseMailCard"></div><br><pre><br>在 2015-12-23 19:58:42,"David McCullough" <david.mccullough@accelerated.com> 写道:
>
>Bjørn Mork wrote the following:
>> dailijin <dailijin126@126.com> writes:
>>
>> > tvupack tvu # cat /boot/config-3.8.0-23-generic | grep PREEMPT
>> > # CONFIG_PREEMPT_RCU is not set
>> > CONFIG_PREEMPT_NOTIFIERS=y
>> > # CONFIG_PREEMPT_NONE is not set
>> > CONFIG_PREEMPT_VOLUNTARY=y
>> > # CONFIG_PREEMPT is not set
>>
>> That's normal and fine.
>>
>>
>> >>> Dec 23 03:45:09 tvupack kernel: INFO: task slqssdk:1555 blocked for more than 120 seconds.
>> >>> Dec 23 03:45:09 tvupack kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
>> >>> Dec 23 03:45:09 tvupack kernel: slqssdk D 0000000000000000 0 1555 1390 0x00000000
>> >>> Dec 23 03:45:09 tvupack kernel: ffff8801065ab958 0000000000000086 ffff8801065ab978 ffff8801190eb1a0
>> >>> Dec 23 03:45:09 tvupack kernel: ffff8801065abfd8 ffff8801065abfd8 ffff8801065abfd8 0000000000013f40
>> >>> Dec 23 03:45:09 tvupack kernel: ffff880119b50000 ffff8801067d9740 ffff8801067d9740 ffff88010fe05968
>> >>> Dec 23 03:45:09 tvupack kernel: Call Trace:
>> >>> Dec 23 03:45:09 tvupack kernel: [<ffffffff816e0669>] schedule+0x29/0x70
>> >>> Dec 23 03:45:09 tvupack kernel: [<ffffffff816e091e>] schedule_preempt_disabled+0xe/0x10
>> >>> Dec 23 03:45:09 tvupack kernel: [<ffffffff816df597>] __mutex_lock_slowpath+0xd7/0x150
>> >>> Dec 23 03:45:09 tvupack kernel: [<ffffffff8151084e>] ? usb_alloc_urb+0x1e/0x50
>> >>> Dec 23 03:45:09 tvupack kernel: [<ffffffff816df1aa>] mutex_lock+0x2a/0x50
>> >>> Dec 23 03:45:09 tvupack kernel: [<ffffffffa029e10c>] Gobi_dtr_rts+0x6c/0x130 [GobiSerial]
>> >>> Dec 23 03:45:09 tvupack kernel: [<ffffffffa03b2725>] ? usb_serial_generic_submit_read_urb+0x25/0x30 [usbserial]
>> >>> Dec 23 03:45:09 tvupack kernel: [<ffffffffa03b058f>] serial_dtr_rts+0x7f/0x90 [usbserial]
>> >>> Dec 23 03:45:09 tvupack kernel: [<ffffffff81429044>] tty_port_block_til_ready+0x174/0x320
>> >>> Dec 23 03:45:09 tvupack kernel: [<ffffffff8107fc10>] ? add_wait_queue+0x60/0x60
>> >>> Dec 23 03:45:09 tvupack kernel: [<ffffffffa03b04f2>] ? serial_activate+0x82/0xa0 [usbserial]
>> >>> Dec 23 03:45:09 tvupack kernel: [<ffffffff814293eb>] tty_port_open+0xbb/0xe0
>>
>>
>> There is obviously something going wrong here. Any chance you can
>> recreate this problem on a (semi-)recent kernel?
>>
>> The serial_dtr_rts function was renamed to serial_port_dtr_rts in v3.10,
>> so you are obviously using something older than that. There have been
>> quite a few cleanups and code refactoring in this area since then. So I
>> don't think there is any point wasting time on debugging this on such an
>> old kernel.
>
>I am running 4.1.
>
>Cheers,
>Davidm
>
>--
>David McCullough, david.mccullough@accelerated.com, Ph: 0410 560 763
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