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[SCSI] libsas: export sas_alloc_task()

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Now that isci has added a 3rd open coded user of this functionality just
share the libsas version.

Acked-by: Jack Wang <jack_wang@usish.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Dan Williams
2011-07-29 17:26:39 -07:00
committed by James Bottomley
parent 7ca3c803e8
commit 4fcf812ca3
5 changed files with 41 additions and 111 deletions
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38
drivers/scsi/pm8001/pm8001_sas.c
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@@ -669,30 +669,6 @@ int pm8001_dev_found(struct domain_device *dev)
return pm8001_dev_found_notify(dev);
}
/**
* pm8001_alloc_task - allocate a task structure for TMF
*/
static struct sas_task *pm8001_alloc_task(void)
{
struct sas_task *task = kzalloc(sizeof(*task), GFP_KERNEL);
if (task) {
INIT_LIST_HEAD(&task->list);
spin_lock_init(&task->task_state_lock);
task->task_state_flags = SAS_TASK_STATE_PENDING;
init_timer(&task->timer);
init_completion(&task->completion);
}
return task;
}
static void pm8001_free_task(struct sas_task *task)
{
if (task) {
BUG_ON(!list_empty(&task->list));
kfree(task);
}
}
static void pm8001_task_done(struct sas_task *task)
{
if (!del_timer(&task->timer))
@@ -728,7 +704,7 @@ static int pm8001_exec_internal_tmf_task(struct domain_device *dev,
struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
for (retry = 0; retry < 3; retry++) {
task = pm8001_alloc_task();
task = sas_alloc_task(GFP_KERNEL);
if (!task)
return -ENOMEM;
@@ -789,14 +765,13 @@ static int pm8001_exec_internal_tmf_task(struct domain_device *dev,
SAS_ADDR(dev->sas_addr),
task->task_status.resp,
task->task_status.stat));
pm8001_free_task(task);
sas_free_task(task);
task = NULL;
}
}
ex_err:
BUG_ON(retry == 3 && task != NULL);
if (task != NULL)
pm8001_free_task(task);
sas_free_task(task);
return res;
}
@@ -811,7 +786,7 @@ pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha,
struct sas_task *task = NULL;
for (retry = 0; retry < 3; retry++) {
task = pm8001_alloc_task();
task = sas_alloc_task(GFP_KERNEL);
if (!task)
return -ENOMEM;
@@ -864,14 +839,13 @@ pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha,
SAS_ADDR(dev->sas_addr),
task->task_status.resp,
task->task_status.stat));
pm8001_free_task(task);
sas_free_task(task);
task = NULL;
}
}
ex_err:
BUG_ON(retry == 3 && task != NULL);
if (task != NULL)
pm8001_free_task(task);
sas_free_task(task);
return res;
}