On Fri, Jun 03, 2005 at 11:20:33AM +0800, Enzo Chen (?????h) wrote:
> Hi all,
>  
>   Recently, we are developing USB driver for our products, and we found the 
> "usb_unlink_urb" function not work.
>  
>   The S/W platform is Fedora Core 2 with kernel version 2.6.5-1, when we open 
> our USB device node, we submit the read_urb,
>   and it is expected to be unlinked when the user program close USB device.
>   But the "usb_unlink_urb" seems blocked when close function excuting, and 
> released on the next time the USB device plug-in. 
>     (when un-plug and then plug-in the device again)

Hm, have a pointer to your code so we can see what is going on?

> Is this a bug in linux kernel under version 2.6.9 ? or something wrong in our 
> driver ? how could we fix this?

Does it work on 2.6.12-rc5?  2.6.11?

Remember, Fedora Core 2 isn't even supported by Red Hat anymore, that
kernel is quite old :)

thanks,

greg k-h


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