On Wed, 19 Dec 2012, Chen Gang wrote:

>   although we can not say it is surely a bug.
>   it is better to set urb->hcpriv = NULL, after finish calling urb_free_priv.
> 
> 
> Signed-off-by: Chen Gang <gang.c...@asianux.com>
> ---
>  drivers/usb/host/ohci-q.c |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c
> index 7482cfb..88731b7 100644
> --- a/drivers/usb/host/ohci-q.c
> +++ b/drivers/usb/host/ohci-q.c
> @@ -44,6 +44,7 @@ __acquires(ohci->lock)
>       // ASSERT (urb->hcpriv != 0);
>  
>       urb_free_priv (ohci, urb->hcpriv);
> +     urb->hcpriv = NULL;
>       if (likely(status == -EINPROGRESS))
>               status = 0;
>  

Acked-by: Alan Stern <st...@rowland.harvard.edu>

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