Christoph Hellwig a0c0b0e945 libata: don't call ata_scsi_rbuf_fill for command without a response buffer
No need to copy a zeroed buffer to the caller if the command is defined
to not have a response in the SCSI spec.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
2017-01-10 10:55:40 -05:00
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