Question on Linking of Endpoint to Device context (xHCI)

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Dear all,

I am a newbie and trying to understand Sarah xHCI driver code.

in xhci_alloc_virt_device(), EP(Default control) ring has been
allocated using the following call.
dev->eps[0].ring = xhci_ring_alloc(xhci, 1, true, flags);

But still I was unable to understand, how this EP will be accessed by
the xHC, means where the EP ring was linked to dev context.

Thanks in Advance,
Aditya
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