On 09/22/14 08:31, Kohji Okuno wrote:

Could you refer to the following document (4.6.6 Configure Endpoint:P.99)?
This document shows:

If the Drop Context flag is `1' and the Add Context flag is `1', the xHC shall:
o Release the current Resources and Bandwidth allocated to the
   endpoint and assign the new Resources and Bandwidth requested for
   the endpoint.


I see.

Then what is missing to your patch is to mask away bits 0 and 1, because those are reserved for D0 and D1 and should be zero?


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