isci: Removing unused variables compiler warnings

Newer gcc's are better at identifying "set, but not used" variables.
Signed-off-by: NDave Jiang <dave.jiang@intel.com>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

drivers/scsi/isci/request.c

@@ -211,11 +211,9 @@ static void scu_ssp_reqeust_construct_task_context(
 	struct scu_task_context *task_context)
 {
 	dma_addr_t dma_addr;
-	struct scic_sds_controller *controller;
 	struct scic_sds_remote_device *target_device;
 	struct scic_sds_port *target_port;
 
-	controller = scic_sds_request_get_controller(sds_request);
 	target_device = scic_sds_request_get_device(sds_request);
 	target_port = scic_sds_request_get_port(sds_request);
 
@@ -384,11 +382,9 @@ static void scu_sata_reqeust_construct_task_context(
 	struct scu_task_context *task_context)
 {
 	dma_addr_t dma_addr;
-	struct scic_sds_controller *controller;
 	struct scic_sds_remote_device *target_device;
 	struct scic_sds_port *target_port;
 
-	controller = scic_sds_request_get_controller(sci_req);
 	target_device = scic_sds_request_get_device(sci_req);
 	target_port = scic_sds_request_get_port(sci_req);
 
@@ -677,12 +673,10 @@ enum sci_status scic_task_request_construct_ssp(
 static enum sci_status scic_io_request_construct_basic_sata(struct scic_sds_request *sci_req)
 {
 	enum sci_status status;
-	struct scic_sds_stp_request *stp_req;
 	bool copy = false;
 	struct isci_request *isci_request = sci_req_to_ireq(sci_req);
 	struct sas_task *task = isci_request_access_task(isci_request);
 
-	stp_req = &sci_req->stp.req;
 	sci_req->protocol = SCIC_STP_PROTOCOL;
 
 	copy = (task->data_dir == DMA_NONE) ? false : true;
@@ -3190,7 +3184,6 @@ scu_smp_request_construct_task_context(struct scic_sds_request *sci_req,
 				       ssize_t req_len)
 {
 	dma_addr_t dma_addr;
-	struct scic_sds_controller *scic;
 	struct scic_sds_remote_device *sci_dev;
 	struct scic_sds_port *sci_port;
 	struct scu_task_context *task_context;
@@ -3202,7 +3195,6 @@ scu_smp_request_construct_task_context(struct scic_sds_request *sci_req,
 
 	task_context = scic_sds_request_get_task_context(sci_req);
 
-	scic = scic_sds_request_get_controller(sci_req);
 	sci_dev = scic_sds_request_get_device(sci_req);
 	sci_port = scic_sds_request_get_port(sci_req);
 

drivers/scsi/isci/task.c

@@ -1358,7 +1358,6 @@ isci_task_request_complete(struct isci_host *ihost,
 			   enum sci_task_status completion_status)
 {
 	struct isci_remote_device *idev = ireq->isci_device;
-	enum isci_request_status old_state;
 	struct isci_tmf *tmf = isci_request_access_tmf(ireq);
 	struct completion *tmf_complete;
 	struct scic_sds_request *sci_req = &ireq->sci;
@@ -1367,7 +1366,7 @@ isci_task_request_complete(struct isci_host *ihost,
 		"%s: request = %p, status=%d\n",
 		__func__, ireq, completion_status);
 
-	old_state = isci_request_change_state(ireq, completed);
+	isci_request_change_state(ireq, completed);
 
 	tmf->status = completion_status;
 	ireq->complete_in_target = true;