[SCSI] libsas: export sas_alloc_task()

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>

1 files changed, 3 insertions, 26 deletions

diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c
index d6bcdd013dc9..e2d9418683ce 100644
--- a/drivers/scsi/isci/task.c
+++ b/drivers/scsi/isci/task.c
@@ -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;
 }