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hpsa: Convert SCSI LLD ->queuecommand() for host_lock less operation

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There isn't anything in hpsa that requires the host lock to be held
during queuecommand.

Signed-off-by: Don Brace <don.brace@pmcs.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Reviewed-by: Stephen M. Cameron <stephenmcameron@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Nicholas Bellinger 2014-11-14 17:27:19 -06:00 committed by Christoph Hellwig
parent 2f371c92c4
commit 763aadbf50
1 changed files with 7 additions and 9 deletions
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16
drivers/scsi/hpsa.c
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@ -3881,8 +3881,11 @@ static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h,
dev->scsi3addr);
}
static int hpsa_scsi_queue_command_lck(struct scsi_cmnd *cmd,
void (*done)(struct scsi_cmnd *))
/*
* Running in struct Scsi_Host->host_lock less mode using LLD internal
* struct ctlr_info *h->lock w/ spin_lock_irqsave() protection.
*/
static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
{
struct ctlr_info *h;
struct hpsa_scsi_dev_t *dev;
@ -3895,14 +3898,14 @@ static int hpsa_scsi_queue_command_lck(struct scsi_cmnd *cmd,
dev = cmd->device->hostdata;
if (!dev) {
cmd->result = DID_NO_CONNECT << 16;
done(cmd);
cmd->scsi_done(cmd);
return 0;
}
memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr));
if (unlikely(lockup_detected(h))) {
cmd->result = DID_ERROR << 16;
done(cmd);
cmd->scsi_done(cmd);
return 0;
}
c = cmd_alloc(h);
@ -3912,9 +3915,6 @@ static int hpsa_scsi_queue_command_lck(struct scsi_cmnd *cmd,
}
/* Fill in the command list header */
cmd->scsi_done = done; /* save this for use by completion code */
/* save c in case we have to abort it */
cmd->host_scribble = (unsigned char *) c;
@ -4005,8 +4005,6 @@ static int hpsa_scsi_queue_command_lck(struct scsi_cmnd *cmd,
return 0;
}
static DEF_SCSI_QCMD(hpsa_scsi_queue_command)
static int do_not_scan_if_controller_locked_up(struct ctlr_info *h)
{
unsigned long flags;