From: Ilias Tsitsimpis <iliastsi@arrikto.com>
Date: Thu, 23 Apr 2015 18:30:07 +0000 (+0300)
Subject: target/transport: Always initialize bidi fields in se_cmd
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~8^2~68
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b32bd0a8ee6a19f9b70aa4fcb9bfc802b105ce05;p=pandora-kernel.git

target/transport: Always initialize bidi fields in se_cmd

Fields t_bidi_data_sg and t_bidi_data_nents are set only in the presence
of BIDI commands. This means that the underlying code (for example TCMU)
cannot inspect them when the SCSI command is not a BIDI one.

Ensure the code always initializes these fields with the given values,
even when the SCSI command is not a BIDI one. Set t_bidi_data_sg to
sgl_bidi (which should be NULL for non-BIDI commands) and
t_bidi_data_nents to sgl_bidi_count (which should be 0 for non-BIDI
commands). This allows the underlying code to use these fields
unconditionally.

Signed-off-by: Ilias Tsitsimpis <iliastsi@arrikto.com>
Signed-off-by: Vangelis Koukis <vkoukis@arrikto.com>
Reviewed-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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