From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Fri, 2 Nov 2012 01:43:03 +0000 (-0700)
Subject: target: Fix incorrect starting offset after MODE_SENSE refactoring
X-Git-Tag: v3.8-rc1~94^2~34
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fecae40abb1ae9218bdbaa8b8e30bfb5ae43f522;p=pandora-kernel.git

target: Fix incorrect starting offset after MODE_SENSE refactoring

This patch fixes a new off-by-one bug in the hardcoded starting offset of
spc_emulate_modesense() code that causes BLOCK DESCRIPTOR to be incorrectly
written within the MEDIUM TYPE buffer area of the mode parameter header.

According to spc4r30, Section 7.5.4, BLOCK DESCRIPTOR for MODE_SENSE_10
starts at byte 3, and BLOCK_DESCRIPTOR for MODE_SENSE (6) starts at byte 2.

(roland: add MODE DATA LENGTH + MEDIUM TYPE offset comment)

Cc: Roland Dreier <roland@purestorage.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---

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