From: Miquel van Smoorenburg <mikevs@xs4all.net>
Date: Tue, 4 Nov 2008 23:09:12 +0000 (+0100)
Subject: SCSI: dpt_i2o: fix transferred data length for scsi_set_resid()
X-Git-Tag: v2.6.27.7~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c9e53b238e2d99094b2158a7d85170ba7dd8eeb8;p=pandora-kernel.git

SCSI: dpt_i2o: fix transferred data length for scsi_set_resid()

commit df81d2371aeca0f7474f197a3090830899016e39 upstream.

dpt_i2o.c::adpt_i2o_to_scsi() reads the value at (reply+5) which
should contain the length in bytes of the transferred data. This
would be correct if reply was a u32 *. However it is a void * here,
so we need to read the value at (reply+20) instead.

The value at (reply+5) is usually 0xff0000, which is apparently
'large enough' and didn't cause any trouble until 2.6.27 where

commit 427e59f09fdba387547106de7bab980b7fff77be
Author: James Bottomley <James.Bottomley@HansenPartnership.com>
Date:   Sat Mar 8 18:24:17 2008 -0600

    [SCSI] make use of the residue value

caused this to become visible through e.g. iostat -x .

Signed-off-by: Miquel van Smoorenburg <mikevs@xs4all.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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