1 files changed, 37 insertions, 36 deletions

diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
index 6f33d821e545..32e60f0c3b14 100644
--- a/drivers/scsi/pm8001/pm8001_sas.c
+++ b/drivers/scsi/pm8001/pm8001_sas.c
@@ -98,14 +98,16 @@ void pm8001_tag_init(struct pm8001_hba_info *pm8001_ha)
 		pm8001_tag_free(pm8001_ha, i);
 }
 
- /**
-  * pm8001_mem_alloc - allocate memory for pm8001.
-  * @pdev: pci device.
-  * @virt_addr: the allocated virtual address
-  * @pphys_addr_hi: the physical address high byte address.
-  * @pphys_addr_lo: the physical address low byte address.
-  * @mem_size: memory size.
-  */
+/**
+ * pm8001_mem_alloc - allocate memory for pm8001.
+ * @pdev: pci device.
+ * @virt_addr: the allocated virtual address
+ * @pphys_addr: DMA address for this device
+ * @pphys_addr_hi: the physical address high byte address.
+ * @pphys_addr_lo: the physical address low byte address.
+ * @mem_size: memory size.
+ * @align: requested byte alignment
+ */
 int pm8001_mem_alloc(struct pci_dev *pdev, void **virt_addr,
 	dma_addr_t *pphys_addr, u32 *pphys_addr_hi,
 	u32 *pphys_addr_lo, u32 mem_size, u32 align)
@@ -339,7 +341,7 @@ static int pm8001_task_prep_ssp_tm(struct pm8001_hba_info *pm8001_ha,
 }
 
 /**
-  * pm8001_task_prep_ssp - the dispatcher function,prepare ssp data for ssp task
+  * pm8001_task_prep_ssp - the dispatcher function, prepare ssp data for ssp task
   * @pm8001_ha: our hba card information
   * @ccb: the ccb which attached to ssp task
   */
@@ -554,10 +556,10 @@ void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha,
 	pm8001_tag_free(pm8001_ha, ccb_idx);
 }
 
- /**
-  * pm8001_alloc_dev - find a empty pm8001_device
-  * @pm8001_ha: our hba card information
-  */
+/**
+ * pm8001_alloc_dev - find a empty pm8001_device
+ * @pm8001_ha: our hba card information
+ */
 static struct pm8001_device *pm8001_alloc_dev(struct pm8001_hba_info *pm8001_ha)
 {
 	u32 dev;
@@ -682,8 +684,7 @@ int pm8001_dev_found(struct domain_device *dev)
 
 void pm8001_task_done(struct sas_task *task)
 {
-	if (!del_timer(&task->slow_task->timer))
-		return;
+	del_timer(&task->slow_task->timer);
 	complete(&task->slow_task->completion);
 }
 
@@ -691,9 +692,14 @@ static void pm8001_tmf_timedout(struct timer_list *t)
 {
 	struct sas_task_slow *slow = from_timer(slow, t, timer);
 	struct sas_task *task = slow->task;
+	unsigned long flags;
 
-	task->task_state_flags |= SAS_TASK_STATE_ABORTED;
-	complete(&task->slow_task->completion);
+	spin_lock_irqsave(&task->task_state_lock, flags);
+	if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
+		task->task_state_flags |= SAS_TASK_STATE_ABORTED;
+		complete(&task->slow_task->completion);
+	}
+	spin_unlock_irqrestore(&task->task_state_lock, flags);
 }
 
 #define PM8001_TASK_TIMEOUT 20
@@ -705,7 +711,7 @@ static void pm8001_tmf_timedout(struct timer_list *t)
   * @parameter: ssp task parameter.
   *
   * when errors or exception happened, we may want to do something, for example
-  * abort the issued task which result in this execption, it is done by calling
+  * abort the issued task which result in this exception, it is done by calling
   * this function, note it is also with the task execute interface.
   */
 static int pm8001_exec_internal_tmf_task(struct domain_device *dev,
@@ -746,13 +752,10 @@ static int pm8001_exec_internal_tmf_task(struct domain_device *dev,
 		}
 		res = -TMF_RESP_FUNC_FAILED;
 		/* Even TMF timed out, return direct. */
-		if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
-			if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
-				pm8001_dbg(pm8001_ha, FAIL,
-					   "TMF task[%x]timeout.\n",
-					   tmf->tmf);
-				goto ex_err;
-			}
+		if (task->task_state_flags & SAS_TASK_STATE_ABORTED) {
+			pm8001_dbg(pm8001_ha, FAIL, "TMF task[%x]timeout.\n",
+				   tmf->tmf);
+			goto ex_err;
 		}
 
 		if (task->task_status.resp == SAS_TASK_COMPLETE &&
@@ -832,12 +835,9 @@ pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha,
 		wait_for_completion(&task->slow_task->completion);
 		res = TMF_RESP_FUNC_FAILED;
 		/* Even TMF timed out, return direct. */
-		if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
-			if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
-				pm8001_dbg(pm8001_ha, FAIL,
-					   "TMF task timeout.\n");
-				goto ex_err;
-			}
+		if (task->task_state_flags & SAS_TASK_STATE_ABORTED) {
+			pm8001_dbg(pm8001_ha, FAIL, "TMF task timeout.\n");
+			goto ex_err;
 		}
 
 		if (task->task_status.resp == SAS_TASK_COMPLETE &&
@@ -984,11 +984,12 @@ void pm8001_open_reject_retry(
 }
 
 /**
- * pm8001_I_T_nexus_reset()
-  * Standard mandates link reset for ATA  (type 0) and hard reset for
-  * SSP (type 1) , only for RECOVERY
-  * @dev: the device structure for the device to reset.
-  */
+ * pm8001_I_T_nexus_reset() - reset the initiator/target connection
+ * @dev: the device structure for the device to reset.
+ *
+ * Standard mandates link reset for ATA (type 0) and hard reset for
+ * SSP (type 1), only for RECOVERY
+ */
 int pm8001_I_T_nexus_reset(struct domain_device *dev)
 {
 	int rc = TMF_RESP_FUNC_FAILED;