kernel: linux 2.4.21
usb host: usb-ohci
usbnet: PL2301 or GeneSys GL620USB-A(I test the both)
mainboard: winfast6300
scenerio:
(1) plug host-to-host line
(2) ifconfig usb0 up
(3) ifconfig usb0 192.12.10.35
(4) unplug the line
(5) messages on the screen:
usb-ohci.c SUB .......status:-100(...)
usb-ohci.c RET .......status:-100(...)
usbnet.c status: -100
(6) machine freeze, means linux can't response any
interrupt. The keyboard is dead, ethernet is dead , I
must cold boot the machine again.
But under linux 2.4.20 running on the same hardware,
there is no such problem.
who know and test as above.
thanks
--- David Brownell <[EMAIL PROTECTED]> wrote:
> tu guangxiu wrote:
> > lists,
> > kernel: linux 2.4.21
> > I met one severe problem when using usbnet. I
> > unplugged the line made of PL2301, linux got to
> > freeze. I tested it with linux 2.4.20. There was
> no
> > such problem. Please help!
>
> Then please provide more information. Like what
> host controller driver (uhci, usb-uhci, usb-ohci,
> etc) you used, was the network link "up" or "down",
> what kernel log messages came out, what do you mean
> by "freeze", and so on. The kind of information
> that
> is in FAQs on how to report bugs...
>
> What happens when you experiment by changing some
> of those variables -- switching host controllers
> (or drivers), doing "ifconfig usb0 down", running
> wiht (or without) CONFIG_USB_DEBUG enabled, and
> so on?
>
> - Dave
>
>
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