Re: usb cold plugging

[Fumitoshi UKAI <ukai@debian.or.jp>]

At Fri, 26 Mar 2004 15:15:31 -0800,
Greg KH wrote:
> 
> On Mon, Mar 15, 2004 at 02:58:40AM +0900, Fumitoshi UKAI wrote:
> > Hi,
> > 
> > It seems there are some problems in usb coldplugging.
> > 
> > 1) after usb core modules loaded, it needs some time to propagate
> >   information to /proc or /sys. So, I think we need some wait before
> >   calling usb_boot_events.
> >   But I'm not sure it is sufficient to sleep 1 sec. are there any 
> >   better way to wait some files in /proc or /sys ?
> 
> Sure, you can wait until the specific bus files show up under
> /sys/bus/BUS_TYPE
> 
> > 2) if /sys/bus/usb/devices found, it updates DEVPATH and PRODUCT, but
> >    it never call /etc/hotplug/usb.agent, so no coldplugging happens.
> 
> That's not good.
> 
> > Is this patch ok to commit?
> 
> Looks good to me for now.  The sleep thing can't hurt :)
> 
> Feel free to commit it.

Ok, commited.

thanks,
Fumitoshi UKAI


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