* How to understand "using interfaces layered over USB" in this article?
@ 2014-09-08 3:31 lx
2014-09-08 17:34 ` Greg KH
0 siblings, 1 reply; 2+ messages in thread
From: lx @ 2014-09-08 3:31 UTC (permalink / raw)
To: kernelnewbies
hi all:
I read this article, but I can't understand this section?
############################################################
Most USB device drivers should pass these tables to the USB subsystem as
well as to the module management subsystem. Not all, though: *some driver
frameworks connect using interfaces layered over USB, and so they won't
need such a "struct usb_driver".*
############################################################
From: https://www.kernel.org/doc/Documentation/usb/hotplug.txt
How to understand "using interfaces layered over USB"?
Thank you.
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^ permalink raw reply [flat|nested] 2+ messages in thread* How to understand "using interfaces layered over USB" in this article?
2014-09-08 3:31 How to understand "using interfaces layered over USB" in this article? lx
@ 2014-09-08 17:34 ` Greg KH
0 siblings, 0 replies; 2+ messages in thread
From: Greg KH @ 2014-09-08 17:34 UTC (permalink / raw)
To: kernelnewbies
On Mon, Sep 08, 2014 at 11:31:32AM +0800, lx wrote:
> hi all:
> ? ? ? I read this article, but I can't understand this??section?
> ############################################################
>
> Most USB device drivers should pass these tables to the USB subsystem as
> well as to the module management subsystem. Not all, though: some driver
> frameworks connect using interfaces layered over USB, and so they won't
> need such a "struct usb_driver".
>
> ############################################################
> From:?https://www.kernel.org/doc/Documentation/usb/hotplug.txt
>
> How to understand "using interfaces layered over USB"?
Think SCSI, HID, Serial, or any other type of usb device that is just
using the USB connection as a physical transport of a specific type of
data.
Does that help?
greg k-h
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2014-09-08 3:31 How to understand "using interfaces layered over USB" in this article? lx
2014-09-08 17:34 ` Greg KH
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