From: Matthew Wilcox <matthew@wil.cx>
Date: Wed, 15 Dec 2010 19:18:11 +0000 (-0500)
Subject: xhci: Remove more doorbell-related reads
X-Git-Tag: v2.6.38-rc3~7^2^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=50d64676d132a8a72a1a1657d7b3e6efa53da1ac;p=pandora-kernel.git

xhci: Remove more doorbell-related reads

The unused space in the doorbell is now marked as RsvdZ, not RsvdP, so
we can avoid reading the doorbell before writing it.

Update the doorbell-related defines to produce the entire doorbell value
from a single macro.  Document the doorbell format in a comment.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
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