From: Bryan O'Sullivan <bos@pathscale.com>
Date: Thu, 28 Sep 2006 16:00:18 +0000 (-0700)
Subject: IB/ipath: Fix and recover TXE piobuf and PBC parity errors
X-Git-Tag: v2.6.19-rc1~652^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=89d1e09b6a6d844ef327937f41658a426be42501;p=pandora-kernel.git

IB/ipath: Fix and recover TXE piobuf and PBC parity errors

We can sometimes trigger parity errors due to processor speculative
reads to our write-combined memory (mostly seen on Woodcrest).   Add a
stats counter for these.

Factored out the sendbuffererror buffer cancellation code so it can be
used in the new handling; suppress likely subsequent error messages if
within two jiffies of the cancellation.

Also restore 2 dropped TXE lines on hwe_bitsextant noticed while
debugging.

Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
---

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