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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
Download Patch File Download Diff File Expand all files Collapse all files
drivers/scsi/isci/task.c
+3 -26
View File
@@ -1345,29 +1345,6 @@ static void isci_smp_task_done(struct sas_task *task)
complete(&task->completion);
}
static struct sas_task *isci_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 isci_free_task(struct isci_host *ihost, struct sas_task *task)
{
if (task) {
BUG_ON(!list_empty(&task->list));
kfree(task);
}
}
static int isci_smp_execute_task(struct isci_host *ihost,
struct domain_device *dev, void *req,
int req_size, void *resp, int resp_size)
@@ -1376,7 +1353,7 @@ static int isci_smp_execute_task(struct isci_host *ihost,
struct sas_task *task = NULL;
for (retry = 0; retry < 3; retry++) {
task = isci_alloc_task();
task = sas_alloc_task(GFP_KERNEL);
if (!task)
return -ENOMEM;
@@ -1439,13 +1416,13 @@ static int isci_smp_execute_task(struct isci_host *ihost,
SAS_ADDR(dev->sas_addr),
task->task_status.resp,
task->task_status.stat);
isci_free_task(ihost, task);
sas_free_task(task);
task = NULL;
}
}
ex_err:
BUG_ON(retry == 3 && task != NULL);
isci_free_task(ihost, task);
sas_free_task(task);
return res;
}