Re: USB ECHI hub dection

[Greg KH <greg@xxxxxxxxx>]

On Sat, Nov 01, 2008 at 02:41:52PM +0900, J.H.Kim wrote:
> Hi, everyone
>
> In kernel 2.6.26, when the root hub of ECHI is added to usb subsytem, which 
> driver probe routine is called, generic_usb_driver or hub_driver?

Both.

For different parts of the device.

The hub interface gets the "hub_driver" probe function called for it,
and the overall USB device has the generic_usb_driver function called
for it.

> When I run debian (kernel 2.6.18) in my PC, the probe routine of hub driver 
> is called after the root hub of ehci is added to usb subsystem.
>
> Is there differences in mechanism of probing the root HUB between kernel 
> 2.6.26 and 2.6.18?

The USB core changed in different ways (actually lots of different ways)
between those two versions, as that was over 2 years of development
time.

Hope this helps,

greg k-h

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