From: Valentine Barshak <vbarshak@ru.mvista.com>
Date: Tue, 5 Feb 2008 18:36:49 +0000 (+1100)
Subject: [POWERPC] 4xx: PCIe indirect DCR spinlock fix.
X-Git-Tag: v2.6.25-rc1~303^2~15^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e8318d98e95ddd3969c0701b5d15ec961ce786b2;p=pandora-kernel.git

[POWERPC] 4xx: PCIe indirect DCR spinlock fix.

Since we have mfdcri() and mtdcri() as macros, we can't use constructions,
such as "mtdcri(base, reg, mfdcri(base, reg) | val)".  In this case the
mfdcri() stuff is not evaluated first.  It's evaluated inside the mtdcri()
macro and we have the dcr_ind_lock spinlock acquired twice.

To avoid this error, I've added __mfdcri()/__mtdcri() inline functions that
take the lock after register name fix-up.

Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
---

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