From: Roland Dreier <rolandd@cisco.com>
Date: Fri, 15 Dec 2006 22:01:49 +0000 (-0800)
Subject: IB/srp: Fix FMR mapping for 32-bit kernels and addresses above 4G
X-Git-Tag: v2.6.20-rc2~122^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bf628dc22a09ed2022abb32c76011ae5f99ad6b0;p=pandora-kernel.git

IB/srp: Fix FMR mapping for 32-bit kernels and addresses above 4G

struct srp_device.fmr_page_mask was unsigned long, which means that
the top part of addresses above 4G was being chopped off on 32-bit
architectures.  Of course nothing good happens when data from SRP
targets is DMAed to the wrong place.

Fix this by changing fmr_page_mask to u64, to match the addresses
actually used by IB devices.

Thanks to Brian Cain <Brian.Cain@ge.com> and David McMillen
<davem@systemfabricworks.com> for help diagnosing the bug and testing
the fix.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
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