target: Fix zero-length INQUIRY additional sense code regression
This patch fixes a minor regression introduced in v3.8-rc1 code where a zero-length INQUIRY was no longer returning the correct INVALID FIELD IN CDB additional sense code. This regression was introduced with the following commit: commit de103c93 Author: Christoph Hellwig <hch@lst.de> Date: Tue Nov 6 12:24:09 2012 -0800 target: pass sense_reason as a return value and this patch has been tested with the following zero-length CDB: sg_raw /dev/sdd 12 00 83 00 00 00 SCSI Status: Check Condition Sense Information: Fixed format, current; Sense key: Illegal Request Additional sense: Invalid field in cdb Cc: Christoph Hellwig <hch@lst.de> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Roland Dreier <roland@purestorage.com> Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>
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