From: Dan Williams <dan.j.williams@intel.com>
Date: Sat, 30 Jul 2011 00:16:45 +0000 (-0700)
Subject: [SCSI] isci: fix 32-bit operation when CONFIG_HIGHMEM64G=n
X-Git-Tag: v3.1-rc7~62^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ee33e2b771f9e9e4aaba2bb2ace7b727fe451a8b;p=pandora-kernel.git

[SCSI] isci: fix 32-bit operation when CONFIG_HIGHMEM64G=n

The unsolicited frame control infrastructure requires a table of dma
addresses for the hardware to lookup the frame buffer location by an
index.  The hardware expects the elements of this table to be 64-bit
quantities, so we cannot reference these elements as dma_addr_t.  All
unsolicited frame protocols are affected, particularly SATA-PIO and SMP
which prevented direct-attached SATA drives and expander-attached drives
to not be discovered.

Cc: <stable@kernel.org>
Reported-by: Jacek Danecki <jacek.danecki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
---

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