From: Alan Stern <stern@rowland.harvard.edu>
Date: Mon, 23 Apr 2012 17:54:36 +0000 (-0400)
Subject: EHCI: maintain the ehci->command value properly
X-Git-Tag: v3.5-rc1~149^2~327
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3d9545cc375d117554a9b35dfddadf9189c62775;p=pandora-kernel.git

EHCI: maintain the ehci->command value properly

The ehci-hcd driver is a little haphazard about keeping track of the
state of the USBCMD register.  The ehci->command field is supposed to
hold the register's value (apart from a few special bits) at all
times, but it isn't maintained properly.

This patch (as1543) cleans up the situation.  It keeps ehci->command
up-to-date, and uses that value rather than reading the register from
the hardware whenever possible.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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