From: Vikram Pandita <vikram.pandita@ti.com>
Date: Sun, 30 Oct 2011 19:55:09 +0000 (-0700)
Subject: USB: ehci: report Data Buffer Error in debug mode
X-Git-Tag: v3.3-rc1~153^2~104
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=332960bd7eb48ef21923b4876e7fe3487d6bf11c;p=pandora-kernel.git

USB: ehci: report Data Buffer Error in debug mode

Data Buffer Error as per spec section 4.15.1.1.2
results when there is Underrun or Overrun condition.

This error is considered non-fatal and never gets reported.
Its a very good indication on things going wrong at system level,
like running memory at much slower speed.

This is a good error to flag allowing system level corrections.

An issue was found with OMAP4460 board where DDR had to be run
at full speed and this logging helped.

Signed-off-by: Vikram Pandita <vikram.pandita@ti.com>
Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Vikram Pandita <vikram.pandita@ti.com>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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