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scsi: core: Remove cmd_list functionality

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Remove cmd_list functionality; no users left.  With that the
scsi_put_command() becomes empty, so remove that one, too.

Link: https://lore.kernel.org/r/20200228075318.91255-14-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart van Assche <bvanassche@acm.org>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Hannes Reinecke 2020-02-28 08:53:18 +01:00 committed by Martin K. Petersen
parent 35d2ce0b65
commit c5a9707672
8 changed files with 0 additions and 53 deletions
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14
drivers/scsi/scsi.c
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@ -94,20 +94,6 @@ EXPORT_SYMBOL(scsi_logging_level);
ASYNC_DOMAIN_EXCLUSIVE(scsi_sd_pm_domain);
EXPORT_SYMBOL(scsi_sd_pm_domain);
/**
* scsi_put_command - Free a scsi command block
* @cmd: command block to free
*
* Returns: Nothing.
*
* Notes: The command must not belong to any lists.
*/
void scsi_put_command(struct scsi_cmnd *cmd)
{
scsi_del_cmd_from_list(cmd);
BUG_ON(delayed_work_pending(&cmd->abort_work));
}
#ifdef CONFIG_SCSI_LOGGING
void scsi_log_send(struct scsi_cmnd *cmd)
{

1
drivers/scsi/scsi_error.c
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@ -2412,7 +2412,6 @@ scsi_ioctl_reset(struct scsi_device *dev, int __user *arg)
wake_up(&shost->host_wait);
scsi_run_host_queues(shost);
scsi_put_command(scmd);
kfree(rq);
out_put_autopm_host:

31
drivers/scsi/scsi_lib.c
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@ -562,7 +562,6 @@ static void scsi_mq_uninit_cmd(struct scsi_cmnd *cmd)
{
scsi_mq_free_sgtables(cmd);
scsi_uninit_cmd(cmd);
scsi_del_cmd_from_list(cmd);
}
/* Returns false when no more bytes to process, true if there are more */
@ -1098,35 +1097,6 @@ static void scsi_cleanup_rq(struct request *rq)
}
}
/* Add a command to the list used by the aacraid and dpt_i2o drivers */
void scsi_add_cmd_to_list(struct scsi_cmnd *cmd)
{
struct scsi_device *sdev = cmd->device;
struct Scsi_Host *shost = sdev->host;
unsigned long flags;
if (shost->use_cmd_list) {
spin_lock_irqsave(&sdev->list_lock, flags);
list_add_tail(&cmd->list, &sdev->cmd_list);
spin_unlock_irqrestore(&sdev->list_lock, flags);
}
}
/* Remove a command from the list used by the aacraid and dpt_i2o drivers */
void scsi_del_cmd_from_list(struct scsi_cmnd *cmd)
{
struct scsi_device *sdev = cmd->device;
struct Scsi_Host *shost = sdev->host;
unsigned long flags;
if (shost->use_cmd_list) {
spin_lock_irqsave(&sdev->list_lock, flags);
BUG_ON(list_empty(&cmd->list));
list_del_init(&cmd->list);
spin_unlock_irqrestore(&sdev->list_lock, flags);
}
}
/* Called after a request has been started. */
void scsi_init_command(struct scsi_device *dev, struct scsi_cmnd *cmd)
{
@ -1160,7 +1130,6 @@ void scsi_init_command(struct scsi_device *dev, struct scsi_cmnd *cmd)
if (in_flight)
__set_bit(SCMD_STATE_INFLIGHT, &cmd->state);
scsi_add_cmd_to_list(cmd);
}
static blk_status_t scsi_setup_scsi_cmnd(struct scsi_device *sdev,

2
drivers/scsi/scsi_priv.h
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@ -83,8 +83,6 @@ int scsi_eh_get_sense(struct list_head *work_q,
int scsi_noretry_cmd(struct scsi_cmnd *scmd);
/* scsi_lib.c */
extern void scsi_add_cmd_to_list(struct scsi_cmnd *cmd);
extern void scsi_del_cmd_from_list(struct scsi_cmnd *cmd);
extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
extern void scsi_device_unbusy(struct scsi_device *sdev, struct scsi_cmnd *cmd);
extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason);

1
drivers/scsi/scsi_scan.c
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@ -236,7 +236,6 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget,
sdev->sdev_state = SDEV_CREATED;
INIT_LIST_HEAD(&sdev->siblings);
INIT_LIST_HEAD(&sdev->same_target_siblings);
INIT_LIST_HEAD(&sdev->cmd_list);
INIT_LIST_HEAD(&sdev->starved_entry);
INIT_LIST_HEAD(&sdev->event_list);
spin_lock_init(&sdev->list_lock);

1
include/scsi/scsi_cmnd.h
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@ -159,7 +159,6 @@ static inline struct scsi_driver *scsi_cmd_to_driver(struct scsi_cmnd *cmd)
return *(struct scsi_driver **)cmd->request->rq_disk->private_data;
}
extern void scsi_put_command(struct scsi_cmnd *);
extern void scsi_finish_command(struct scsi_cmnd *cmd);
extern void *scsi_kmap_atomic_sg(struct scatterlist *sg, int sg_count,

1
include/scsi/scsi_device.h
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@ -110,7 +110,6 @@ struct scsi_device {
atomic_t device_blocked; /* Device returned QUEUE_FULL. */
spinlock_t list_lock;
struct list_head cmd_list; /* queue of in use SCSI Command structures */
struct list_head starved_entry;
unsigned short queue_depth; /* How deep of a queue we want */
unsigned short max_queue_depth; /* max queue depth */

2
include/scsi/scsi_host.h
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@ -624,8 +624,6 @@ struct Scsi_Host {
/* The controller does not support WRITE SAME */
unsigned no_write_same:1;
unsigned use_cmd_list:1;
/* Host responded with short (<36 bytes) INQUIRY result */
unsigned short_inquiry:1;