Messages in this thread | | | Date | Tue, 12 Oct 2010 11:07:04 -0700 (PDT) | Subject | Re: [RFC/PATCH 2/2] usb: Adding SuperSpeed support to dummy_hcd | From | tlinder@codeauro ... |
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> On Tue, 12 Oct 2010, Brokhman Tatyana wrote:
Hi Alan
I see your point. I'll update this in the next patch.
Thanks Tanya
>> Hi Alan >> >> Thanks you for your comments. Please see my reply inline. > >> > In addition, I suspect the dummy_hcd driver structure shouldn't >> contain >> > an address_device entry. It should be present only in dummy_ss_hcd. >> >> I'm not sure I follow... >> According to the code and comments in hub.c address_device cb is used if >> the host controller wishes to choose the device address itself instead >> of >> the address chosen by the core. > > Correct. > >> It seems to me that there is nothing >> preventing the dummy_hcd from supplying such cb as well. Is there? >> Having both HS and SS dummy_hcd determine the device address seems more >> convenient for testing proposes. > > For testing purposes, it is best to imitate the behavior of a real > device as closely as possible. USB-2.0 host controllers do not assign > their own addresses to devices; they use the addresses provided by > usbcore. I think this is also true for the low/full/high-speed > components of a USB-3.0 controller. > > Alan Stern > >
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