From: Andiry Xu <andiry.xu@amd.com>
Date: Mon, 5 Mar 2012 09:49:37 +0000 (+0800)
Subject: xHCI: dynamic ring expansion
X-Git-Tag: v3.4-rc1~184^2~21^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8dfec6140fc617b932cf9a09ba46d0ee3f3a7d87;p=pandora-kernel.git

xHCI: dynamic ring expansion

If room_on_ring() check fails, try to expand the ring and check again.

When expand a ring, use a cached ring or allocate new segments, link
the original ring and the new ring or segments, update the original ring's
segment numbers and the last segment pointer.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Tested-by: Paul Zimmerman <Paul.Zimmerman@synopsys.com>
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