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nvme/scsi: Remove START STOP emulation 

Now that the broken power state control is gone, it appears to serve
no purpose.  Just delete it.  NVME devices don't have a concept of
started vs stopped anyway.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Andy Lutomirski 2016-12-06 10:14:35 -08:00 committed by Christoph Hellwig
parent ff13b39ecf
commit 2c473a9d02
1 changed files with 0 additions and 27 deletions
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27
drivers/nvme/host/scsi.c
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@ -2160,30 +2160,6 @@ static int nvme_trans_synchronize_cache(struct nvme_ns *ns,
return nvme_trans_status_code(hdr, nvme_sc);
}
static int nvme_trans_start_stop(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 *cmd)
{
u8 immed, no_flush;
immed = cmd[1] & 0x01;
no_flush = cmd[4] & 0x04;
if (immed != 0) {
return nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
} else {
if (no_flush == 0) {
/* Issue NVME FLUSH command prior to START STOP UNIT */
int res = nvme_trans_synchronize_cache(ns, hdr);
if (res)
return res;
}
return 0;
}
}
static int nvme_trans_format_unit(struct nvme_ns *ns, struct sg_io_hdr *hdr,
u8 *cmd)
{
@ -2439,9 +2415,6 @@ static int nvme_scsi_translate(struct nvme_ns *ns, struct sg_io_hdr *hdr)
case SECURITY_PROTOCOL_OUT:
retcode = nvme_trans_security_protocol(ns, hdr, cmd);
break;
case START_STOP:
retcode = nvme_trans_start_stop(ns, hdr, cmd);
break;
case SYNCHRONIZE_CACHE:
retcode = nvme_trans_synchronize_cache(ns, hdr);
break;