[linux-dvb] Problem about structure: usb_data_stream_properties

Markus Rechberger mrechberger at gmail.com
Thu Jul 26 11:56:32 CEST 2007


upgrade to the latest linuxtv sources and try to reproduce that
problem, since you haven't submitted complete logs it's difficult to
trace the error.
That issue might already be solved in the latest sources.


On 7/26/07, lwtbenben <lwtbenben at 163.com> wrote:
> >在2007-07-25,"Markus Rechberger" <mrechberger at gmail.com> 写道: can you submit
> >a _full_ syslog file of your system (not only a cut out part of it)?
> >There was a problem in earlier kernels with USB hotplugging, if a
> >device disappeared or rebooted the DVB framework deallocated the
> >structures immediatelly, so if something tried to access the data
> >structures when the device was already deallocated it caused a kernel
> >oops.
> >Markus
> >On 7/25/07, lwtbenben <lwtbenben at 163.com> wrote:
> >> Could somebody please give me some explanation about the structure
> >> usb_data_stream_properties, I have no idea how should I initialize my
> >> usb_data_stream_properties.
> >> Thank you in advance.
> Dear Markus:
>  Thank you for your reply.
>  And last night, I traced this kernel oops, it turned out to be a failure
> when the DVB core release my stream objects.
>  dvb_usb_exit(struct
> dvb_usb_device)->dvb_usb_adapter_exit(struct
> dvb_usb_device)->dvb_usb_adapter_stream_exit(&struct
> dvb_usb_device *d->adapter)->usb_urb_exit(adap->stream)
>  So I modified my struct dvb_usb_device_properties structure, mainly the
> usb_data_stream_properties.buffersize, and the kernel oops
> disappear.
>  But I do not understand, can you give me some help on this issue.
>  And I just can not get the meaning of the usb_data_stream_properties. :(:(
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Markus Rechberger

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